5
20
1651
-
https://dev.geosciencecollections.milne-library.org/files/original/975e3474b7fcc69629b48494a3942c66.JPG
e256f75e8bc2574d71742a52b907bfb1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Sillimanite-garnet-biotite-quartz-plagioclase gneiss
https://dev.geosciencecollections.milne-library.org/files/original/92462fb0b10d95d4224f32d3ebf511ce.jpg
f59cec60a3f59e0a51bb61009e91851b
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Sillimanite-garnet-biotite-quartz-plagioclase gneiss-thin section cross polarized light
https://dev.geosciencecollections.milne-library.org/files/original/8ff277adfa9d3e81f8c81ee1ff9bbf93.jpg
0bdf12838fbc16b6aa91bc4db62a903c
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Sillimanite-garnet-biotite-quartz-plagioclase gneiss-thin section plane polarized light
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(ADK) Anorthosite-Charnockite and Metamorphic Suite --
Adirondack Mountains, New York
Description
An account of the resource
The Adirondack Mountains of northern New York State are underlain by approximately 20,000 square miles of complexly deformed, high grade metamorphic rocks which are believed to represent a southern outlier of the much larger Grenville Province.The Adirondacks can be divided into the "Lowlands" and the "Highlands" . The Lowlands comprise the northwestern quarter of the belt and are characterized by amphibolite facies metamorphism. The Highlands appear to consist entirely of granulite facies rocks. All rocks in this suite have been collected from the Highlands and predominantly from the southern quarter of the Adirondacks.
This suite of rocks is designed to be representative of the Highlands in general. Therefore it includes both metasedimentary and metaigneous rocks. The latter are very common throughout the Adirondacks and contain the often-discussed anorthosite-charnockite suite of rocks. Almost all rocks in the Adirondack Highlands are strongly foliated. This is the result of intense polyphase deformation that has affected this area.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start here: <br /></strong>McLelland, J., and Selleck, B.W.,2011, Megacrystic Gore Mountain-type garnets in the Adirondack Highlands; age, origin, and tectonic implications:Geosphere, v.7, no. 5, p.1194-1208, doi: <a href="http://dx.doi.org/10.1130/GES00683.1" target="_blank">10.1130/GES00683.1</a>.<br /><ul><li>This article describes the formation of the megacrystic garnet amphibolites in the Gore Mountain section of the Adirondack Mountains. The authors conclude that three main factors influenced the garnet development: collapse of the Ottawan orogeny, intrusion of Lyon Mountain Granite, and fluid-related alteration at high temperature.</li>
</ul><p><strong>Additional resources:<br /></strong>McLelland, J.M., Bickford, M.E., Hill, B.M., Clechenko, C.C., Valley, J.W., and Hamilton, M.A., 2004, Direct dating of Adirondack Massif anorthosite by U-Pb SHRIMP analysis of igneous zircon; implications for AMCG complexes: Geological Society of America Bulletin, v.116, no. 11-12, p.1299-1317, doi: <a href="http://dx.doi.org/10.1130/B25482.1" target="_blank">10.1130/B25482.1</a>.</p>
<ul><li>This article describes techniques used to more accurately date the Adirondack Massif anorthosite.The authors concluded that the massifs <span>constitute a single, composite anorthosite-mangerite-charnockite-granite (AMCG) suite intruded at ca. 1155 Ma. Although the rock suite is considered to be coeval, the authors conclude the rocks are not comagmatic.</span></li>
</ul><p>McLelland, J., Bickford, M.E., Spear, F., and Storm, L., 2002, Geology and geochronolgy of the eastern Adirondacks in <span>New England Intercollegiate Geological Conference, 94th, New York State Geological Association 74th: guidebook for field trips in New York and Vermont : Lake George, New York<br /></span></p>
<ul><li>This field trip guide provides for nine stops in the eastern Adirondacks. It also include some thin sections images and zircon images from sample rocks of the field trip stops.</li>
</ul><p>McLelland, J., Daly, J.S., and McLelland, J.M., 1996, The Grenville orogenic cycle (ca. 1350-1000 Ma); an Adirondack perspective: Tectonophysics, v.265, issue 1-2, p.1-28, doi: <a href="http://dx.doi.org/10.1016/S0040-1951(96)00144-8" target="_blank">10.1016/S0040-1951(96)00144-8</a>.</p>
<ul><li>This article provides a detailed geochronological account of the Grenville orogeny (ca. 1350-1000 Ma) with emphasis on the impact it had on the formation of the Adirondack Mountains.</li>
</ul><p>McLelland, J., Lewis, A., and Moore, L., 1994, Composition and petrogenesis of oxide-, apatite-rich gabbronorites associated with Proterozoic anorthosite massifs: examples from the Adirondack Mountains, New York: Contributions to Mineralogy and Petrology, v.116, p.225-238, doi: <a href="http://dx.doi.org/10.1007/BF00310702" target="_blank">10.1007/BF00310702</a>.</p>
<ul><li>This article investigates the occurence of oxide-, apatite-rich gabbronorites with anorthosite massifs of the Adirondacks. The authors describe a multilple-step process of plagioclase crystal fractionation that ultimately leads to high concentrations of P, Fe, and Ti.</li>
</ul><p>New York State Geological Survey<br /><a href="http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html">http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html<br /></a></p>
<ul><li>The NYS Geological Survey is a division of the New York State Museum system. This web page provides some details about the Adirondack Highlands and pictures of various minerals found in this region.</li>
</ul><p>Regan, S.P., Chiarenzelli, J.R., McLelland, J.M., and Cousens, B. L., 2011, Evidence for an enriched asthenospheric source for coronitic metagabbros in the Adirondack Highlands: Geosphere, v.7, issue 3, p.<span> 694-709, doi: <a href="http://dx.doi.org/10.1130/GES00629.1" target="_blank">10.1130/GES00629.1</a>.<br /></span></p>
<ul><li>This article describes the formation of coronitc metagabbros through tectonic processes involving the asthenosphere. Through geochemical and isotopic analyses, the authors provide a timeline of tectonic and petrologic events that supports an asthenospheric source for coronitic metagabbros.</li>
</ul>
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
Temporal Coverage
Temporal characteristics of the resource.
The Adirondack Mountains were formed approximately 1.1- 1.3 billion years ago during the Grenville Orogeny (Precambrian eon, Proterozic era).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Spatial Coverage
Spatial characteristics of the resource.
This rock suite was collected from the Adirondack Mountains located in the northeastern part of New York State.
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Peck Lake Formation
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Identifier
An unambiguous reference to the resource within a given context
AD-4
Title
A name given to the resource
Sillimanite-garnet-biotite-quartz-plagioclase gneiss
Spatial Coverage
Spatial characteristics of the resource.
Adirondack Highlands--collected form a road cut on Route 29A approximately 5 miles north of Canada Lake Store, directly across from the Canada Lake Rod and Gun Club entrance.
Temporal Coverage
Temporal characteristics of the resource.
Precambrian
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<div style="text-align:left;"><a href="http://geosciencecollections.milne-library.org/collections/show/7">Anorthosite-Charnockite and Metamorphic Suite-Adirondack Mountains, New York</a></div>
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Description
An account of the resource
The predominant lithology of the Peck Lake Formation is a sillimanite-garnet-biotite-quartz-oligoclase gneiss with pods and lenses consisting of two feldspars and quartz (anatectic?). The lithology is widespread throughout the Adirondacks and may represent a metapelite or metagraywacke. European geologists have referred to similiar lithologies as "kinzigites" (deWaard, 1962).
Thin section shows sillimanite, quartz, biotite and plagioclase.
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
-
https://dev.geosciencecollections.milne-library.org/files/original/b8e4138e6db0ca0f338f42bb2f91f94c.JPG
8b7f40dc0f1f976ed85da5a8729da31f
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Calcsilicate rock
https://dev.geosciencecollections.milne-library.org/files/original/8898d31bd9ef5490042db875c1138ec9.jpg
02f38a193466a7ae99f3b02a27b5c01c
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Calcsilicate rock-thin section cross polarized light
https://dev.geosciencecollections.milne-library.org/files/original/defb40c994d37c081c446a5cd9b7bbcb.jpg
1bbe8ef3d45143f9a5eed15104371787
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Calcsilicate rock-thin section plane polarized light
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(ADK) Anorthosite-Charnockite and Metamorphic Suite --
Adirondack Mountains, New York
Description
An account of the resource
The Adirondack Mountains of northern New York State are underlain by approximately 20,000 square miles of complexly deformed, high grade metamorphic rocks which are believed to represent a southern outlier of the much larger Grenville Province.The Adirondacks can be divided into the "Lowlands" and the "Highlands" . The Lowlands comprise the northwestern quarter of the belt and are characterized by amphibolite facies metamorphism. The Highlands appear to consist entirely of granulite facies rocks. All rocks in this suite have been collected from the Highlands and predominantly from the southern quarter of the Adirondacks.
This suite of rocks is designed to be representative of the Highlands in general. Therefore it includes both metasedimentary and metaigneous rocks. The latter are very common throughout the Adirondacks and contain the often-discussed anorthosite-charnockite suite of rocks. Almost all rocks in the Adirondack Highlands are strongly foliated. This is the result of intense polyphase deformation that has affected this area.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start here: <br /></strong>McLelland, J., and Selleck, B.W.,2011, Megacrystic Gore Mountain-type garnets in the Adirondack Highlands; age, origin, and tectonic implications:Geosphere, v.7, no. 5, p.1194-1208, doi: <a href="http://dx.doi.org/10.1130/GES00683.1" target="_blank">10.1130/GES00683.1</a>.<br /><ul><li>This article describes the formation of the megacrystic garnet amphibolites in the Gore Mountain section of the Adirondack Mountains. The authors conclude that three main factors influenced the garnet development: collapse of the Ottawan orogeny, intrusion of Lyon Mountain Granite, and fluid-related alteration at high temperature.</li>
</ul><p><strong>Additional resources:<br /></strong>McLelland, J.M., Bickford, M.E., Hill, B.M., Clechenko, C.C., Valley, J.W., and Hamilton, M.A., 2004, Direct dating of Adirondack Massif anorthosite by U-Pb SHRIMP analysis of igneous zircon; implications for AMCG complexes: Geological Society of America Bulletin, v.116, no. 11-12, p.1299-1317, doi: <a href="http://dx.doi.org/10.1130/B25482.1" target="_blank">10.1130/B25482.1</a>.</p>
<ul><li>This article describes techniques used to more accurately date the Adirondack Massif anorthosite.The authors concluded that the massifs <span>constitute a single, composite anorthosite-mangerite-charnockite-granite (AMCG) suite intruded at ca. 1155 Ma. Although the rock suite is considered to be coeval, the authors conclude the rocks are not comagmatic.</span></li>
</ul><p>McLelland, J., Bickford, M.E., Spear, F., and Storm, L., 2002, Geology and geochronolgy of the eastern Adirondacks in <span>New England Intercollegiate Geological Conference, 94th, New York State Geological Association 74th: guidebook for field trips in New York and Vermont : Lake George, New York<br /></span></p>
<ul><li>This field trip guide provides for nine stops in the eastern Adirondacks. It also include some thin sections images and zircon images from sample rocks of the field trip stops.</li>
</ul><p>McLelland, J., Daly, J.S., and McLelland, J.M., 1996, The Grenville orogenic cycle (ca. 1350-1000 Ma); an Adirondack perspective: Tectonophysics, v.265, issue 1-2, p.1-28, doi: <a href="http://dx.doi.org/10.1016/S0040-1951(96)00144-8" target="_blank">10.1016/S0040-1951(96)00144-8</a>.</p>
<ul><li>This article provides a detailed geochronological account of the Grenville orogeny (ca. 1350-1000 Ma) with emphasis on the impact it had on the formation of the Adirondack Mountains.</li>
</ul><p>McLelland, J., Lewis, A., and Moore, L., 1994, Composition and petrogenesis of oxide-, apatite-rich gabbronorites associated with Proterozoic anorthosite massifs: examples from the Adirondack Mountains, New York: Contributions to Mineralogy and Petrology, v.116, p.225-238, doi: <a href="http://dx.doi.org/10.1007/BF00310702" target="_blank">10.1007/BF00310702</a>.</p>
<ul><li>This article investigates the occurence of oxide-, apatite-rich gabbronorites with anorthosite massifs of the Adirondacks. The authors describe a multilple-step process of plagioclase crystal fractionation that ultimately leads to high concentrations of P, Fe, and Ti.</li>
</ul><p>New York State Geological Survey<br /><a href="http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html">http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html<br /></a></p>
<ul><li>The NYS Geological Survey is a division of the New York State Museum system. This web page provides some details about the Adirondack Highlands and pictures of various minerals found in this region.</li>
</ul><p>Regan, S.P., Chiarenzelli, J.R., McLelland, J.M., and Cousens, B. L., 2011, Evidence for an enriched asthenospheric source for coronitic metagabbros in the Adirondack Highlands: Geosphere, v.7, issue 3, p.<span> 694-709, doi: <a href="http://dx.doi.org/10.1130/GES00629.1" target="_blank">10.1130/GES00629.1</a>.<br /></span></p>
<ul><li>This article describes the formation of coronitc metagabbros through tectonic processes involving the asthenosphere. Through geochemical and isotopic analyses, the authors provide a timeline of tectonic and petrologic events that supports an asthenospheric source for coronitic metagabbros.</li>
</ul>
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
Temporal Coverage
Temporal characteristics of the resource.
The Adirondack Mountains were formed approximately 1.1- 1.3 billion years ago during the Grenville Orogeny (Precambrian eon, Proterozic era).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Spatial Coverage
Spatial characteristics of the resource.
This rock suite was collected from the Adirondack Mountains located in the northeastern part of New York State.
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Blue Mountain Lake Formation
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Calcsilicate rock
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/7">Anorthosite-Charnockite and Metmorphic Suite-Adirondack Mountains, New York</a>
Identifier
An unambiguous reference to the resource within a given context
AD-8
Spatial Coverage
Spatial characteristics of the resource.
Adirondack Highlands-collected on NY Route 30 from a large road cut 3.1 miles east of Speculator, NY.
Temporal Coverage
Temporal characteristics of the resource.
Precambrian
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Description
An account of the resource
Minerals found in the calcsilicate facies contain quartz, diopside, enstatitic pyroxene, tremolite, calcite, and phlogopite. However, only a few thin sections have been found to contain all phases. In some specimens, the pyroxene is close to 100% enstatite. The assemblage may be due to the reaction tremolite=diopside+ enstatite + quartz +fluid. This reaction discussed by Boyd, "Hydrothermal Investigations of Amphiboles," in Abelson, p.377-396.
Thin section shows calcite, diopside and phlogopite.
-
https://dev.geosciencecollections.milne-library.org/files/original/a30dcc469cdcc020252c7aa2b9df65c9.JPG
3c1dc09223fd7a101f240889b111c4a2
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Sillimanite-garnet-quartz-feldspar gneiss
https://dev.geosciencecollections.milne-library.org/files/original/5283f807017d0289165f0865f8d94c2e.jpg
071248a12c27844c91f3e4663c918f69
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Sillimanite-garnet-quartz-feldspar gneiss-thin section cross polarized light
https://dev.geosciencecollections.milne-library.org/files/original/492f9d61fa2d16952a2c234b8f381f8c.jpg
142493eb88b035ef39ea4fa6d9987677
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Sillimanite-garnet-quartz-feldspar gneiss-thin section plane polarized light
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(ADK) Anorthosite-Charnockite and Metamorphic Suite --
Adirondack Mountains, New York
Description
An account of the resource
The Adirondack Mountains of northern New York State are underlain by approximately 20,000 square miles of complexly deformed, high grade metamorphic rocks which are believed to represent a southern outlier of the much larger Grenville Province.The Adirondacks can be divided into the "Lowlands" and the "Highlands" . The Lowlands comprise the northwestern quarter of the belt and are characterized by amphibolite facies metamorphism. The Highlands appear to consist entirely of granulite facies rocks. All rocks in this suite have been collected from the Highlands and predominantly from the southern quarter of the Adirondacks.
This suite of rocks is designed to be representative of the Highlands in general. Therefore it includes both metasedimentary and metaigneous rocks. The latter are very common throughout the Adirondacks and contain the often-discussed anorthosite-charnockite suite of rocks. Almost all rocks in the Adirondack Highlands are strongly foliated. This is the result of intense polyphase deformation that has affected this area.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start here: <br /></strong>McLelland, J., and Selleck, B.W.,2011, Megacrystic Gore Mountain-type garnets in the Adirondack Highlands; age, origin, and tectonic implications:Geosphere, v.7, no. 5, p.1194-1208, doi: <a href="http://dx.doi.org/10.1130/GES00683.1" target="_blank">10.1130/GES00683.1</a>.<br /><ul><li>This article describes the formation of the megacrystic garnet amphibolites in the Gore Mountain section of the Adirondack Mountains. The authors conclude that three main factors influenced the garnet development: collapse of the Ottawan orogeny, intrusion of Lyon Mountain Granite, and fluid-related alteration at high temperature.</li>
</ul><p><strong>Additional resources:<br /></strong>McLelland, J.M., Bickford, M.E., Hill, B.M., Clechenko, C.C., Valley, J.W., and Hamilton, M.A., 2004, Direct dating of Adirondack Massif anorthosite by U-Pb SHRIMP analysis of igneous zircon; implications for AMCG complexes: Geological Society of America Bulletin, v.116, no. 11-12, p.1299-1317, doi: <a href="http://dx.doi.org/10.1130/B25482.1" target="_blank">10.1130/B25482.1</a>.</p>
<ul><li>This article describes techniques used to more accurately date the Adirondack Massif anorthosite.The authors concluded that the massifs <span>constitute a single, composite anorthosite-mangerite-charnockite-granite (AMCG) suite intruded at ca. 1155 Ma. Although the rock suite is considered to be coeval, the authors conclude the rocks are not comagmatic.</span></li>
</ul><p>McLelland, J., Bickford, M.E., Spear, F., and Storm, L., 2002, Geology and geochronolgy of the eastern Adirondacks in <span>New England Intercollegiate Geological Conference, 94th, New York State Geological Association 74th: guidebook for field trips in New York and Vermont : Lake George, New York<br /></span></p>
<ul><li>This field trip guide provides for nine stops in the eastern Adirondacks. It also include some thin sections images and zircon images from sample rocks of the field trip stops.</li>
</ul><p>McLelland, J., Daly, J.S., and McLelland, J.M., 1996, The Grenville orogenic cycle (ca. 1350-1000 Ma); an Adirondack perspective: Tectonophysics, v.265, issue 1-2, p.1-28, doi: <a href="http://dx.doi.org/10.1016/S0040-1951(96)00144-8" target="_blank">10.1016/S0040-1951(96)00144-8</a>.</p>
<ul><li>This article provides a detailed geochronological account of the Grenville orogeny (ca. 1350-1000 Ma) with emphasis on the impact it had on the formation of the Adirondack Mountains.</li>
</ul><p>McLelland, J., Lewis, A., and Moore, L., 1994, Composition and petrogenesis of oxide-, apatite-rich gabbronorites associated with Proterozoic anorthosite massifs: examples from the Adirondack Mountains, New York: Contributions to Mineralogy and Petrology, v.116, p.225-238, doi: <a href="http://dx.doi.org/10.1007/BF00310702" target="_blank">10.1007/BF00310702</a>.</p>
<ul><li>This article investigates the occurence of oxide-, apatite-rich gabbronorites with anorthosite massifs of the Adirondacks. The authors describe a multilple-step process of plagioclase crystal fractionation that ultimately leads to high concentrations of P, Fe, and Ti.</li>
</ul><p>New York State Geological Survey<br /><a href="http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html">http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html<br /></a></p>
<ul><li>The NYS Geological Survey is a division of the New York State Museum system. This web page provides some details about the Adirondack Highlands and pictures of various minerals found in this region.</li>
</ul><p>Regan, S.P., Chiarenzelli, J.R., McLelland, J.M., and Cousens, B. L., 2011, Evidence for an enriched asthenospheric source for coronitic metagabbros in the Adirondack Highlands: Geosphere, v.7, issue 3, p.<span> 694-709, doi: <a href="http://dx.doi.org/10.1130/GES00629.1" target="_blank">10.1130/GES00629.1</a>.<br /></span></p>
<ul><li>This article describes the formation of coronitc metagabbros through tectonic processes involving the asthenosphere. Through geochemical and isotopic analyses, the authors provide a timeline of tectonic and petrologic events that supports an asthenospheric source for coronitic metagabbros.</li>
</ul>
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
Temporal Coverage
Temporal characteristics of the resource.
The Adirondack Mountains were formed approximately 1.1- 1.3 billion years ago during the Grenville Orogeny (Precambrian eon, Proterozic era).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Spatial Coverage
Spatial characteristics of the resource.
This rock suite was collected from the Adirondack Mountains located in the northeastern part of New York State.
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Identifier
An unambiguous reference to the resource within a given context
AD-11
Title
A name given to the resource
Sillimanite-garnet-quartz-feldspar gneiss
Spatial Coverage
Spatial characteristics of the resource.
Adirondack Highlands-collected on NY Route 8 from a small road cut at the hilltop east of Graphite, NY and approximately 3 miles west of Hague, NY.
Temporal Coverage
Temporal characteristics of the resource.
Precambrian
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/7">Anorthosite-Charnockite and Metamorphic Suite-Adirondack Mountains, New York</a>
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Description
An account of the resource
This specimen is extremely rich in sillimanite. European geologists refer to such lithologies as "khondolites." This locality is very near some of the old graphite production sites west of Hague.
Thin section shows sillimanite, garnet, k-feldspar.
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
-
https://dev.geosciencecollections.milne-library.org/files/original/606d3ee95d54b6d9400d23acbc554df9.JPG
ee895595b6266a270c4fa3fe00f6da17
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Garnetiferous leucogneiss
https://dev.geosciencecollections.milne-library.org/files/original/13b5d867e8476724c5869fd965d53707.jpg
10bc39ba047c032918a8f4453e99c863
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Garnetiferous leucogneiss-thin section cross polarized light
https://dev.geosciencecollections.milne-library.org/files/original/c6c013820d0a9deb83d80153a0118bcf.jpg
af61f0611c6348d8ef963629b0f3f566
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Garnetiferous leucogneiss-thin section plane polarized light
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(ADK) Anorthosite-Charnockite and Metamorphic Suite --
Adirondack Mountains, New York
Description
An account of the resource
The Adirondack Mountains of northern New York State are underlain by approximately 20,000 square miles of complexly deformed, high grade metamorphic rocks which are believed to represent a southern outlier of the much larger Grenville Province.The Adirondacks can be divided into the "Lowlands" and the "Highlands" . The Lowlands comprise the northwestern quarter of the belt and are characterized by amphibolite facies metamorphism. The Highlands appear to consist entirely of granulite facies rocks. All rocks in this suite have been collected from the Highlands and predominantly from the southern quarter of the Adirondacks.
This suite of rocks is designed to be representative of the Highlands in general. Therefore it includes both metasedimentary and metaigneous rocks. The latter are very common throughout the Adirondacks and contain the often-discussed anorthosite-charnockite suite of rocks. Almost all rocks in the Adirondack Highlands are strongly foliated. This is the result of intense polyphase deformation that has affected this area.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start here: <br /></strong>McLelland, J., and Selleck, B.W.,2011, Megacrystic Gore Mountain-type garnets in the Adirondack Highlands; age, origin, and tectonic implications:Geosphere, v.7, no. 5, p.1194-1208, doi: <a href="http://dx.doi.org/10.1130/GES00683.1" target="_blank">10.1130/GES00683.1</a>.<br /><ul><li>This article describes the formation of the megacrystic garnet amphibolites in the Gore Mountain section of the Adirondack Mountains. The authors conclude that three main factors influenced the garnet development: collapse of the Ottawan orogeny, intrusion of Lyon Mountain Granite, and fluid-related alteration at high temperature.</li>
</ul><p><strong>Additional resources:<br /></strong>McLelland, J.M., Bickford, M.E., Hill, B.M., Clechenko, C.C., Valley, J.W., and Hamilton, M.A., 2004, Direct dating of Adirondack Massif anorthosite by U-Pb SHRIMP analysis of igneous zircon; implications for AMCG complexes: Geological Society of America Bulletin, v.116, no. 11-12, p.1299-1317, doi: <a href="http://dx.doi.org/10.1130/B25482.1" target="_blank">10.1130/B25482.1</a>.</p>
<ul><li>This article describes techniques used to more accurately date the Adirondack Massif anorthosite.The authors concluded that the massifs <span>constitute a single, composite anorthosite-mangerite-charnockite-granite (AMCG) suite intruded at ca. 1155 Ma. Although the rock suite is considered to be coeval, the authors conclude the rocks are not comagmatic.</span></li>
</ul><p>McLelland, J., Bickford, M.E., Spear, F., and Storm, L., 2002, Geology and geochronolgy of the eastern Adirondacks in <span>New England Intercollegiate Geological Conference, 94th, New York State Geological Association 74th: guidebook for field trips in New York and Vermont : Lake George, New York<br /></span></p>
<ul><li>This field trip guide provides for nine stops in the eastern Adirondacks. It also include some thin sections images and zircon images from sample rocks of the field trip stops.</li>
</ul><p>McLelland, J., Daly, J.S., and McLelland, J.M., 1996, The Grenville orogenic cycle (ca. 1350-1000 Ma); an Adirondack perspective: Tectonophysics, v.265, issue 1-2, p.1-28, doi: <a href="http://dx.doi.org/10.1016/S0040-1951(96)00144-8" target="_blank">10.1016/S0040-1951(96)00144-8</a>.</p>
<ul><li>This article provides a detailed geochronological account of the Grenville orogeny (ca. 1350-1000 Ma) with emphasis on the impact it had on the formation of the Adirondack Mountains.</li>
</ul><p>McLelland, J., Lewis, A., and Moore, L., 1994, Composition and petrogenesis of oxide-, apatite-rich gabbronorites associated with Proterozoic anorthosite massifs: examples from the Adirondack Mountains, New York: Contributions to Mineralogy and Petrology, v.116, p.225-238, doi: <a href="http://dx.doi.org/10.1007/BF00310702" target="_blank">10.1007/BF00310702</a>.</p>
<ul><li>This article investigates the occurence of oxide-, apatite-rich gabbronorites with anorthosite massifs of the Adirondacks. The authors describe a multilple-step process of plagioclase crystal fractionation that ultimately leads to high concentrations of P, Fe, and Ti.</li>
</ul><p>New York State Geological Survey<br /><a href="http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html">http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html<br /></a></p>
<ul><li>The NYS Geological Survey is a division of the New York State Museum system. This web page provides some details about the Adirondack Highlands and pictures of various minerals found in this region.</li>
</ul><p>Regan, S.P., Chiarenzelli, J.R., McLelland, J.M., and Cousens, B. L., 2011, Evidence for an enriched asthenospheric source for coronitic metagabbros in the Adirondack Highlands: Geosphere, v.7, issue 3, p.<span> 694-709, doi: <a href="http://dx.doi.org/10.1130/GES00629.1" target="_blank">10.1130/GES00629.1</a>.<br /></span></p>
<ul><li>This article describes the formation of coronitc metagabbros through tectonic processes involving the asthenosphere. Through geochemical and isotopic analyses, the authors provide a timeline of tectonic and petrologic events that supports an asthenospheric source for coronitic metagabbros.</li>
</ul>
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
Temporal Coverage
Temporal characteristics of the resource.
The Adirondack Mountains were formed approximately 1.1- 1.3 billion years ago during the Grenville Orogeny (Precambrian eon, Proterozic era).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Spatial Coverage
Spatial characteristics of the resource.
This rock suite was collected from the Adirondack Mountains located in the northeastern part of New York State.
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Sacandaga Formation
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Identifier
An unambiguous reference to the resource within a given context
AD-13
Title
A name given to the resource
Garnetiferous leucogneiss
Spatial Coverage
Spatial characteristics of the resource.
Adirondack Highlands-collected on NY Route 30 from the west side of a road cut just north of Pumpkin Hollow, 100 yards south of sample AD-12.
Temporal Coverage
Temporal characteristics of the resource.
Precambrian
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/7">Anorthosite-Charnockite and Metamorphic Suite-Adirondack Mountains, New York</a>
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
Description
An account of the resource
This rock type is characteristic of the light colored layers in the Sacandaga Formation. The mineralogy consists of garnet, feldspar, and quartz. Occasionally, sillimanite and skeletal oxides occur. Both plagioclase and microcline are present. Quartz modes occur as high as 40-50%.
Thin section shows quartz, plagioclase and garnet.
-
https://dev.geosciencecollections.milne-library.org/files/original/699794817e56ab3f3c933b9877efe45a.JPG
14a78a13570d6c0227f565a751073ce3
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Tennantville gabbroic anorthosite
https://dev.geosciencecollections.milne-library.org/files/original/bfe40e12d218f4651d820d3acd9b1410.jpg
ded5cc862150ac50772d4b356e657da5
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Tennantville gabbroic anorthosite-thin section cross polarized light
https://dev.geosciencecollections.milne-library.org/files/original/42bcc080d1c9372d77c2a45ce75fd398.jpg
2f74f27a69ccf7b94b2c1a9f3bc79e3f
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Tennantville gabbroic anorthosite-thin section plane polarized light
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(ADK) Anorthosite-Charnockite and Metamorphic Suite --
Adirondack Mountains, New York
Description
An account of the resource
The Adirondack Mountains of northern New York State are underlain by approximately 20,000 square miles of complexly deformed, high grade metamorphic rocks which are believed to represent a southern outlier of the much larger Grenville Province.The Adirondacks can be divided into the "Lowlands" and the "Highlands" . The Lowlands comprise the northwestern quarter of the belt and are characterized by amphibolite facies metamorphism. The Highlands appear to consist entirely of granulite facies rocks. All rocks in this suite have been collected from the Highlands and predominantly from the southern quarter of the Adirondacks.
This suite of rocks is designed to be representative of the Highlands in general. Therefore it includes both metasedimentary and metaigneous rocks. The latter are very common throughout the Adirondacks and contain the often-discussed anorthosite-charnockite suite of rocks. Almost all rocks in the Adirondack Highlands are strongly foliated. This is the result of intense polyphase deformation that has affected this area.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start here: <br /></strong>McLelland, J., and Selleck, B.W.,2011, Megacrystic Gore Mountain-type garnets in the Adirondack Highlands; age, origin, and tectonic implications:Geosphere, v.7, no. 5, p.1194-1208, doi: <a href="http://dx.doi.org/10.1130/GES00683.1" target="_blank">10.1130/GES00683.1</a>.<br /><ul><li>This article describes the formation of the megacrystic garnet amphibolites in the Gore Mountain section of the Adirondack Mountains. The authors conclude that three main factors influenced the garnet development: collapse of the Ottawan orogeny, intrusion of Lyon Mountain Granite, and fluid-related alteration at high temperature.</li>
</ul><p><strong>Additional resources:<br /></strong>McLelland, J.M., Bickford, M.E., Hill, B.M., Clechenko, C.C., Valley, J.W., and Hamilton, M.A., 2004, Direct dating of Adirondack Massif anorthosite by U-Pb SHRIMP analysis of igneous zircon; implications for AMCG complexes: Geological Society of America Bulletin, v.116, no. 11-12, p.1299-1317, doi: <a href="http://dx.doi.org/10.1130/B25482.1" target="_blank">10.1130/B25482.1</a>.</p>
<ul><li>This article describes techniques used to more accurately date the Adirondack Massif anorthosite.The authors concluded that the massifs <span>constitute a single, composite anorthosite-mangerite-charnockite-granite (AMCG) suite intruded at ca. 1155 Ma. Although the rock suite is considered to be coeval, the authors conclude the rocks are not comagmatic.</span></li>
</ul><p>McLelland, J., Bickford, M.E., Spear, F., and Storm, L., 2002, Geology and geochronolgy of the eastern Adirondacks in <span>New England Intercollegiate Geological Conference, 94th, New York State Geological Association 74th: guidebook for field trips in New York and Vermont : Lake George, New York<br /></span></p>
<ul><li>This field trip guide provides for nine stops in the eastern Adirondacks. It also include some thin sections images and zircon images from sample rocks of the field trip stops.</li>
</ul><p>McLelland, J., Daly, J.S., and McLelland, J.M., 1996, The Grenville orogenic cycle (ca. 1350-1000 Ma); an Adirondack perspective: Tectonophysics, v.265, issue 1-2, p.1-28, doi: <a href="http://dx.doi.org/10.1016/S0040-1951(96)00144-8" target="_blank">10.1016/S0040-1951(96)00144-8</a>.</p>
<ul><li>This article provides a detailed geochronological account of the Grenville orogeny (ca. 1350-1000 Ma) with emphasis on the impact it had on the formation of the Adirondack Mountains.</li>
</ul><p>McLelland, J., Lewis, A., and Moore, L., 1994, Composition and petrogenesis of oxide-, apatite-rich gabbronorites associated with Proterozoic anorthosite massifs: examples from the Adirondack Mountains, New York: Contributions to Mineralogy and Petrology, v.116, p.225-238, doi: <a href="http://dx.doi.org/10.1007/BF00310702" target="_blank">10.1007/BF00310702</a>.</p>
<ul><li>This article investigates the occurence of oxide-, apatite-rich gabbronorites with anorthosite massifs of the Adirondacks. The authors describe a multilple-step process of plagioclase crystal fractionation that ultimately leads to high concentrations of P, Fe, and Ti.</li>
</ul><p>New York State Geological Survey<br /><a href="http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html">http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html<br /></a></p>
<ul><li>The NYS Geological Survey is a division of the New York State Museum system. This web page provides some details about the Adirondack Highlands and pictures of various minerals found in this region.</li>
</ul><p>Regan, S.P., Chiarenzelli, J.R., McLelland, J.M., and Cousens, B. L., 2011, Evidence for an enriched asthenospheric source for coronitic metagabbros in the Adirondack Highlands: Geosphere, v.7, issue 3, p.<span> 694-709, doi: <a href="http://dx.doi.org/10.1130/GES00629.1" target="_blank">10.1130/GES00629.1</a>.<br /></span></p>
<ul><li>This article describes the formation of coronitc metagabbros through tectonic processes involving the asthenosphere. Through geochemical and isotopic analyses, the authors provide a timeline of tectonic and petrologic events that supports an asthenospheric source for coronitic metagabbros.</li>
</ul>
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
Temporal Coverage
Temporal characteristics of the resource.
The Adirondack Mountains were formed approximately 1.1- 1.3 billion years ago during the Grenville Orogeny (Precambrian eon, Proterozic era).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Spatial Coverage
Spatial characteristics of the resource.
This rock suite was collected from the Adirondack Mountains located in the northeastern part of New York State.
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Identifier
An unambiguous reference to the resource within a given context
AD-14
Title
A name given to the resource
Tennantville gabbroic anorthosite
Spatial Coverage
Spatial characteristics of the resource.
Adirondack Highlands-collected from a low road cut on Military Road at the north edge of the Edinburg Quadrant.
Temporal Coverage
Temporal characteristics of the resource.
Precambrian
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/7">Anorthosite-Charnockite and Metamorphic Suite-Adirondack Mountains, New York</a>
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Description
An account of the resource
This medium grained facies is one of a number of anorthositic sheets that intrude throughout the stratigraphic section of the southern Adirondacks. A chemical analyses of specimens from this outcrop yield results that are almost identical with Buddington's (1939) average gabbroic anorthosite.<br /><table><tbody><tr><td>
<p>Â </p>
</td>
<td>
<p><br />Tennantville locality (McFarland)</p>
</td>
<td>
<p>Average Gabbroic<br />Anorthosite (Buddington)</p>
</td>
</tr><tr><td>
<p>SiOâ‚‚</p>
</td>
<td>
<p>52.36</p>
</td>
<td>
<p>52.37</p>
</td>
</tr><tr><td>
<p>TiOâ‚‚</p>
</td>
<td>
<p>1.14</p>
</td>
<td>
<p>-</p>
</td>
</tr><tr><td>
<p>Al₂O₃</p>
</td>
<td>
<p>23.75</p>
</td>
<td>
<p>24.68</p>
</td>
</tr><tr><td>
<p>Fe₂O₃</p>
</td>
<td>
<p>1.11</p>
</td>
<td>
<p>1.24</p>
</td>
</tr><tr><td>
<p>FeO</p>
</td>
<td>
<p>3.96</p>
</td>
<td>
<p>3.49</p>
</td>
</tr><tr><td>
<p>MnO</p>
</td>
<td>
<p>.07</p>
</td>
<td>
<p>-</p>
</td>
</tr><tr><td>
<p>MgO</p>
</td>
<td>
<p>1.53</p>
</td>
<td>
<p>2.0</p>
</td>
</tr><tr><td>
<p>CaO</p>
</td>
<td>
<p>10.63</p>
</td>
<td>
<p>10.57</p>
</td>
</tr><tr><td>
<p>Naâ‚‚O</p>
</td>
<td>
<p>3.69</p>
</td>
<td>
<p>4.02</p>
</td>
</tr><tr><td>
<p>Kâ‚‚O</p>
</td>
<td>
<p>.90</p>
</td>
<td>
<p>.86</p>
</td>
</tr><tr><td>
<p>Pâ‚‚Oâ‚…</p>
</td>
<td>
<p>.16</p>
</td>
<td>
<p>-</p>
</td>
</tr><tr><td>
<p>Hâ‚‚O+</p>
</td>
<td>
<p>.69</p>
</td>
<td>
<p>.90</p>
</td>
</tr><tr><td>
<p>Total</p>
</td>
<td>
<p>99.99%</p>
</td>
<td>
<p>100.13%</p>
</td>
</tr></tbody></table>
The existence of these instrusive sheets of gabbroic anorthosite argues strongly against the proposition that the anorthositic rocks constitute part of an older, pre-Grenvillian basement complex. Rocks similar to the Tennantville gabbroic anorthosite commonly occur as border facies surrounding larger, coarser bodies of anorthosite. Spongy, brick-red garnets are common in these rocks.<br />Thin section shows plagioclase and clinopyroxene.
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
-
https://dev.geosciencecollections.milne-library.org/files/original/a746f5171b47d4307394a1322744582d.JPG
f3d98194aa1177666b240412cea810ac
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Anorthosite
https://dev.geosciencecollections.milne-library.org/files/original/2da066291265231b666ea1f90623223c.jpg
d58ec77ed16d1d8600730744a89640b1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Anorthosite-thin section cross polarized light
https://dev.geosciencecollections.milne-library.org/files/original/15f2015abf31d098b4dcd803b0a051ad.jpg
97c32e8f4bbc10919d3085368675ab03
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Anorthosite-thin section plane polarized light
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(ADK) Anorthosite-Charnockite and Metamorphic Suite --
Adirondack Mountains, New York
Description
An account of the resource
The Adirondack Mountains of northern New York State are underlain by approximately 20,000 square miles of complexly deformed, high grade metamorphic rocks which are believed to represent a southern outlier of the much larger Grenville Province.The Adirondacks can be divided into the "Lowlands" and the "Highlands" . The Lowlands comprise the northwestern quarter of the belt and are characterized by amphibolite facies metamorphism. The Highlands appear to consist entirely of granulite facies rocks. All rocks in this suite have been collected from the Highlands and predominantly from the southern quarter of the Adirondacks.
This suite of rocks is designed to be representative of the Highlands in general. Therefore it includes both metasedimentary and metaigneous rocks. The latter are very common throughout the Adirondacks and contain the often-discussed anorthosite-charnockite suite of rocks. Almost all rocks in the Adirondack Highlands are strongly foliated. This is the result of intense polyphase deformation that has affected this area.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start here: <br /></strong>McLelland, J., and Selleck, B.W.,2011, Megacrystic Gore Mountain-type garnets in the Adirondack Highlands; age, origin, and tectonic implications:Geosphere, v.7, no. 5, p.1194-1208, doi: <a href="http://dx.doi.org/10.1130/GES00683.1" target="_blank">10.1130/GES00683.1</a>.<br /><ul><li>This article describes the formation of the megacrystic garnet amphibolites in the Gore Mountain section of the Adirondack Mountains. The authors conclude that three main factors influenced the garnet development: collapse of the Ottawan orogeny, intrusion of Lyon Mountain Granite, and fluid-related alteration at high temperature.</li>
</ul><p><strong>Additional resources:<br /></strong>McLelland, J.M., Bickford, M.E., Hill, B.M., Clechenko, C.C., Valley, J.W., and Hamilton, M.A., 2004, Direct dating of Adirondack Massif anorthosite by U-Pb SHRIMP analysis of igneous zircon; implications for AMCG complexes: Geological Society of America Bulletin, v.116, no. 11-12, p.1299-1317, doi: <a href="http://dx.doi.org/10.1130/B25482.1" target="_blank">10.1130/B25482.1</a>.</p>
<ul><li>This article describes techniques used to more accurately date the Adirondack Massif anorthosite.The authors concluded that the massifs <span>constitute a single, composite anorthosite-mangerite-charnockite-granite (AMCG) suite intruded at ca. 1155 Ma. Although the rock suite is considered to be coeval, the authors conclude the rocks are not comagmatic.</span></li>
</ul><p>McLelland, J., Bickford, M.E., Spear, F., and Storm, L., 2002, Geology and geochronolgy of the eastern Adirondacks in <span>New England Intercollegiate Geological Conference, 94th, New York State Geological Association 74th: guidebook for field trips in New York and Vermont : Lake George, New York<br /></span></p>
<ul><li>This field trip guide provides for nine stops in the eastern Adirondacks. It also include some thin sections images and zircon images from sample rocks of the field trip stops.</li>
</ul><p>McLelland, J., Daly, J.S., and McLelland, J.M., 1996, The Grenville orogenic cycle (ca. 1350-1000 Ma); an Adirondack perspective: Tectonophysics, v.265, issue 1-2, p.1-28, doi: <a href="http://dx.doi.org/10.1016/S0040-1951(96)00144-8" target="_blank">10.1016/S0040-1951(96)00144-8</a>.</p>
<ul><li>This article provides a detailed geochronological account of the Grenville orogeny (ca. 1350-1000 Ma) with emphasis on the impact it had on the formation of the Adirondack Mountains.</li>
</ul><p>McLelland, J., Lewis, A., and Moore, L., 1994, Composition and petrogenesis of oxide-, apatite-rich gabbronorites associated with Proterozoic anorthosite massifs: examples from the Adirondack Mountains, New York: Contributions to Mineralogy and Petrology, v.116, p.225-238, doi: <a href="http://dx.doi.org/10.1007/BF00310702" target="_blank">10.1007/BF00310702</a>.</p>
<ul><li>This article investigates the occurence of oxide-, apatite-rich gabbronorites with anorthosite massifs of the Adirondacks. The authors describe a multilple-step process of plagioclase crystal fractionation that ultimately leads to high concentrations of P, Fe, and Ti.</li>
</ul><p>New York State Geological Survey<br /><a href="http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html">http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html<br /></a></p>
<ul><li>The NYS Geological Survey is a division of the New York State Museum system. This web page provides some details about the Adirondack Highlands and pictures of various minerals found in this region.</li>
</ul><p>Regan, S.P., Chiarenzelli, J.R., McLelland, J.M., and Cousens, B. L., 2011, Evidence for an enriched asthenospheric source for coronitic metagabbros in the Adirondack Highlands: Geosphere, v.7, issue 3, p.<span> 694-709, doi: <a href="http://dx.doi.org/10.1130/GES00629.1" target="_blank">10.1130/GES00629.1</a>.<br /></span></p>
<ul><li>This article describes the formation of coronitc metagabbros through tectonic processes involving the asthenosphere. Through geochemical and isotopic analyses, the authors provide a timeline of tectonic and petrologic events that supports an asthenospheric source for coronitic metagabbros.</li>
</ul>
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
Temporal Coverage
Temporal characteristics of the resource.
The Adirondack Mountains were formed approximately 1.1- 1.3 billion years ago during the Grenville Orogeny (Precambrian eon, Proterozic era).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Spatial Coverage
Spatial characteristics of the resource.
This rock suite was collected from the Adirondack Mountains located in the northeastern part of New York State.
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Oregon Dome Massif
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Identifier
An unambiguous reference to the resource within a given context
AD-17
Title
A name given to the resource
Anorthosite
Spatial Coverage
Spatial characteristics of the resource.
Adirondack Highlands-collected from a road cut on NY Route 30, 1/2 mile south of junction old route 30 and about 2 miles north of junction NY Route 8.
Temporal Coverage
Temporal characteristics of the resource.
Precambrian
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/7">Anorthosite-Charnockite and Metamorphic Suite-Adirondack Mountains, New York</a>
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Description
An account of the resource
The specimen was collected from the Oregon Dome Massif. The Oregon Dome is similar in all respects to the anorthosites described and analyzed by Buddington (1939) for the Adirondack High Peaks region (Marcy Massif). Texturally, the present specimens are partly granulated and are fairly typical of Adirondack anorthosites situated near the margins of the massifs. Of particular interest in this specimen is the occurrence of garnet. In general, this rims both oxides, usually ilmenite and clinopyroxene (and sometimes cored by orthopyroxene). The assemblage is typical of garnet-clinopyroxene subfacies of the granulite (deWaard, 1965).
The following information is from the original OCR document: The reactions producing this assemblage have been discussed by McLelland and Whitney, "Origin of Garnet in the Anorthosite-Charnockite Suite of the Adirondacks" 1977, Contributions to Mineralogy and Petrology, v. 60, p.161-181.
Thin section shows plagioclase and orthopyroxene.
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
-
https://dev.geosciencecollections.milne-library.org/files/original/03cda701b66f2dfc367ec01c10943bea.JPG
98a731a14fbc3aafbe3400040394b1b3
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Two Pyroxene-spinel metagabbro
https://dev.geosciencecollections.milne-library.org/files/original/5ff49686be73c1eaf1376b8661c8ea5b.JPG
b670fee5ae90a7a09686159f3564f842
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Two Pyroxene-spinel metagabbro
https://dev.geosciencecollections.milne-library.org/files/original/f370ffb98aac7ae376307f2ba32359d0.jpg
aaf77c16cc14ef30e3e7ca47556cfea3
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Two Pyroxene-spinel metagabbro-thin section cross polarized light
https://dev.geosciencecollections.milne-library.org/files/original/f8441ffc2737cb8d6edb6226d4acd033.jpg
d0df95a566b822bedc5958e34b060914
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Two Pyroxene-spinel metagabbro-thin section plane polarized light
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(ADK) Anorthosite-Charnockite and Metamorphic Suite --
Adirondack Mountains, New York
Description
An account of the resource
The Adirondack Mountains of northern New York State are underlain by approximately 20,000 square miles of complexly deformed, high grade metamorphic rocks which are believed to represent a southern outlier of the much larger Grenville Province.The Adirondacks can be divided into the "Lowlands" and the "Highlands" . The Lowlands comprise the northwestern quarter of the belt and are characterized by amphibolite facies metamorphism. The Highlands appear to consist entirely of granulite facies rocks. All rocks in this suite have been collected from the Highlands and predominantly from the southern quarter of the Adirondacks.
This suite of rocks is designed to be representative of the Highlands in general. Therefore it includes both metasedimentary and metaigneous rocks. The latter are very common throughout the Adirondacks and contain the often-discussed anorthosite-charnockite suite of rocks. Almost all rocks in the Adirondack Highlands are strongly foliated. This is the result of intense polyphase deformation that has affected this area.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start here: <br /></strong>McLelland, J., and Selleck, B.W.,2011, Megacrystic Gore Mountain-type garnets in the Adirondack Highlands; age, origin, and tectonic implications:Geosphere, v.7, no. 5, p.1194-1208, doi: <a href="http://dx.doi.org/10.1130/GES00683.1" target="_blank">10.1130/GES00683.1</a>.<br /><ul><li>This article describes the formation of the megacrystic garnet amphibolites in the Gore Mountain section of the Adirondack Mountains. The authors conclude that three main factors influenced the garnet development: collapse of the Ottawan orogeny, intrusion of Lyon Mountain Granite, and fluid-related alteration at high temperature.</li>
</ul><p><strong>Additional resources:<br /></strong>McLelland, J.M., Bickford, M.E., Hill, B.M., Clechenko, C.C., Valley, J.W., and Hamilton, M.A., 2004, Direct dating of Adirondack Massif anorthosite by U-Pb SHRIMP analysis of igneous zircon; implications for AMCG complexes: Geological Society of America Bulletin, v.116, no. 11-12, p.1299-1317, doi: <a href="http://dx.doi.org/10.1130/B25482.1" target="_blank">10.1130/B25482.1</a>.</p>
<ul><li>This article describes techniques used to more accurately date the Adirondack Massif anorthosite.The authors concluded that the massifs <span>constitute a single, composite anorthosite-mangerite-charnockite-granite (AMCG) suite intruded at ca. 1155 Ma. Although the rock suite is considered to be coeval, the authors conclude the rocks are not comagmatic.</span></li>
</ul><p>McLelland, J., Bickford, M.E., Spear, F., and Storm, L., 2002, Geology and geochronolgy of the eastern Adirondacks in <span>New England Intercollegiate Geological Conference, 94th, New York State Geological Association 74th: guidebook for field trips in New York and Vermont : Lake George, New York<br /></span></p>
<ul><li>This field trip guide provides for nine stops in the eastern Adirondacks. It also include some thin sections images and zircon images from sample rocks of the field trip stops.</li>
</ul><p>McLelland, J., Daly, J.S., and McLelland, J.M., 1996, The Grenville orogenic cycle (ca. 1350-1000 Ma); an Adirondack perspective: Tectonophysics, v.265, issue 1-2, p.1-28, doi: <a href="http://dx.doi.org/10.1016/S0040-1951(96)00144-8" target="_blank">10.1016/S0040-1951(96)00144-8</a>.</p>
<ul><li>This article provides a detailed geochronological account of the Grenville orogeny (ca. 1350-1000 Ma) with emphasis on the impact it had on the formation of the Adirondack Mountains.</li>
</ul><p>McLelland, J., Lewis, A., and Moore, L., 1994, Composition and petrogenesis of oxide-, apatite-rich gabbronorites associated with Proterozoic anorthosite massifs: examples from the Adirondack Mountains, New York: Contributions to Mineralogy and Petrology, v.116, p.225-238, doi: <a href="http://dx.doi.org/10.1007/BF00310702" target="_blank">10.1007/BF00310702</a>.</p>
<ul><li>This article investigates the occurence of oxide-, apatite-rich gabbronorites with anorthosite massifs of the Adirondacks. The authors describe a multilple-step process of plagioclase crystal fractionation that ultimately leads to high concentrations of P, Fe, and Ti.</li>
</ul><p>New York State Geological Survey<br /><a href="http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html">http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html<br /></a></p>
<ul><li>The NYS Geological Survey is a division of the New York State Museum system. This web page provides some details about the Adirondack Highlands and pictures of various minerals found in this region.</li>
</ul><p>Regan, S.P., Chiarenzelli, J.R., McLelland, J.M., and Cousens, B. L., 2011, Evidence for an enriched asthenospheric source for coronitic metagabbros in the Adirondack Highlands: Geosphere, v.7, issue 3, p.<span> 694-709, doi: <a href="http://dx.doi.org/10.1130/GES00629.1" target="_blank">10.1130/GES00629.1</a>.<br /></span></p>
<ul><li>This article describes the formation of coronitc metagabbros through tectonic processes involving the asthenosphere. Through geochemical and isotopic analyses, the authors provide a timeline of tectonic and petrologic events that supports an asthenospheric source for coronitic metagabbros.</li>
</ul>
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
Temporal Coverage
Temporal characteristics of the resource.
The Adirondack Mountains were formed approximately 1.1- 1.3 billion years ago during the Grenville Orogeny (Precambrian eon, Proterozic era).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Spatial Coverage
Spatial characteristics of the resource.
This rock suite was collected from the Adirondack Mountains located in the northeastern part of New York State.
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Identifier
An unambiguous reference to the resource within a given context
AD-19
Title
A name given to the resource
Two Pyroxene-spinel metagabbro
Spatial Coverage
Spatial characteristics of the resource.
Adirondack Highlands-collected from the first high hill just southwest of the intersection of NY Route 30 and Benson Rd., approximately 2 miles northwest of Northville, NY.
Temporal Coverage
Temporal characteristics of the resource.
Precambrian
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/7">Anorthosite-Charnockite and Metamorphic Suite-Adirondack Mountns, New York</a>
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
Description
An account of the resource
The locality near Northville, NY represents the only example of this assemblage that has been encountered to date (1980) in the Adirondacks. The original lithology is that of a typical olivine metagabbro. During granulite facies metamorphism, reactions produced coronas consisting of orthopyroxene rims on olivine and spinel-clinopyroxene symplectites. Amphibole-spinel coronas also occur. These assemblages appear to represent lower pressure conditions than prevailed during the formation of the garnet-bearing assemblages represented by AD-16.
The following information is from the original OCR document: The mineralogy and textural features of these metagabbros are discussed in McLelland and Whitney, 1980, Contributions to Mineralogy and Petrology, v.72, p.111, specimen 17 and Whitney and McLelland, "Origin of Coronas in Olivine Metagabbros of the Adirondack Mountains, NY," 1973, Contributions to Mineralogy and Petrology, v. 39, p.81-98. The specimen you receive may be somewhat smaller than the regular specimens. Dr. James McLelland collected this material especially for this suite-and in 100° temperature. Thank you, Jim.
Thin section shows augite, spinel and plagioclase.
-
https://dev.geosciencecollections.milne-library.org/files/original/632fb646bbdbc5ae2294862f6365237c.JPG
ff0fc7ba39b204d499e426aedf29a14d
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Mangerite-charnockite
https://dev.geosciencecollections.milne-library.org/files/original/ac88a0184446400286715e949eb24f72.jpg
c5004c58ebc2a22798cf4a1aecba72a0
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Mangerite-charnockite-thin section cross polarized light
https://dev.geosciencecollections.milne-library.org/files/original/82d3c15432643468633bc8fdb7726c5b.jpg
dbc258482303fdc47377c53b48c35a16
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Mangerite-charnockite-thin section plane polarized light
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(ADK) Anorthosite-Charnockite and Metamorphic Suite --
Adirondack Mountains, New York
Description
An account of the resource
The Adirondack Mountains of northern New York State are underlain by approximately 20,000 square miles of complexly deformed, high grade metamorphic rocks which are believed to represent a southern outlier of the much larger Grenville Province.The Adirondacks can be divided into the "Lowlands" and the "Highlands" . The Lowlands comprise the northwestern quarter of the belt and are characterized by amphibolite facies metamorphism. The Highlands appear to consist entirely of granulite facies rocks. All rocks in this suite have been collected from the Highlands and predominantly from the southern quarter of the Adirondacks.
This suite of rocks is designed to be representative of the Highlands in general. Therefore it includes both metasedimentary and metaigneous rocks. The latter are very common throughout the Adirondacks and contain the often-discussed anorthosite-charnockite suite of rocks. Almost all rocks in the Adirondack Highlands are strongly foliated. This is the result of intense polyphase deformation that has affected this area.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start here: <br /></strong>McLelland, J., and Selleck, B.W.,2011, Megacrystic Gore Mountain-type garnets in the Adirondack Highlands; age, origin, and tectonic implications:Geosphere, v.7, no. 5, p.1194-1208, doi: <a href="http://dx.doi.org/10.1130/GES00683.1" target="_blank">10.1130/GES00683.1</a>.<br /><ul><li>This article describes the formation of the megacrystic garnet amphibolites in the Gore Mountain section of the Adirondack Mountains. The authors conclude that three main factors influenced the garnet development: collapse of the Ottawan orogeny, intrusion of Lyon Mountain Granite, and fluid-related alteration at high temperature.</li>
</ul><p><strong>Additional resources:<br /></strong>McLelland, J.M., Bickford, M.E., Hill, B.M., Clechenko, C.C., Valley, J.W., and Hamilton, M.A., 2004, Direct dating of Adirondack Massif anorthosite by U-Pb SHRIMP analysis of igneous zircon; implications for AMCG complexes: Geological Society of America Bulletin, v.116, no. 11-12, p.1299-1317, doi: <a href="http://dx.doi.org/10.1130/B25482.1" target="_blank">10.1130/B25482.1</a>.</p>
<ul><li>This article describes techniques used to more accurately date the Adirondack Massif anorthosite.The authors concluded that the massifs <span>constitute a single, composite anorthosite-mangerite-charnockite-granite (AMCG) suite intruded at ca. 1155 Ma. Although the rock suite is considered to be coeval, the authors conclude the rocks are not comagmatic.</span></li>
</ul><p>McLelland, J., Bickford, M.E., Spear, F., and Storm, L., 2002, Geology and geochronolgy of the eastern Adirondacks in <span>New England Intercollegiate Geological Conference, 94th, New York State Geological Association 74th: guidebook for field trips in New York and Vermont : Lake George, New York<br /></span></p>
<ul><li>This field trip guide provides for nine stops in the eastern Adirondacks. It also include some thin sections images and zircon images from sample rocks of the field trip stops.</li>
</ul><p>McLelland, J., Daly, J.S., and McLelland, J.M., 1996, The Grenville orogenic cycle (ca. 1350-1000 Ma); an Adirondack perspective: Tectonophysics, v.265, issue 1-2, p.1-28, doi: <a href="http://dx.doi.org/10.1016/S0040-1951(96)00144-8" target="_blank">10.1016/S0040-1951(96)00144-8</a>.</p>
<ul><li>This article provides a detailed geochronological account of the Grenville orogeny (ca. 1350-1000 Ma) with emphasis on the impact it had on the formation of the Adirondack Mountains.</li>
</ul><p>McLelland, J., Lewis, A., and Moore, L., 1994, Composition and petrogenesis of oxide-, apatite-rich gabbronorites associated with Proterozoic anorthosite massifs: examples from the Adirondack Mountains, New York: Contributions to Mineralogy and Petrology, v.116, p.225-238, doi: <a href="http://dx.doi.org/10.1007/BF00310702" target="_blank">10.1007/BF00310702</a>.</p>
<ul><li>This article investigates the occurence of oxide-, apatite-rich gabbronorites with anorthosite massifs of the Adirondacks. The authors describe a multilple-step process of plagioclase crystal fractionation that ultimately leads to high concentrations of P, Fe, and Ti.</li>
</ul><p>New York State Geological Survey<br /><a href="http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html">http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html<br /></a></p>
<ul><li>The NYS Geological Survey is a division of the New York State Museum system. This web page provides some details about the Adirondack Highlands and pictures of various minerals found in this region.</li>
</ul><p>Regan, S.P., Chiarenzelli, J.R., McLelland, J.M., and Cousens, B. L., 2011, Evidence for an enriched asthenospheric source for coronitic metagabbros in the Adirondack Highlands: Geosphere, v.7, issue 3, p.<span> 694-709, doi: <a href="http://dx.doi.org/10.1130/GES00629.1" target="_blank">10.1130/GES00629.1</a>.<br /></span></p>
<ul><li>This article describes the formation of coronitc metagabbros through tectonic processes involving the asthenosphere. Through geochemical and isotopic analyses, the authors provide a timeline of tectonic and petrologic events that supports an asthenospheric source for coronitic metagabbros.</li>
</ul>
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
Temporal Coverage
Temporal characteristics of the resource.
The Adirondack Mountains were formed approximately 1.1- 1.3 billion years ago during the Grenville Orogeny (Precambrian eon, Proterozic era).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Spatial Coverage
Spatial characteristics of the resource.
This rock suite was collected from the Adirondack Mountains located in the northeastern part of New York State.
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Mangerite-charnockite
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/7">Anorthosite-Charnockite and Metamorphic Suite-Adirondack Mountians, New York</a>
Identifier
An unambiguous reference to the resource within a given context
AD-20
Spatial Coverage
Spatial characteristics of the resource.
Adirondack Highlands-collected from a road cut on NY Route 30 approximately 3 miles southwest of Tupper Lake.
Temporal Coverage
Temporal characteristics of the resource.
Precambrian
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Description
An account of the resource
This specimen is typical of the metaigneous charnockitic rocks associated with the massif anorthosites in the Adirondacks. With variation in the quantity of modal quartz, the rock qualifies as either a charnockite or a mangerite. Quartz content is sufficiently variable to result in both rock types in a single outcrop. These rocks are part of the Mt. Arab complex (earlier referred to as the Tupper Lake Complex (Buddington 1939 p. 116)). The average modes of the mangerite (pyroxene syenite gneiss) and the associated charnockites are:<br /><table style="height:240px;"><tbody><tr><td>
<p>Â </p>
</td>
<td>
<p>Pyroxene syenite gneiss (1)</p>
</td>
<td>
<p>Charnockite (2)</p>
</td>
</tr><tr><td>
<p>Microperthite</p>
</td>
<td>
<p>46</p>
</td>
<td>
<p>46</p>
</td>
</tr><tr><td>
<p>Oligoclase</p>
</td>
<td>
<p>42</p>
</td>
<td>
<p>24</p>
</td>
</tr><tr><td>
<p>Quartz</p>
</td>
<td>
<p>3.3</p>
</td>
<td>
<p>16</p>
</td>
</tr><tr><td>
<p>Ferrohypersthene</p>
</td>
<td>
<p>2.0</p>
</td>
<td>
<p>6</p>
</td>
</tr><tr><td>
<p>Ferroaugite</p>
</td>
<td>
<p>3.6</p>
</td>
<td>
<p>1.4</p>
</td>
</tr><tr><td>
<p>Hornblende</p>
</td>
<td>
<p>1.8</p>
</td>
<td>
<p>2.8</p>
</td>
</tr><tr><td>
<p>Garnet</p>
</td>
<td>
<p>-</p>
</td>
<td>
<p>0.5</p>
</td>
</tr><tr><td>
<p>Â </p>
</td>
<td>
<p>Â </p>
</td>
<td>
<p>Â </p>
</td>
</tr><tr><td>
<p>(1)Â Â Â McLelland average of 5</p>
<p>(2)Â Â Â Analysis 112, Table 32, Buddington, 1939<br /><br /></p>
</td>
</tr></tbody></table>
Thin section shows K-feldspar, plagioclase and hypersthene.
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
-
https://dev.geosciencecollections.milne-library.org/files/original/4fc9868fe9af3a63893e4eb2a829eed5.JPG
d4a28491e1b4ecbc1ff60482371c8d06
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Fayalite-ferrohedenbergite-mesoperthite granite
https://dev.geosciencecollections.milne-library.org/files/original/c6b04b659b71989adf350477999ec7aa.jpg
ce39803db4522ccf4dab63b44cb6d1dd
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Fayalite-ferrohedenbergite-mesoperthite granite-thin section cross polarized light
https://dev.geosciencecollections.milne-library.org/files/original/e23c2fec93a70a3859d57a7138b25eae.jpg
96db555319c401a40256486cbbd64a5d
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Fayalite-ferrohedenbergite-mesoperthite granite-thin section cross polarized light
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(ADK) Anorthosite-Charnockite and Metamorphic Suite --
Adirondack Mountains, New York
Description
An account of the resource
The Adirondack Mountains of northern New York State are underlain by approximately 20,000 square miles of complexly deformed, high grade metamorphic rocks which are believed to represent a southern outlier of the much larger Grenville Province.The Adirondacks can be divided into the "Lowlands" and the "Highlands" . The Lowlands comprise the northwestern quarter of the belt and are characterized by amphibolite facies metamorphism. The Highlands appear to consist entirely of granulite facies rocks. All rocks in this suite have been collected from the Highlands and predominantly from the southern quarter of the Adirondacks.
This suite of rocks is designed to be representative of the Highlands in general. Therefore it includes both metasedimentary and metaigneous rocks. The latter are very common throughout the Adirondacks and contain the often-discussed anorthosite-charnockite suite of rocks. Almost all rocks in the Adirondack Highlands are strongly foliated. This is the result of intense polyphase deformation that has affected this area.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start here: <br /></strong>McLelland, J., and Selleck, B.W.,2011, Megacrystic Gore Mountain-type garnets in the Adirondack Highlands; age, origin, and tectonic implications:Geosphere, v.7, no. 5, p.1194-1208, doi: <a href="http://dx.doi.org/10.1130/GES00683.1" target="_blank">10.1130/GES00683.1</a>.<br /><ul><li>This article describes the formation of the megacrystic garnet amphibolites in the Gore Mountain section of the Adirondack Mountains. The authors conclude that three main factors influenced the garnet development: collapse of the Ottawan orogeny, intrusion of Lyon Mountain Granite, and fluid-related alteration at high temperature.</li>
</ul><p><strong>Additional resources:<br /></strong>McLelland, J.M., Bickford, M.E., Hill, B.M., Clechenko, C.C., Valley, J.W., and Hamilton, M.A., 2004, Direct dating of Adirondack Massif anorthosite by U-Pb SHRIMP analysis of igneous zircon; implications for AMCG complexes: Geological Society of America Bulletin, v.116, no. 11-12, p.1299-1317, doi: <a href="http://dx.doi.org/10.1130/B25482.1" target="_blank">10.1130/B25482.1</a>.</p>
<ul><li>This article describes techniques used to more accurately date the Adirondack Massif anorthosite.The authors concluded that the massifs <span>constitute a single, composite anorthosite-mangerite-charnockite-granite (AMCG) suite intruded at ca. 1155 Ma. Although the rock suite is considered to be coeval, the authors conclude the rocks are not comagmatic.</span></li>
</ul><p>McLelland, J., Bickford, M.E., Spear, F., and Storm, L., 2002, Geology and geochronolgy of the eastern Adirondacks in <span>New England Intercollegiate Geological Conference, 94th, New York State Geological Association 74th: guidebook for field trips in New York and Vermont : Lake George, New York<br /></span></p>
<ul><li>This field trip guide provides for nine stops in the eastern Adirondacks. It also include some thin sections images and zircon images from sample rocks of the field trip stops.</li>
</ul><p>McLelland, J., Daly, J.S., and McLelland, J.M., 1996, The Grenville orogenic cycle (ca. 1350-1000 Ma); an Adirondack perspective: Tectonophysics, v.265, issue 1-2, p.1-28, doi: <a href="http://dx.doi.org/10.1016/S0040-1951(96)00144-8" target="_blank">10.1016/S0040-1951(96)00144-8</a>.</p>
<ul><li>This article provides a detailed geochronological account of the Grenville orogeny (ca. 1350-1000 Ma) with emphasis on the impact it had on the formation of the Adirondack Mountains.</li>
</ul><p>McLelland, J., Lewis, A., and Moore, L., 1994, Composition and petrogenesis of oxide-, apatite-rich gabbronorites associated with Proterozoic anorthosite massifs: examples from the Adirondack Mountains, New York: Contributions to Mineralogy and Petrology, v.116, p.225-238, doi: <a href="http://dx.doi.org/10.1007/BF00310702" target="_blank">10.1007/BF00310702</a>.</p>
<ul><li>This article investigates the occurence of oxide-, apatite-rich gabbronorites with anorthosite massifs of the Adirondacks. The authors describe a multilple-step process of plagioclase crystal fractionation that ultimately leads to high concentrations of P, Fe, and Ti.</li>
</ul><p>New York State Geological Survey<br /><a href="http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html">http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html<br /></a></p>
<ul><li>The NYS Geological Survey is a division of the New York State Museum system. This web page provides some details about the Adirondack Highlands and pictures of various minerals found in this region.</li>
</ul><p>Regan, S.P., Chiarenzelli, J.R., McLelland, J.M., and Cousens, B. L., 2011, Evidence for an enriched asthenospheric source for coronitic metagabbros in the Adirondack Highlands: Geosphere, v.7, issue 3, p.<span> 694-709, doi: <a href="http://dx.doi.org/10.1130/GES00629.1" target="_blank">10.1130/GES00629.1</a>.<br /></span></p>
<ul><li>This article describes the formation of coronitc metagabbros through tectonic processes involving the asthenosphere. Through geochemical and isotopic analyses, the authors provide a timeline of tectonic and petrologic events that supports an asthenospheric source for coronitic metagabbros.</li>
</ul>
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
Temporal Coverage
Temporal characteristics of the resource.
The Adirondack Mountains were formed approximately 1.1- 1.3 billion years ago during the Grenville Orogeny (Precambrian eon, Proterozic era).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Spatial Coverage
Spatial characteristics of the resource.
This rock suite was collected from the Adirondack Mountains located in the northeastern part of New York State.
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Identifier
An unambiguous reference to the resource within a given context
AD-21
Title
A name given to the resource
Fayalite-ferrohedenbergite-mesoperthite granite
Spatial Coverage
Spatial characteristics of the resource.
Adirondack Highlands-collected from road cuts 4.1 miles west of Cranberry Lake.
Temporal Coverage
Temporal characteristics of the resource.
Precambrian
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/7">Anorthosite-Charnockite and Metamorphic Suite-Adirondack Mountains, New York</a>
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Description
An account of the resource
This granite post-dates deformation and metamorphism. Silver got a U/Pb zircon age of 1125 Ma. This is a most unusual rock type. This rock has small quantities of fayalitic olivine and ferrohedenbergite that occur with mesoperthite and quartz. It also contains iron-rich orthopyroxene (Fe~90%).
Thin section shows feldspar with perthitic texture, quartz and olivine.
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
-
https://dev.geosciencecollections.milne-library.org/files/original/37cd1236d82cf5009bcba502f6cee0c4.JPG
0b1086ee48b7b9c537d515cfb6dd02ca
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Charnockite
https://dev.geosciencecollections.milne-library.org/files/original/9e91a0120c9d2fee043cdd5a1fd64e7e.jpg
d253cfc7268494637669003a65ad3d0b
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Charnockite-Thin section cross polarized light
Description
An account of the resource
Thin section cross polarized light
https://dev.geosciencecollections.milne-library.org/files/original/84946276817705de1d1a6c5653829810.jpg
5c8242ef5e5716134b11ceb572813ed2
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Charnockite-Thin section plane polarized light
Description
An account of the resource
Thin section plane polarized light
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(ADK) Anorthosite-Charnockite and Metamorphic Suite --
Adirondack Mountains, New York
Description
An account of the resource
The Adirondack Mountains of northern New York State are underlain by approximately 20,000 square miles of complexly deformed, high grade metamorphic rocks which are believed to represent a southern outlier of the much larger Grenville Province.The Adirondacks can be divided into the "Lowlands" and the "Highlands" . The Lowlands comprise the northwestern quarter of the belt and are characterized by amphibolite facies metamorphism. The Highlands appear to consist entirely of granulite facies rocks. All rocks in this suite have been collected from the Highlands and predominantly from the southern quarter of the Adirondacks.
This suite of rocks is designed to be representative of the Highlands in general. Therefore it includes both metasedimentary and metaigneous rocks. The latter are very common throughout the Adirondacks and contain the often-discussed anorthosite-charnockite suite of rocks. Almost all rocks in the Adirondack Highlands are strongly foliated. This is the result of intense polyphase deformation that has affected this area.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start here: <br /></strong>McLelland, J., and Selleck, B.W.,2011, Megacrystic Gore Mountain-type garnets in the Adirondack Highlands; age, origin, and tectonic implications:Geosphere, v.7, no. 5, p.1194-1208, doi: <a href="http://dx.doi.org/10.1130/GES00683.1" target="_blank">10.1130/GES00683.1</a>.<br /><ul><li>This article describes the formation of the megacrystic garnet amphibolites in the Gore Mountain section of the Adirondack Mountains. The authors conclude that three main factors influenced the garnet development: collapse of the Ottawan orogeny, intrusion of Lyon Mountain Granite, and fluid-related alteration at high temperature.</li>
</ul><p><strong>Additional resources:<br /></strong>McLelland, J.M., Bickford, M.E., Hill, B.M., Clechenko, C.C., Valley, J.W., and Hamilton, M.A., 2004, Direct dating of Adirondack Massif anorthosite by U-Pb SHRIMP analysis of igneous zircon; implications for AMCG complexes: Geological Society of America Bulletin, v.116, no. 11-12, p.1299-1317, doi: <a href="http://dx.doi.org/10.1130/B25482.1" target="_blank">10.1130/B25482.1</a>.</p>
<ul><li>This article describes techniques used to more accurately date the Adirondack Massif anorthosite.The authors concluded that the massifs <span>constitute a single, composite anorthosite-mangerite-charnockite-granite (AMCG) suite intruded at ca. 1155 Ma. Although the rock suite is considered to be coeval, the authors conclude the rocks are not comagmatic.</span></li>
</ul><p>McLelland, J., Bickford, M.E., Spear, F., and Storm, L., 2002, Geology and geochronolgy of the eastern Adirondacks in <span>New England Intercollegiate Geological Conference, 94th, New York State Geological Association 74th: guidebook for field trips in New York and Vermont : Lake George, New York<br /></span></p>
<ul><li>This field trip guide provides for nine stops in the eastern Adirondacks. It also include some thin sections images and zircon images from sample rocks of the field trip stops.</li>
</ul><p>McLelland, J., Daly, J.S., and McLelland, J.M., 1996, The Grenville orogenic cycle (ca. 1350-1000 Ma); an Adirondack perspective: Tectonophysics, v.265, issue 1-2, p.1-28, doi: <a href="http://dx.doi.org/10.1016/S0040-1951(96)00144-8" target="_blank">10.1016/S0040-1951(96)00144-8</a>.</p>
<ul><li>This article provides a detailed geochronological account of the Grenville orogeny (ca. 1350-1000 Ma) with emphasis on the impact it had on the formation of the Adirondack Mountains.</li>
</ul><p>McLelland, J., Lewis, A., and Moore, L., 1994, Composition and petrogenesis of oxide-, apatite-rich gabbronorites associated with Proterozoic anorthosite massifs: examples from the Adirondack Mountains, New York: Contributions to Mineralogy and Petrology, v.116, p.225-238, doi: <a href="http://dx.doi.org/10.1007/BF00310702" target="_blank">10.1007/BF00310702</a>.</p>
<ul><li>This article investigates the occurence of oxide-, apatite-rich gabbronorites with anorthosite massifs of the Adirondacks. The authors describe a multilple-step process of plagioclase crystal fractionation that ultimately leads to high concentrations of P, Fe, and Ti.</li>
</ul><p>New York State Geological Survey<br /><a href="http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html">http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html<br /></a></p>
<ul><li>The NYS Geological Survey is a division of the New York State Museum system. This web page provides some details about the Adirondack Highlands and pictures of various minerals found in this region.</li>
</ul><p>Regan, S.P., Chiarenzelli, J.R., McLelland, J.M., and Cousens, B. L., 2011, Evidence for an enriched asthenospheric source for coronitic metagabbros in the Adirondack Highlands: Geosphere, v.7, issue 3, p.<span> 694-709, doi: <a href="http://dx.doi.org/10.1130/GES00629.1" target="_blank">10.1130/GES00629.1</a>.<br /></span></p>
<ul><li>This article describes the formation of coronitc metagabbros through tectonic processes involving the asthenosphere. Through geochemical and isotopic analyses, the authors provide a timeline of tectonic and petrologic events that supports an asthenospheric source for coronitic metagabbros.</li>
</ul>
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
Temporal Coverage
Temporal characteristics of the resource.
The Adirondack Mountains were formed approximately 1.1- 1.3 billion years ago during the Grenville Orogeny (Precambrian eon, Proterozic era).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Spatial Coverage
Spatial characteristics of the resource.
This rock suite was collected from the Adirondack Mountains located in the northeastern part of New York State.
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Snowy Mountain Dome
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Identifier
An unambiguous reference to the resource within a given context
AD-22
Title
A name given to the resource
Charnockite
Spatial Coverage
Spatial characteristics of the resource.
Adirondack Highlands-collected from road cuts on NY Route 30 approximately 1 mile south of Beaver Creek or 6 miles south of Indian Lake.
Temporal Coverage
Temporal characteristics of the resource.
Precambrian
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a title="Anothosite-Charnockite and Metamorphic Suite-Adirondack Mountains, New York" href="http://geosciencecollections.milne-library.org/collections/show/7">Anorthosite-Charnockite and Metamorphic Suite-Adirondack Mountains, New York</a>
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
Description
An account of the resource
This particular charnockite has been described, with analyses by deWaard and Romey, "Petrogenetic Relationships in the Anorthosite-Charnockite Series of the Snowy Mountain Dome," in Anorthosite Volume, New York State Museum Memoir 18, p.307-315. In this article, the authors show that a gradational contact exists between the anorthosite and surrounding charnockitic rocks. This is interpreted as the result of a comagmatic history for the rocks in question. The charnockites contain occasional xenocrysts of andesine which are believed to have been plucked off of the already solidified anorthosite by the still molten charnockite. Hills and Isachsen (1975) have dated these rocks at 1173±14 Ma.
Thin section shows K-feldspar, quartz and clinopyroxene.
-
https://dev.geosciencecollections.milne-library.org/files/original/0b40766f1b6c75232ea7110c64c6482e.JPG
56adae428338fdc271d29e6d864b9b6e
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Woolen Mill gabbro
https://dev.geosciencecollections.milne-library.org/files/original/7cd9bf37fb7b3d52920e54740631485f.jpg
e0bfefdf8a7d4d934366e2eac529e3cb
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Woolen Mill gabbro-thin section cross polarized light
Description
An account of the resource
Thin section cross polarized light
https://dev.geosciencecollections.milne-library.org/files/original/06ac8935442148c483c61c643468d5b9.jpg
2f155b1e673a77004b12aad5006fd08b
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Woolen Mill gabbro-thin section plane polarized light
Alternative Title
An alternative name for the resource. The distinction between titles and alternative titles is application-specific.
Thin section plane polarized light
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(ADK) Anorthosite-Charnockite and Metamorphic Suite --
Adirondack Mountains, New York
Description
An account of the resource
The Adirondack Mountains of northern New York State are underlain by approximately 20,000 square miles of complexly deformed, high grade metamorphic rocks which are believed to represent a southern outlier of the much larger Grenville Province.The Adirondacks can be divided into the "Lowlands" and the "Highlands" . The Lowlands comprise the northwestern quarter of the belt and are characterized by amphibolite facies metamorphism. The Highlands appear to consist entirely of granulite facies rocks. All rocks in this suite have been collected from the Highlands and predominantly from the southern quarter of the Adirondacks.
This suite of rocks is designed to be representative of the Highlands in general. Therefore it includes both metasedimentary and metaigneous rocks. The latter are very common throughout the Adirondacks and contain the often-discussed anorthosite-charnockite suite of rocks. Almost all rocks in the Adirondack Highlands are strongly foliated. This is the result of intense polyphase deformation that has affected this area.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start here: <br /></strong>McLelland, J., and Selleck, B.W.,2011, Megacrystic Gore Mountain-type garnets in the Adirondack Highlands; age, origin, and tectonic implications:Geosphere, v.7, no. 5, p.1194-1208, doi: <a href="http://dx.doi.org/10.1130/GES00683.1" target="_blank">10.1130/GES00683.1</a>.<br /><ul><li>This article describes the formation of the megacrystic garnet amphibolites in the Gore Mountain section of the Adirondack Mountains. The authors conclude that three main factors influenced the garnet development: collapse of the Ottawan orogeny, intrusion of Lyon Mountain Granite, and fluid-related alteration at high temperature.</li>
</ul><p><strong>Additional resources:<br /></strong>McLelland, J.M., Bickford, M.E., Hill, B.M., Clechenko, C.C., Valley, J.W., and Hamilton, M.A., 2004, Direct dating of Adirondack Massif anorthosite by U-Pb SHRIMP analysis of igneous zircon; implications for AMCG complexes: Geological Society of America Bulletin, v.116, no. 11-12, p.1299-1317, doi: <a href="http://dx.doi.org/10.1130/B25482.1" target="_blank">10.1130/B25482.1</a>.</p>
<ul><li>This article describes techniques used to more accurately date the Adirondack Massif anorthosite.The authors concluded that the massifs <span>constitute a single, composite anorthosite-mangerite-charnockite-granite (AMCG) suite intruded at ca. 1155 Ma. Although the rock suite is considered to be coeval, the authors conclude the rocks are not comagmatic.</span></li>
</ul><p>McLelland, J., Bickford, M.E., Spear, F., and Storm, L., 2002, Geology and geochronolgy of the eastern Adirondacks in <span>New England Intercollegiate Geological Conference, 94th, New York State Geological Association 74th: guidebook for field trips in New York and Vermont : Lake George, New York<br /></span></p>
<ul><li>This field trip guide provides for nine stops in the eastern Adirondacks. It also include some thin sections images and zircon images from sample rocks of the field trip stops.</li>
</ul><p>McLelland, J., Daly, J.S., and McLelland, J.M., 1996, The Grenville orogenic cycle (ca. 1350-1000 Ma); an Adirondack perspective: Tectonophysics, v.265, issue 1-2, p.1-28, doi: <a href="http://dx.doi.org/10.1016/S0040-1951(96)00144-8" target="_blank">10.1016/S0040-1951(96)00144-8</a>.</p>
<ul><li>This article provides a detailed geochronological account of the Grenville orogeny (ca. 1350-1000 Ma) with emphasis on the impact it had on the formation of the Adirondack Mountains.</li>
</ul><p>McLelland, J., Lewis, A., and Moore, L., 1994, Composition and petrogenesis of oxide-, apatite-rich gabbronorites associated with Proterozoic anorthosite massifs: examples from the Adirondack Mountains, New York: Contributions to Mineralogy and Petrology, v.116, p.225-238, doi: <a href="http://dx.doi.org/10.1007/BF00310702" target="_blank">10.1007/BF00310702</a>.</p>
<ul><li>This article investigates the occurence of oxide-, apatite-rich gabbronorites with anorthosite massifs of the Adirondacks. The authors describe a multilple-step process of plagioclase crystal fractionation that ultimately leads to high concentrations of P, Fe, and Ti.</li>
</ul><p>New York State Geological Survey<br /><a href="http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html">http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html<br /></a></p>
<ul><li>The NYS Geological Survey is a division of the New York State Museum system. This web page provides some details about the Adirondack Highlands and pictures of various minerals found in this region.</li>
</ul><p>Regan, S.P., Chiarenzelli, J.R., McLelland, J.M., and Cousens, B. L., 2011, Evidence for an enriched asthenospheric source for coronitic metagabbros in the Adirondack Highlands: Geosphere, v.7, issue 3, p.<span> 694-709, doi: <a href="http://dx.doi.org/10.1130/GES00629.1" target="_blank">10.1130/GES00629.1</a>.<br /></span></p>
<ul><li>This article describes the formation of coronitc metagabbros through tectonic processes involving the asthenosphere. Through geochemical and isotopic analyses, the authors provide a timeline of tectonic and petrologic events that supports an asthenospheric source for coronitic metagabbros.</li>
</ul>
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
Temporal Coverage
Temporal characteristics of the resource.
The Adirondack Mountains were formed approximately 1.1- 1.3 billion years ago during the Grenville Orogeny (Precambrian eon, Proterozic era).
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Spatial Coverage
Spatial characteristics of the resource.
This rock suite was collected from the Adirondack Mountains located in the northeastern part of New York State.
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Identifier
An unambiguous reference to the resource within a given context
AD-23
Title
A name given to the resource
Woolen Mill gabbro
Spatial Coverage
Spatial characteristics of the resource.
Adirondack Highlands-collected from a road cut on NY Route 9N, i mile west of Elizabethtown.
Temporal Coverage
Temporal characteristics of the resource.
Precambrian
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://geosciencecollections.milne-library.org/collections/show/7">Anorthosite-Charnockite and Metamorphic Suite-Adirondack Mountains, New York</a>
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Description
An account of the resource
This specimen is representative of the pyroxene-plagioclase granulites that form from gabbros in the Adirondacks. This famous locality has been discussed, with analyses, by Buddington, 1939, Analysis 64L Table 15, and also in deWaard's 1965 type locality for the almandine-clinopyroxene subfacies of the granulite facies. The mineralogy is garnet-oligoclase-clinopyroxene-opaques. The texture is granoblastic. The original igneous texture and mineralogy have been totally replaced, at least locally, by two pyroxenes and plagioclase.
Thin section shows garnet, plagioclase and clinopyroxene.
Date
A point or period of time associated with an event in the lifecycle of the resource
1980
-
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Omeka Image File
The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
Width
1936
Height
2592
Bit Depth
8
Channels
3
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PPC) Franciscan Assemblage Suite -- Panoche Pass, California
Description
An account of the resource
This collection consists of 20 samples taken from Panoche Pass, California. These samples are representative of rocks that can be found in the Franciscan assemblage throughout California. These rocks made up the accretionary wedge during the Nevadan Orogeny and were accreted onto the west coast of North America. Rocks in this suite range from seafloor sediments all the way to eclogite facies metamorphics.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Chert with dark riebekite
Description
An account of the resource
Chert with small dark riebeckite
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/189">Panoche Pass, California Western Minerals Supplemental Materials</a>
Identifier
An unambiguous reference to the resource within a given context
PPC-1
Spatial Coverage
Spatial characteristics of the resource.
Panoche Pass, California
Temporal Coverage
Temporal characteristics of the resource.
Mid to Late Jurassic
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
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Omeka Image File
The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
Width
1935
Height
2592
Bit Depth
8
Channels
3
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PPC) Franciscan Assemblage Suite -- Panoche Pass, California
Description
An account of the resource
This collection consists of 20 samples taken from Panoche Pass, California. These samples are representative of rocks that can be found in the Franciscan assemblage throughout California. These rocks made up the accretionary wedge during the Nevadan Orogeny and were accreted onto the west coast of North America. Rocks in this suite range from seafloor sediments all the way to eclogite facies metamorphics.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Blueschist
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="ʺhttp://www.geosciencecollections.milne-library.org/items/show/162ʺ">Panoche Pass, California Western Minerals Supplemental Materials</a>
Identifier
An unambiguous reference to the resource within a given context
PPC-2
Spatial Coverage
Spatial characteristics of the resource.
Panoche Pass, California
Temporal Coverage
Temporal characteristics of the resource.
Mid to Late Jurassic
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
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Omeka Image File
The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
Width
1935
Height
2592
Bit Depth
8
Channels
3
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PPC) Franciscan Assemblage Suite -- Panoche Pass, California
Description
An account of the resource
This collection consists of 20 samples taken from Panoche Pass, California. These samples are representative of rocks that can be found in the Franciscan assemblage throughout California. These rocks made up the accretionary wedge during the Nevadan Orogeny and were accreted onto the west coast of North America. Rocks in this suite range from seafloor sediments all the way to eclogite facies metamorphics.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Jadeite-bearing rock
Description
An account of the resource
green
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="ʺhttp://www.geosciencecollections.milne-library.org/items/show/162ʺ">Panoche Pass, California Western Minerals Supplemental Materials</a>
Identifier
An unambiguous reference to the resource within a given context
PPC-3
Spatial Coverage
Spatial characteristics of the resource.
Panoche Pass, California
Temporal Coverage
Temporal characteristics of the resource.
Mid to Late Jurassic
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://dev.geosciencecollections.milne-library.org/files/original/b76234f5e8a7caaf09dc65e4fa310d2c.jpg
f7430636de195de29a8a94b229710d7b
Omeka Image File
The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
Width
1935
Height
2592
Bit Depth
8
Channels
3
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PPC) Franciscan Assemblage Suite -- Panoche Pass, California
Description
An account of the resource
This collection consists of 20 samples taken from Panoche Pass, California. These samples are representative of rocks that can be found in the Franciscan assemblage throughout California. These rocks made up the accretionary wedge during the Nevadan Orogeny and were accreted onto the west coast of North America. Rocks in this suite range from seafloor sediments all the way to eclogite facies metamorphics.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Blueschist
Description
An account of the resource
Blueschist from an outcrop in a stream bed
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="ʺhttp://www.geosciencecollections.milne-library.org/items/show/162ʺ">Panoche Pass, California Western Minerals Supplemental Materials</a>
Identifier
An unambiguous reference to the resource within a given context
PPC-4
Spatial Coverage
Spatial characteristics of the resource.
Panoche Pass, California
Temporal Coverage
Temporal characteristics of the resource.
Mid to Late Jurassic
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
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Omeka Image File
The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
Width
1935
Height
2592
Bit Depth
8
Channels
3
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PPC) Franciscan Assemblage Suite -- Panoche Pass, California
Description
An account of the resource
This collection consists of 20 samples taken from Panoche Pass, California. These samples are representative of rocks that can be found in the Franciscan assemblage throughout California. These rocks made up the accretionary wedge during the Nevadan Orogeny and were accreted onto the west coast of North America. Rocks in this suite range from seafloor sediments all the way to eclogite facies metamorphics.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Hornblendite
Description
An account of the resource
Coarse-grained hornblendite (some specimens have a few garnets)
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="ʺhttp://www.geosciencecollections.milne-library.org/items/show/162ʺ">Panoche Pass, California Western Minerals Supplemental Materials</a>
Identifier
An unambiguous reference to the resource within a given context
PPC-5
Spatial Coverage
Spatial characteristics of the resource.
Panoche Pass, California
Temporal Coverage
Temporal characteristics of the resource.
Mid to Late Jurassic
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
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451147f2d156af11d11cad7f4071781f
Omeka Image File
The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
Width
1935
Height
2592
Bit Depth
8
Channels
3
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PPC) Franciscan Assemblage Suite -- Panoche Pass, California
Description
An account of the resource
This collection consists of 20 samples taken from Panoche Pass, California. These samples are representative of rocks that can be found in the Franciscan assemblage throughout California. These rocks made up the accretionary wedge during the Nevadan Orogeny and were accreted onto the west coast of North America. Rocks in this suite range from seafloor sediments all the way to eclogite facies metamorphics.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Greywacke and Chert
Description
An account of the resource
Thin-bedded greywacke and chert.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="ʺhttp://www.geosciencecollections.milne-library.org/items/show/162ʺ">Panoche Pass, California Western Minerals Supplemental Materials</a>
Identifier
An unambiguous reference to the resource within a given context
PPC-6
Spatial Coverage
Spatial characteristics of the resource.
Panoche Pass, California
Temporal Coverage
Temporal characteristics of the resource.
Mid to Late Jurassic
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
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edbc62274926517138076edaf1c6b63e
Omeka Image File
The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
Width
1936
Height
2592
Bit Depth
8
Channels
3
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PPC) Franciscan Assemblage Suite -- Panoche Pass, California
Description
An account of the resource
This collection consists of 20 samples taken from Panoche Pass, California. These samples are representative of rocks that can be found in the Franciscan assemblage throughout California. These rocks made up the accretionary wedge during the Nevadan Orogeny and were accreted onto the west coast of North America. Rocks in this suite range from seafloor sediments all the way to eclogite facies metamorphics.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Reddish Chert and Shale
Description
An account of the resource
Reddish chert and shale
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="ʺhttp://www.geosciencecollections.milne-library.org/items/show/162ʺ">Panoche Pass, California Western Minerals Supplemental Materials</a>
Identifier
An unambiguous reference to the resource within a given context
PPC-7
Spatial Coverage
Spatial characteristics of the resource.
Panoche Pass, California
Temporal Coverage
Temporal characteristics of the resource.
Mid to Late Jurassic
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
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Omeka Image File
The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
Width
1935
Height
2592
Bit Depth
8
Channels
3
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PPC) Franciscan Assemblage Suite -- Panoche Pass, California
Description
An account of the resource
This collection consists of 20 samples taken from Panoche Pass, California. These samples are representative of rocks that can be found in the Franciscan assemblage throughout California. These rocks made up the accretionary wedge during the Nevadan Orogeny and were accreted onto the west coast of North America. Rocks in this suite range from seafloor sediments all the way to eclogite facies metamorphics.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Albite Greywacke
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="ʺhttp://www.geosciencecollections.milne-library.org/items/show/162ʺ">Panoche Pass, California Western Minerals Supplemental Materials</a>
Identifier
An unambiguous reference to the resource within a given context
PPC-8
Spatial Coverage
Spatial characteristics of the resource.
Panoche Pass, California
Temporal Coverage
Temporal characteristics of the resource.
Mid to Late Jurassic
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
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Omeka Image File
The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
Width
1935
Height
2592
Bit Depth
8
Channels
3
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PPC) Franciscan Assemblage Suite -- Panoche Pass, California
Description
An account of the resource
This collection consists of 20 samples taken from Panoche Pass, California. These samples are representative of rocks that can be found in the Franciscan assemblage throughout California. These rocks made up the accretionary wedge during the Nevadan Orogeny and were accreted onto the west coast of North America. Rocks in this suite range from seafloor sediments all the way to eclogite facies metamorphics.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Greywacke
Description
An account of the resource
Slightly metamorphosed greywacke
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="ʺhttp://www.geosciencecollections.milne-library.org/items/show/162ʺ">Panoche Pass, California Western Minerals Supplemental Materials</a>
Identifier
An unambiguous reference to the resource within a given context
PPC-9
Spatial Coverage
Spatial characteristics of the resource.
Panoche Pass, California
Temporal Coverage
Temporal characteristics of the resource.
Mid to Late Jurassic
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.