71 20 1651 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 (BKM) Belknap Mountains Ring Complex -- White Mountains, New Hampshire 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 BKM-3 Title A name given to the resource Quartz syenite dike Spatial Coverage Spatial characteristics of the resource. Alton Bay, New Hampshire Accrual Periodicity The frequency with which items are added to a collection. 1980 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/files/original/df566258e339655610e57ce52cf18970.pdf">BKM Rock Suite</a> Description An account of the resource contact with wall rock is sharp and with very thin, chilled margin 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/f3cd5ef6b33efe5d28b3abfda3a9a0e6.JPG 7c83e4888b0e8f2c477071b8934fb365 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 Quartz-microcline-diopsite gneiss https://dev.geosciencecollections.milne-library.org/files/original/b4b6f8f6169e40f388c92cebe541cd52.jpg ac3ba9a46bedb0a6fcecada0d79ca8b6 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 Quartz-microcline-diopsite gneiss-thin section cross polarized light https://dev.geosciencecollections.milne-library.org/files/original/9c32374032a177b6785525de72afc37c.jpg 6cdccbb01b41d1cd8b1b6cd38594c9b4 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 Quartz-microcline-diopsite 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. Start here:Â McLelland, J., and Selleck, B.W.,2011,Â Megacrystic Gore Mountain-type garnets in the Adirondack Highlands; age, origin, and tectonic implications:Geosphere, v.7, no. 5, p.1194-1208, doi:Â <a href="http://dx.doi.org/10.1130/GES00683.1" target="_blank">10.1130/GES00683.1</a>. <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>Additional resources: McLelland, J.M., Bickford, M.E., Hill, B.M., Clechenko, C.C., Valley, J.W., and Hamilton, M.A., 2004,Â Direct dating of Adirondack Massif anorthosite by U-Pb SHRIMP analysis of igneous zircon; implications for AMCG complexes:Â Geological Society of America Bulletin, v.116, no. 11-12, p.1299-1317, doi:Â <a href="http://dx.doi.org/10.1130/B25482.1" target="_blank">10.1130/B25482.1</a>. <ul><li>This article describes techniques used to more accurately date the Adirondack Massif anorthosite.The authors concluded that the massifsÂ 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.</li> </ul>McLelland, J., Bickford, M.E., Spear, F., and Storm, L., 2002, Geology and geochronolgy of the eastern Adirondacks inÂ 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 <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>McLelland, J., Daly, J.S., and McLelland, J.M., 1996,Â 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>. <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>McLelland, J., Lewis, A., and Moore, L., 1994,Â 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:Â <a href="http://dx.doi.org/10.1007/BF00310702" target="_blank">10.1007/BF00310702</a>. <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>New York State Geological Survey <a href="http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html">http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html </a> <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>Regan, S.P., Chiarenzelli, J.R., McLelland,Â J.M., and Cousens, B. L., 2011,Â Evidence for an enriched asthenospheric source for coronitic metagabbros in the Adirondack Highlands: Geosphere, v.7, issue 3, p.Â 694-709, doi:Â <a href="http://dx.doi.org/10.1130/GES00629.1" target="_blank">10.1130/GES00629.1</a>. <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-15 Title A name given to the resource Quartz-microcline-diopsite gneiss Spatial Coverage Spatial characteristics of the resource. Adirondack Highlands-collected on NY Route 30 from a road cut approximately just west of the parking area along the north shore of Mason Lake (Indian Lake 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. 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 specimen displays an unusual and distinctive lithology that occurs primarily in lower, marble-rich units (for example, the Cedar River Formation). Thin section shows quartz, K-feldspar and clinopyroxene. 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 (WCM) Acadian Regional Metamorphism Suite -- Massachusetts 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 WCM-2 Title A name given to the resource Quartz-orthoclase-garnet-biotite-sillimanite-graphite-ilmenite-pyrrhotite schist Spatial Coverage Spatial characteristics of the resource. Brookfield, Massachusetts Accrual Periodicity The frequency with which items are added to a collection. Fall 1982 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/files/original/ae92a128aaff3fe9bcd2bd7a2fdfe923.pdf">WCM Rock Suite</a> Description An account of the resource orthoclase is concentrated in watery clear megacrysts with crushed borders Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. 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 (WCM) Acadian Regional Metamorphism Suite -- Massachusetts Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Partridge 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 WCM-6 Title A name given to the resource Quartz-orthoclase-garnet-biotite-sillimanite-graphite-ilmenite-pyrrhotite schist Spatial Coverage Spatial characteristics of the resource. Ware, Massachusetts Temporal Coverage Temporal characteristics of the resource. Middle Ordovician Accrual Periodicity The frequency with which items are added to a collection. Fall 1982 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/files/original/ae92a128aaff3fe9bcd2bd7a2fdfe923.pdf">WCM Rock Suite</a> Description An account of the resource high-grade metamorphism 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/22de553fea23395b7ffe2c8fca337c27.pdf 1ca739b41d7f955fcb8d754b089d26f6 https://dev.geosciencecollections.milne-library.org/files/original/87ed33dc965634be619006d36b244ae7.JPG 4165d796609592b55be5b867c687f2b2 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 800 Height 600 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 (TMJ) Quartz-rich Metamorphic Suite -- Tanzawa Mountains, Kanto, Japan Description An account of the resource The Tanzawa Mountains in Japan were created in an arc-arc collision, when the Izu-Bonin-Mariana Arc was subducted beneath the Honshu Arc. This eventually accreted into the Tanzawa Mountains. The samples in this collection were found in and around the Tanzawa Mountains. The suite includes hornfels, amphibolites, quartz diorite, granophyres, and other basaltic rocks. The samples range from fine to coarse grained. An interesting feature found on many of the samples was a flow-like swirl of minerals in the thin section, visible in XPL. The quartz diorite samples had crystalline, powdery substances on them, which were analyzed using a Scanning Electron Microscope (SEM). The chemical compositions of the mentioned powdery substances were calcium, aluminum, silicon, and oxygen. 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. Start here: Kawate, S., and Makoto, A., 1998, Petrogenesis of the Tanzawa plutonic complex, central Japan; exposed felsic middle crust of the Izu-Bonin-Mariana Arc: Island Arc, v. 7, p. 342-358, link: http://dx.doi.org/10.1111/j.1440-1738.1998.00194.x. <ul><li>This paper explains the chemical variation and high SiO2Â percentage of rocks within Tanzawa region, and describes in some depth the tectonic events that uplifted the Tanzawa Mountains. Â </li> </ul>Additional resources: Kitamura, K., Ishikawa, M., and Arima, M., 2003, Petrological model of the northern Izu-Bonin-Mariana Arc crust; constraints from high-pressure measurements of elastic wave velocities of the Tanzawa plutonic rocks, central Japan: Tectonophysics, v. 371, p.213-221,Â link:Â http://dx.doi.org/10.1016/S0040-1951(03)00229-4 <ul><li> This paper researchs the variations in acoustic impedance between different hornblende-gabbroic rocks from Tanzawa, Japan.Â </li> </ul>Mikami, K., 1953, Metamorphic rocks in the southeastern margin of the Tanzawa quartz-diorite mass: Science Reports of Yokohama National University, v. 2, p. 34-49 <ul><li>This paper studies the chemical analysis of amphibolites resulting from contact metamorphism of the quartz-diorite mass in the Tanzawa Mountains.</li> </ul>Tani, K., Dunkley, D. J., Kimura, J., Wysoczanski, R.J., Yamada, K., and Tatsumi, Y.,2010,Â Syncollisional rapid granitic magma formation in an arc-arc collision zone: Evidence from the Tanzawa plutonic complex, Japan:Â Geology [Boulder], v. 38, p.215-218,Â link:Â http://dx.doi.org/10.1130/G30526.1 <ul><li> This paper discusses the collison that exposed the gabbroic rocks of the Tanzawa plutonic complex, and overall gives the reader an in-depth sturctural history of the Tanzawa Mountains.Â </li> </ul>Yoshimura, T., 1997, Ca-Al silicates in low-grade metavolcanic rocks from southern Tanzawa Mountains, Central Japan: Journal of Mineralogy Petrology and Economic Geology, Â v. 92, p. 363-378, link: http://dx.doi.org/10.2465/ganko.92.363. <ul><li> This paper explains prevalence of greenschist facies within the Tanzawa Mountain region, and gives the mineral composition of rocks from southern region of Tanzawa Mountains. </li> </ul>Â Â Â Spatial Coverage Spatial characteristics of the resource. The samples were found in the Tanzawa Mountains of Kanto, Japan. Temporal Coverage Temporal characteristics of the resource. The Tanzawa Mountains were formed during the late Pliocene. Document A resource containing textual data. Note that facsimiles or images of texts are still of the genre text. 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 Quartz-rich Metamorphic Suite--Tanzawa Mountains, Kanto Japan Western Minerals Supplementary Information Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. TMJ Description An account of the resource Image is of the North Side of the Tanzawa Mountains (Wikipedia) Has Format A related resource that is substantially the same as the pre-existing described resource, but in another format. PDF Has Part A related resource that is included either physically or logically in the described resource. <a href="http://www.geosciencecollections.milne-library.org/items/browse?search=&advanced%5B0%5D%5Belement_id%5D=&advanced%5B0%5D%5Btype%5D=&advanced%5B0%5D%5Bterms%5D=&range=&public=&featured=&collection=10&type=15&user=&tags=&geolocation-address=&geolocation-latitude=&geolocation-longitude=&geolocation-radius=10&geolocation-radius=10&exhibit=&submit_search=Search+%E2%86%92">Tanzawa Mountains--Metamorphic Suite, Â Japan</a> Identifier An unambiguous reference to the resource within a given context TMJ-suite https://dev.geosciencecollections.milne-library.org/files/original/182aaf714d4454c8b825a2d627f36670.JPG 5fe5fe345302c85818440bd4b27c372e 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 Quartzite https://dev.geosciencecollections.milne-library.org/files/original/26d2717ac8902747f023cda5878f3450.jpg 153c82ea41ba2026f1589ec123f80da1 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 Quartzite-thin section cross polarized light https://dev.geosciencecollections.milne-library.org/files/original/95cc536e821ed6b1c0128320c0cb69a7.jpg 6dd4dd22771e9d7ecd68b2c1e24123dc 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 Quartzite-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. Start here:Â McLelland, J., and Selleck, B.W.,2011,Â Megacrystic Gore Mountain-type garnets in the Adirondack Highlands; age, origin, and tectonic implications:Geosphere, v.7, no. 5, p.1194-1208, doi:Â <a href="http://dx.doi.org/10.1130/GES00683.1" target="_blank">10.1130/GES00683.1</a>. <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>Additional resources: McLelland, J.M., Bickford, M.E., Hill, B.M., Clechenko, C.C., Valley, J.W., and Hamilton, M.A., 2004,Â Direct dating of Adirondack Massif anorthosite by U-Pb SHRIMP analysis of igneous zircon; implications for AMCG complexes:Â Geological Society of America Bulletin, v.116, no. 11-12, p.1299-1317, doi:Â <a href="http://dx.doi.org/10.1130/B25482.1" target="_blank">10.1130/B25482.1</a>. <ul><li>This article describes techniques used to more accurately date the Adirondack Massif anorthosite.The authors concluded that the massifsÂ 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.</li> </ul>McLelland, J., Bickford, M.E., Spear, F., and Storm, L., 2002, Geology and geochronolgy of the eastern Adirondacks inÂ 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 <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>McLelland, J., Daly, J.S., and McLelland, J.M., 1996,Â 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>. <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>McLelland, J., Lewis, A., and Moore, L., 1994,Â 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:Â <a href="http://dx.doi.org/10.1007/BF00310702" target="_blank">10.1007/BF00310702</a>. <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>New York State Geological Survey <a href="http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html">http://www.nysm.nysed.gov/nysgs/nygeology/mineralogy/adirondacks/index.html </a> <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>Regan, S.P., Chiarenzelli, J.R., McLelland,Â J.M., and Cousens, B. L., 2011,Â Evidence for an enriched asthenospheric source for coronitic metagabbros in the Adirondack Highlands: Geosphere, v.7, issue 3, p.Â 694-709, doi:Â <a href="http://dx.doi.org/10.1130/GES00629.1" target="_blank">10.1130/GES00629.1</a>. <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 Irving Pond 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-1 Title A name given to the resource Quartzite Spatial Coverage Spatial characteristics of the resource. Adirondack Highlands-collected from a road cut on NY Routes 10 & 29A, Â½ mile north of the Nick Stoner Inn and 1Â¼ miles south of the Canada Lake Store. 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 typical of the 5-10 foot thick coarse grained layers of glassy quartzites that comprise this formation. In most instances the quartzites are about 90% quartz. Feldspar and garnet are encountered locally. This is presumed to be the uppermost stratigraphic unit in the Adirondacks and typical of Adirondack quartzite generally. Thin section shows primarily quartz with a minor amount of 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/f05a8651bc19fbf711a34f2a176ddfb1.JPG 8121e6ce0af723edf437fdd686cbced0 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 DUCO-10 hand sample of quartzite https://dev.geosciencecollections.milne-library.org/files/original/805ecf6a88300839eb64e310c1869888.png fe5320668d17549ca1f4b7c6a069b789 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 ppl / xpl 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 (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence 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 DUCO-10 Title A name given to the resource Quartzite Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals 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/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource Metamorphised sandstone with a gray, glassy appearance. From the Paughquag quartzite, a late Cambrian formation. The basal Cambrian quartzite rests on pre-Cambrian gneisses. The thin section shows quartz and plag with some biotite and grain boundaries. Many fluid inclusions noticeable. This rock has a different protolith than the many pelitic schists around it. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. 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 (LT) Littleton Formation Metamorphic Suite -- New Hampshire 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 LT-17 Title A name given to the resource Quartzose Mica schist Spatial Coverage Spatial characteristics of the resource. 3/4 mile E. of E. Lempster, NH. Central Lovewell Mountain quadrangle map, NH 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/files/original/ab40af99a6356f6acf4cf7553cb67b6a.pdf">LT Rock Suite</a> Description An account of the resource This foliated sample is dominated by micas and quartz. It is a sample from the Hubbard Hill member. 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 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 (LT) Littleton Formation Metamorphic Suite -- New Hampshire Rock A physical material with a mineral composition. 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 LT-20 Title A name given to the resource Quartzose Mica Schist Spatial Coverage Spatial characteristics of the resource. Hwy 10; 1/2 mile S. of Marlow Junction, NH. Central Lovewell Mountain quadrangle map, NH 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/files/original/ab40af99a6356f6acf4cf7553cb67b6a.pdf">LT Rock Suite</a> Description An account of the resource Mica-based schist containing significant quartz 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 https://dev.geosciencecollections.milne-library.org/files/original/b1fa362344c5ea0a4b44eee112246874.jpg 28dcf01614ed91fcc1a770a45de1cd0c 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. 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For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource (FR) Sedimentary and Igneous Franciscan Assemblage Suite -- California Description An account of the resource This 14 sample collection primarily consists of clastic sedimentary rocks with metamorphic and igneous components, representing a Franciscan Assemblage. This assemblage is indicative of a subduction zone along the California coast. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. - Collection was supervised by Dr. Frederick C. Marshall, Assistant Professor of Geology at Principia College. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start here: Ernst, W.G., 2015, Franciscan geologic history constrained by tectonic/olistostromal high-grade metamafic blocks in the iconic California Mesozoic-Cenozoic accretionary complex: American Mineralogist, v. 100, p. 6-13.Â <a href="http://dx.doi.org/10.2138/am-2015-4850" target="_blank">doi:Â 10.2138/am-2015-4850</a> <ul><li>This source supplies useful information on the low temperature, high pressure environment in which these rocks formed.Â </li> </ul>Additional resources: Barnes, J., Eldam, R., Lee, C.T., Errico, J., Loewy, S., and Cisneros, M., 2013, Petrogenesis of serpentinites from the Franciscan Complex, western California, USA: Lithos, v. 178, p. 143-157.Â <a class="S_C_ddDoi" href="http://dx.doi.org/10.1016/j.lithos.2012.12.018" target="_blank">doi:10.1016/j.lithos.2012.12.018</a> <ul><li>Describes the petrogenesis of serpentine as seen in one of the items in the collection (Fr-4).</li> </ul>Cooper, F., Platt, J., and Anczkiewicz, R., 2011, Constraints on early Franciscan subduction rates from 2-D thermal modeling: Earth and Planetary Science Letters, v. 312, p. 69-79. doi:<a href="http://dx.doi.org/10.1016/j.epsl.2011.09.051">10.1016/j.epsl.2011.09.051</a> <ul><li>This paper suggests that the rate of subduction in this area may have been five times lower than previous studies have found.</li> </ul>Ghatak, A., Basu, A., and Wakabayashi, J., 2013, Implications of Franciscan Complex graywacke geochemistry for sediment transport, provenance determination, burial-exposure duration, and fluid exchange with cosubducted metabasites: Tectonics, v. 32, p. 1480-1492. doi:Â <a href="http://dx.doi.org/10.1002/tect.20078">10.1002/tect.20078</a> <ul><li>This article states that the europium anomalies of the greywacke samples suggest provenance from the Sierra Nevada batholith.</li> </ul>Langenheim, V., Jachens, R., Wentworth, C., and McLaughlin, R., 2013, Previously unrecognized regional structure of the Coastal Belt of the Franciscan Complex, northern California, revealed by magnetic data: Geosphere, v. 9, p. 1514-1529. doi:Â <a href="http://dx.doi.org/10.1130/GES00942.1">10.1130/GES00942.1</a> <ul><li>Using magnetic data, this article provides an overview of the regional structure of the Franciscan Complex.</li> </ul> Spatial Coverage Spatial characteristics of the resource. These specimens were collected across Marin County and the San Francisco Peninsula. Temporal Coverage Temporal characteristics of the resource. The specimens are Mesozoic in age. 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 Radiolarian Chert and Shale Description An account of the resource More orange in color that FR-3 (Red Chert). Radiolaria fossils are visible in thin section amongst red-orange martix. (Thin Section FOV: 1.28) Date A point or period of time associated with an event in the lifecycle of the resource Not given 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/collections/show/12">Stratigraphic Suite- Franciscan Rocks, California</a> Identifier An unambiguous reference to the resource within a given context FR-11 Spatial Coverage Spatial characteristics of the resource. Roadcut on west side of north Twin Peaks. Temporal Coverage Temporal characteristics of the resource. Mesozoic Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. 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 2nd Floor ISC Fossil Display Cases Fossil Number of Items 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 Ray-finned fish Identifier An unambiguous reference to the resource within a given context DC14-2S-1 Description An account of the resource Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Family: Genus: Species: Source A related resource from which the described resource is derived 2nd floor hallway, display case 14 Temporal Coverage Temporal characteristics of the resource. Eocene Spatial Coverage Spatial characteristics of the resource. Wyoming Subject The topic of the resource original material https://dev.geosciencecollections.milne-library.org/files/original/c5839c77b93a105b81928b2cee605a44.JPG 469b0c9b18f8fef184aeb57bb16c5e9e 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. 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Title A name given to the resource (FR) Sedimentary and Igneous Franciscan Assemblage Suite -- California Description An account of the resource This 14 sample collection primarily consists of clastic sedimentary rocks with metamorphic and igneous components, representing a Franciscan Assemblage. This assemblage is indicative of a subduction zone along the California coast. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. - Collection was supervised by Dr. Frederick C. Marshall, Assistant Professor of Geology at Principia College. References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start here: Ernst, W.G., 2015, Franciscan geologic history constrained by tectonic/olistostromal high-grade metamafic blocks in the iconic California Mesozoic-Cenozoic accretionary complex: American Mineralogist, v. 100, p. 6-13.Â <a href="http://dx.doi.org/10.2138/am-2015-4850" target="_blank">doi:Â 10.2138/am-2015-4850</a> <ul><li>This source supplies useful information on the low temperature, high pressure environment in which these rocks formed.Â </li> </ul>Additional resources: Barnes, J., Eldam, R., Lee, C.T., Errico, J., Loewy, S., and Cisneros, M., 2013, Petrogenesis of serpentinites from the Franciscan Complex, western California, USA: Lithos, v. 178, p. 143-157.Â <a class="S_C_ddDoi" href="http://dx.doi.org/10.1016/j.lithos.2012.12.018" target="_blank">doi:10.1016/j.lithos.2012.12.018</a> <ul><li>Describes the petrogenesis of serpentine as seen in one of the items in the collection (Fr-4).</li> </ul>Cooper, F., Platt, J., and Anczkiewicz, R., 2011, Constraints on early Franciscan subduction rates from 2-D thermal modeling: Earth and Planetary Science Letters, v. 312, p. 69-79. doi:<a href="http://dx.doi.org/10.1016/j.epsl.2011.09.051">10.1016/j.epsl.2011.09.051</a> <ul><li>This paper suggests that the rate of subduction in this area may have been five times lower than previous studies have found.</li> </ul>Ghatak, A., Basu, A., and Wakabayashi, J., 2013, Implications of Franciscan Complex graywacke geochemistry for sediment transport, provenance determination, burial-exposure duration, and fluid exchange with cosubducted metabasites: Tectonics, v. 32, p. 1480-1492. doi:Â <a href="http://dx.doi.org/10.1002/tect.20078">10.1002/tect.20078</a> <ul><li>This article states that the europium anomalies of the greywacke samples suggest provenance from the Sierra Nevada batholith.</li> </ul>Langenheim, V., Jachens, R., Wentworth, C., and McLaughlin, R., 2013, Previously unrecognized regional structure of the Coastal Belt of the Franciscan Complex, northern California, revealed by magnetic data: Geosphere, v. 9, p. 1514-1529. doi:Â <a href="http://dx.doi.org/10.1130/GES00942.1">10.1130/GES00942.1</a> <ul><li>Using magnetic data, this article provides an overview of the regional structure of the Franciscan Complex.</li> </ul> Spatial Coverage Spatial characteristics of the resource. These specimens were collected across Marin County and the San Francisco Peninsula. Temporal Coverage Temporal characteristics of the resource. The specimens are Mesozoic in age. 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 Red Chert Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Jasper Description An account of the resource Red jasper matrix with interescting veins of while quartz. Prominent physcial weathering, brittle areas fall apart to the touch. Several prominent fractures run through the rock, contributing to the weakened structure. Most fresh surfaces are reddish brown while weathered surfaces are brown to orange. (FOV: 0.64mm) Date A point or period of time associated with an event in the lifecycle of the resource Not given 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/collections/show/12">Stratigraphic Suite- Franciscan Rocks, California</a> Identifier An unambiguous reference to the resource within a given context FR-3 Spatial Coverage Spatial characteristics of the resource. Roadcut on northwest side of Sausalito road east of US 101 and just north of Golden Gate Bridge. It is the first outcrop northeast of the Fort Barry Road Temporal Coverage Temporal characteristics of the resource. N/A 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/7884612190937a013f5d07accc998593.JPG c101e561c082c0e790fb71f1d769ddcd 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 2592 Height 1936 Bit Depth 8 Channels 3 https://dev.geosciencecollections.milne-library.org/files/original/bd4a9363dd5443ddead24436cc86b4ef.JPG 9d910207ba1128f9f728934592cb26cd 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 2592 Height 1936 Bit Depth 8 Channels 3 https://dev.geosciencecollections.milne-library.org/files/original/6abd8d9520d7f722fe325c68cae9c2ec.JPG 35eda1dcdf1f9393ad7505806849ac2d 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 2560 Height 1920 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 (SFM) Igneous Suite -- St. Francois Mountains, Southeastern Missouri Description An account of the resource This collection is composed of igneous volcanic and intrusive rocks from the St. Francois Mountains of Missouri. The variation within the collection can be used to explain the geologic history of the area. The St. Francois Mountains batholith was formed by granitic intrusions into Precambrian rhyolites, tuffs, and breccias. Then basalt, diabase, and porphyritic intrusions cut the granitoids. 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. Start here:Â Bickford, M.E. and Mose, D.G., 1974, Geochronology of Precambrian rocks, St. Francois Mountains, South eastern Missouri: GSA Special Papers 1975, v. 165, p. 1-48 doi: <a href="http://dx.doi.org/10.1130/SPE165-p1" target="_blank">http://dx.doi.org/10.1130/SPE165-p1 </a> <ul><li>Early study of the geochronology of the Precambrian rocks within the St. Francois mountains. Provides further insight upon the sequence discussed in the dscription.</li> </ul> Meert, J.G. and Stuckey, W., 2002, Revisiting the paleomagnetism of the 1.476 Ga St. Francois Mountains igneous province, Missouri: Tectonics v. 21, Issue 2, p. 1-19 doi: <a href="http://dx.doi.org/10.1029/2000TC001265%20" target="_blank">http://dx.doi.org/10.1029/2000TC001265 </a> <ul><li>Information acquired from paleomagnestism studies of the St. Francois igneous provence has proven fruitful for determining an acient paleomagnetic pole for Laurentia.Â </li> </ul> Menuge, J.F, Brewer, T.S., and Seeger, C.M., 2002, Petrogenesis of metaluminous A-type rhyolites from the St. Francois Mountains, Missouri and the Mesoproterozoic evolution of the southern Laurentian Margin: Precambrian Research, volume 113, issues 3-4, p. 269-291 doi: <a href="http//dx.doi.org/10.1016/S0301-9268(01)00211-X%20" target="_blank">http//dx.doi.org/10.1016/S0301-9268(01)00211-X </a> <ul><li>Trace elemental analysis of Precambrian rocks from the SFM provide insight into the condition of crystallization and the elemental constituents which played a role into the interesting history of this rhyolitic provence.Â </li> </ul> Rohs, R. C, and Van Schmus, W.R., 2006, Isotopic connection between basement rocks exposed in the St. Francois Mountains and the arbucks Mountains southern mid-continent, North America: International Journal of Earth Sciences, volume 96, Issue 4, p. 599-611 doi: <a href="http://dx.doi.org/10.1007/s00531-006-0123-5" target="_blank">http://dx.doi.org/10.1007/s00531-006-0123-5 </a> <ul><li>Radiometric study of the SFM provence and the Arbuckle mountains of southern Oklahoma suggests a common source.Â </li> </ul> Wenner, D. and Taylor Jr., H.P., 1976, Oxygen and hydrogen isotope studies of a Precambian granite-rhyolite terrane, ST. Francois Mountains, southeastern Missouri: Geological Society of America bulletin v. 87, no. 11, p.1587-1598 doi: <a href="http://dx.doi.org/10.1130/0016-7606" target="_blank">http://dx.doi.org/10.1130/0016-7606 </a> <ul><li>Isotopic analysis of oxygen isotope content within mineral grains within the Precambrian rhyolitic rocks of the SFM yields data that suggests Precambrian oceans were similar to modern day meteoric oceans.</li> </ul> Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. Spatial Coverage Spatial characteristics of the resource. St. Francois Mountains, Ozark region of Southeastern Missouri Temporal Coverage Temporal characteristics of the resource. Precambrian (1.476 Ga) Date A point or period of time associated with an event in the lifecycle of the resource January 20, 1969 Rock A physical material with a mineral composition. Number of Thin Sections Number of thin sections associated with this sample 2 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 Red Granite (coarse grained) Description An account of the resource Hand Sample: Holocrystalline, coarse-grained, phaneritic granite with dominant alkali feldspar crystals, as well as quartz and plagioclase feldspar. Veins or pockets of dark brown-black material dispersed intermittently. Thin Section, XPL: 60% medium-to-coarse-grained subhedral alkali feldspar, with unidentified medium-grained, fractured, crystals with no cleavage and high blue, orange, and pink birefringence. Date A point or period of time associated with an event in the lifecycle of the resource 1/20/1969 Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/15"> St. Francois Mountains Suite </a> Identifier An unambiguous reference to the resource within a given context SFM-9 Spatial Coverage Spatial characteristics of the resource. St. Francois Mtns. Batholith, Missouri, Cornwell Quarry Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. 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/35ebc29274395b80b031ffe15391456e.JPG 49da0419f997fbad5b7f61dadb1f7afb 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 2592 Height 1936 Bit Depth 8 Channels 3 https://dev.geosciencecollections.milne-library.org/files/original/1fa75e3f74429b6c7affb4379c52d7bd.JPG c11a5c91b4bc6266726fe18fbbb7ee43 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 https://dev.geosciencecollections.milne-library.org/files/original/af46f6296820a74dbdcb696c76bde523.JPG ef53528d0852d2039690e0f7b1b88e16 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 2560 Height 1920 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 (SFM) Igneous Suite -- St. Francois Mountains, Southeastern Missouri Description An account of the resource This collection is composed of igneous volcanic and intrusive rocks from the St. Francois Mountains of Missouri. The variation within the collection can be used to explain the geologic history of the area. The St. Francois Mountains batholith was formed by granitic intrusions into Precambrian rhyolites, tuffs, and breccias. Then basalt, diabase, and porphyritic intrusions cut the granitoids. 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. Start here:Â Bickford, M.E. and Mose, D.G., 1974, Geochronology of Precambrian rocks, St. Francois Mountains, South eastern Missouri: GSA Special Papers 1975, v. 165, p. 1-48 doi: <a href="http://dx.doi.org/10.1130/SPE165-p1" target="_blank">http://dx.doi.org/10.1130/SPE165-p1 </a> <ul><li>Early study of the geochronology of the Precambrian rocks within the St. Francois mountains. Provides further insight upon the sequence discussed in the dscription.</li> </ul> Meert, J.G. and Stuckey, W., 2002, Revisiting the paleomagnetism of the 1.476 Ga St. Francois Mountains igneous province, Missouri: Tectonics v. 21, Issue 2, p. 1-19 doi: <a href="http://dx.doi.org/10.1029/2000TC001265%20" target="_blank">http://dx.doi.org/10.1029/2000TC001265 </a> <ul><li>Information acquired from paleomagnestism studies of the St. Francois igneous provence has proven fruitful for determining an acient paleomagnetic pole for Laurentia.Â </li> </ul> Menuge, J.F, Brewer, T.S., and Seeger, C.M., 2002, Petrogenesis of metaluminous A-type rhyolites from the St. Francois Mountains, Missouri and the Mesoproterozoic evolution of the southern Laurentian Margin: Precambrian Research, volume 113, issues 3-4, p. 269-291 doi: <a href="http//dx.doi.org/10.1016/S0301-9268(01)00211-X%20" target="_blank">http//dx.doi.org/10.1016/S0301-9268(01)00211-X </a> <ul><li>Trace elemental analysis of Precambrian rocks from the SFM provide insight into the condition of crystallization and the elemental constituents which played a role into the interesting history of this rhyolitic provence.Â </li> </ul> Rohs, R. C, and Van Schmus, W.R., 2006, Isotopic connection between basement rocks exposed in the St. Francois Mountains and the arbucks Mountains southern mid-continent, North America: International Journal of Earth Sciences, volume 96, Issue 4, p. 599-611 doi: <a href="http://dx.doi.org/10.1007/s00531-006-0123-5" target="_blank">http://dx.doi.org/10.1007/s00531-006-0123-5 </a> <ul><li>Radiometric study of the SFM provence and the Arbuckle mountains of southern Oklahoma suggests a common source.Â </li> </ul> Wenner, D. and Taylor Jr., H.P., 1976, Oxygen and hydrogen isotope studies of a Precambian granite-rhyolite terrane, ST. Francois Mountains, southeastern Missouri: Geological Society of America bulletin v. 87, no. 11, p.1587-1598 doi: <a href="http://dx.doi.org/10.1130/0016-7606" target="_blank">http://dx.doi.org/10.1130/0016-7606 </a> <ul><li>Isotopic analysis of oxygen isotope content within mineral grains within the Precambrian rhyolitic rocks of the SFM yields data that suggests Precambrian oceans were similar to modern day meteoric oceans.</li> </ul> Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. Spatial Coverage Spatial characteristics of the resource. St. Francois Mountains, Ozark region of Southeastern Missouri Temporal Coverage Temporal characteristics of the resource. Precambrian (1.476 Ga) Date A point or period of time associated with an event in the lifecycle of the resource January 20, 1969 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 Red Granophyre (fine grained) Description An account of the resource Hand Sample: Holocrystalline phaneritic, porphyritic and granophyrite rich in alkali feldspar. Larger crystals or pockets of biotite and quartz also present. Rock is weathered to orange brown. Contact on one side with dark black-brown quartz-rich material. Possibly represents a roof pendant of chilled contact facies on the St. Francois Batholith Thin Section, XPL: Fine-grained subhedral crystals. 50% quartz, 35% alkali feldspar, 5% plagioclase feldspar, 5% biotite, 5% hornblende Date A point or period of time associated with an event in the lifecycle of the resource 1/20/1969 Is Part Of A related resource in which the described resource is physically or logically included. <a href="http://www.geosciencecollections.milne-library.org/collections/show/15"> St. Francois Mountains Suite </a> Identifier An unambiguous reference to the resource within a given context SFM-4 Spatial Coverage Spatial characteristics of the resource. St. Francois Mts. Batholith, Missouri at Scott's Quarry Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Contributor An entity responsible for making contributions to the resource Western Minerals, Inc https://dev.geosciencecollections.milne-library.org/files/original/d2fcaf97c629f8eaecc8524050a43343.JPG fcc5902a23beefbd795c6662798f4dfe 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 DUCO-1 hand sample of red shale https://dev.geosciencecollections.milne-library.org/files/original/3b3e56d9ca105e0b279039211b85bf03.png b4f98b0361b5d07e5d1a058caaa9a178 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 xpl / ppl 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 (DUCO) Barrovian Metamorphic Sequence -- Dutchess County, New York Contributor An entity responsible for making contributions to the resource Western Minerals, Inc. Accrual Method The method by which items are added to a collection. Purchased from Western Minerals, Inc. Description An account of the resource A classic example of Barrovian-type metamorphism in Dutchess County, NY associated with the Taconic orogeny. A Barrovian metamorphic sequence displays gradual pressure and temperature increase along the metamorphic gradient, and occurs during regional metamorphism. These zones of pressure and temperature increase are recognizable by the characteristic minerals that accompany them. Dutchess County, NY contains an unusually complete sequence. This collection contains metamorphic rocks from chlorite grade to sillimanite grade in a tight spatial window which records the regional metamorphic gradient increasing from WNW to ESE. This collection also contains some rocks that mirror the protoliths of the schists and quartzites of the sequence (shales and graywacke). Date A point or period of time associated with an event in the lifecycle of the resource 1970 Spatial Coverage Spatial characteristics of the resource. Dutchess County, New York Temporal Coverage Temporal characteristics of the resource. 450-430 Ma References A related resource that is referenced, cited, or otherwise pointed to by the described resource. Start Here: Vollmer, F. W., and Walker, J., 2009, The classic Barrovian metamorphic sequence of Dutchess County and its structural and stratigraphic context in the Taconic Orogeny. In Guidebookâ€”New York State Geological Association Meeting, v. 81, p. 11-1.Â <a href="http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf">http://www2.newpaltz.edu/~vollmerf/papers/Vollmer_and_Walker_2009_NYSGA.pdf</a>Â (accessed March 15th, 2015) <ul><li>A useful field trip guide across the Barrovian metamorphic sequence of Dutchess county. Good general introduction to the geology of the area.</li> </ul>Additional Resources: Whitney, D.L., Mechum, T.A., Keuhner, S.M., and Dilek, Y.R., 1996, Progressive metamorphism of pelitic rocks from protolith to granulite facies, Dutchess County, New York, USA: constraints on the timing of fluid infiltration during regional metamorphism, Journal of Metamorphic Geology, v. 14, p. 163-181. <a href="http://dx.doi.org/">http://dx.doi.org/10.1046/j.1525-1314.1996.05836.x</a> <ul><li>A fairly general look at the progressive metamorphism in Dutchess County by one of the foremost workers in the area.</li> </ul> Knopf, E.B., 1927, Some recent work in the Taconic area: American Journal of Science, v. 41, p. 42-458. <a href="http://dx.doi.org/">http://dx.doi.org/10.2475/ajs.s5-14.84.429</a> <ul><li>One of the first articles to describle the Dutchess County rocks as a "classic" Barrovian sequence.Â </li> </ul> Ghent, E.D., Stout, M.Z., 1981, Geobarometry and geothermometry of plagioclase-biotite-garnet-muscovite assemblages, Contributions to Mineralogy and Petrology, v. 76, p. 92-97. <a href="http://dx.doi.org/">http://dx.doi.org/10.1007/BF00373688</a> <ul><li>Work constraining the pressure and temperature paths of metamorphism in the sequence through equilibrium assemblages. This work was found to be in agreement with other equilibrium assemblage PT paths.</li> </ul> Whitney, D.L., Mechum, T.A., Dilek, Y.R., and Keuhner, S.M., 1996, Modification of garnet during regional metamorphism in garnet through sillimanite-zone rocks, Dutchess County, New York, American Mineralogist, v. 81, p. 696-705. <a href="http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf"> http://www.minsocam.org/MSA/AmMin/TOC/Articles_Free/1996/Whitney_p696-705_96.pdf</a> <ul><li>Work by Whitney on changes in PTX conditions leading to modification of garnet in the metamorphic sequence. Garnet is widely distributed through the sequence, which makes it a useful marker for tracking these changes.</li> </ul> Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Barrovian Metamorphic Sequence 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 DUCO-1 Title A name given to the resource Red shale Spatial Coverage Spatial characteristics of the resource. Dutchess Co., NY Contributor An entity responsible for making contributions to the resource Western Minerals 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/18">Barrovian Metamorphic Sequence--Dutchess County, New York</a> Description An account of the resource Red shale from the Indian River member of the Normanskill formation. This rock contains hematite, chlorite, muscovite, plagioclase, and quartz. The thin section shows muscovite and biotite with some larger quartz grains visible and minor hematite staining. This rock is from the chlorite zone of the Barrovian metamorphic sequence (low metamorphism). This rock was collected from the east end of a large road cut which samples 2 and 3 were also collected from. 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/fedbc0685dcad76cfd4c2d141121a420.jpg 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="Êºhttp://www.geosciencecollections.milne-library.org/items/show/162Êº">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. https://dev.geosciencecollections.milne-library.org/files/original/0c612a1d84feeac686b2256072f85b4e.JPG 5b266b30298ab34be38e6bae064534eb 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 2272 Height 1704 Bit Depth 8 Channels 3 https://dev.geosciencecollections.milne-library.org/files/original/926100a7408436dfd0af0b01d46755e5.jpg d0e1397c9253936eb3f927c90faef034 https://dev.geosciencecollections.milne-library.org/files/original/d6594b7d72c8ce1cf56ac2d258ebf92d.jpg ba5e02fea090a34d7abad4db485afbd7 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 (GC) Grand Canyon Stratigraphic Suite -- Grand Canyon, Arizona Description An account of the resource This collection contains 21 samples. They are a representation of samples of lithology from the early precambrian to the late permian. The stratigraphic sequence contains a variety of rocks including, but not limited to schist, limestone, and sandstone. These specimens are representative of the geologic section in the Grand Canyon, but no specimens were collected within the boundaries of the National Park. 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. Start Here: Blakey, R.C., and Middleton, L.T., 2012, Geologic history and paleogeography of paleozoic and early mesozoic sedimentary rocks, eastern Grand Canyon, Arizona: Geologic Society of America Bulletin, v. 489, pp. 81-92, doi: <a href="%20http%3A//dx.doi.org/10.1130/2012.2489(05)">10.1130/2012.2489(05)</a> <a href="http://dx.doi.org/10.1130/2012.2489(05)%20" target="_blank"> </a> <ul><li>This reference outlines the stratigraphy found in this suite. It specifically highlights the paleozoic era in which the samples represent.Â </li> </ul> Additional Resources:Â Brown, E.H., Babcock, R.S., Clark, M.D., and Livingston, D.E., 1979,Â Geology of the older Precambrian rocks of the Grand Canyon Part I. Petrology and structure of the Vishnu Complex: Precambrian Research, v. 8, p. 219-241, doi:Â <a href="http://dx.doi.org/10.1016/0301-9268(79)90030-5%20">10.1016/0301-9268(79)90030-5Â </a> <ul><li>Brown et al. begins this series of 3 articles outlining the geologic timescale and discusses the Vishnu complex and how it fits into the geologic timescale. It provides an explaination for several of the samples in this collection.Â </li> </ul> Brown, E.H., Babcock, R.S., Clark, M.D., and Livingston, D.E., 1979,Â Geology of the older Precambrian rocks of the Grand Canyon Part II. The Zoroaster Plutonic Complex and related rocks: Precambrian Research, v. 8, p. 243-275, doi:Â <a href="http://dx.doi.org/10.1016/0301-9268(79)90031-7" target="_blank">10.1016/0301-9268(79)90031-7</a> <ul><li>In the second part of the article, the authors discuss the importance of the pluton and how it affected the formation of the stratigraphic profile of the grand canyon.Â </li> </ul> Clark, M.D., 1979,Â Geology of the older Precambrian rocks of the Grand Canyon. Part III. Petrology of mafic schists and amphibolites: Precambrian Research, v. 8, p. 277-302, doi:Â <a href="http://dx.doi.org/10.1016/0301-9268(79)90032-9" target="_blank">10.1016/0301-9268(79)90032-9</a> <ul><li>The final section of this discussion set provides insight into the mafic layers of the stratigraphic column.Â </li> </ul> Ilg, B.R., Karlstrom, K.E., Hawkins, D.P., and Williams, M.L., 1996,Â Tectonic evolution of Paleoproterozoic rocks in the Grand Canyon: Insights into middle-crustal processes:Â Bulletin of the Geological Society of America, v. 108, p. 1149-1166, doi:Â <a href="http://dx.doi.org/10.1130/0016-7606(1996)108" target="_blank">10.1130/0016-7606(1996)108</a> <ul><li>This is a general look into the formation of the stratigraphic layers. This article does a good job combining the above articles into one condensed summary.Â </li> </ul> Spatial Coverage Spatial characteristics of the resource. Peach Springs, Mohave Co., Arizona Peach Springs, Coconino Co., Arizona Seligman, Ysvupai Co., Arizona Williams, Coconino Co., Arizona Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. Temporal Coverage Temporal characteristics of the resource. Samples range from Precambrian - Permian Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Redwall Limestone 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 Redwall Limestone (Conglomerate) Description An account of the resource Though listed as a limestone, this sample is best described as a conglomerate with calcite present in the matrix. This sample was collected from a bed of conglomerate lithology just below contact with Supai formation. Both thin section images were taken at a 400x magnification. Date A point or period of time associated with an event in the lifecycle of the resource no date 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/1">Grand Canyon Western Minerals Supplementary Information</a> Identifier An unambiguous reference to the resource within a given context GC-13 Spatial Coverage Spatial characteristics of the resource. Base of roadcut on US 66, S. end of Aubrey Cliffs, 4.0 mi. W. of Seligman, Ysvupai Co., Arizona. Temporal Coverage Temporal characteristics of the resource. Mississippian Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Conglomerate https://dev.geosciencecollections.milne-library.org/files/original/2df4dca9ddf1479486a47df90bd760d3.JPG d4010e565b55c0e53e8da594e24a55a0 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 2272 Height 1704 Bit Depth 8 Channels 3 https://dev.geosciencecollections.milne-library.org/files/original/2a182c022d70ad5fad6e47d6eedce45d.JPG fb6a8b834a1ecccdb5dc98fcd8e0b32c https://dev.geosciencecollections.milne-library.org/files/original/89d0e96f62dd645b00e2017c69b20477.JPG 74ea9d6932e726dd400a13313033d250 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 (GC) Grand Canyon Stratigraphic Suite -- Grand Canyon, Arizona Description An account of the resource This collection contains 21 samples. They are a representation of samples of lithology from the early precambrian to the late permian. The stratigraphic sequence contains a variety of rocks including, but not limited to schist, limestone, and sandstone. These specimens are representative of the geologic section in the Grand Canyon, but no specimens were collected within the boundaries of the National Park. 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. Start Here: Blakey, R.C., and Middleton, L.T., 2012, Geologic history and paleogeography of paleozoic and early mesozoic sedimentary rocks, eastern Grand Canyon, Arizona: Geologic Society of America Bulletin, v. 489, pp. 81-92, doi: <a href="%20http%3A//dx.doi.org/10.1130/2012.2489(05)">10.1130/2012.2489(05)</a> <a href="http://dx.doi.org/10.1130/2012.2489(05)%20" target="_blank"> </a> <ul><li>This reference outlines the stratigraphy found in this suite. It specifically highlights the paleozoic era in which the samples represent.Â </li> </ul> Additional Resources:Â Brown, E.H., Babcock, R.S., Clark, M.D., and Livingston, D.E., 1979,Â Geology of the older Precambrian rocks of the Grand Canyon Part I. Petrology and structure of the Vishnu Complex: Precambrian Research, v. 8, p. 219-241, doi:Â <a href="http://dx.doi.org/10.1016/0301-9268(79)90030-5%20">10.1016/0301-9268(79)90030-5Â </a> <ul><li>Brown et al. begins this series of 3 articles outlining the geologic timescale and discusses the Vishnu complex and how it fits into the geologic timescale. It provides an explaination for several of the samples in this collection.Â </li> </ul> Brown, E.H., Babcock, R.S., Clark, M.D., and Livingston, D.E., 1979,Â Geology of the older Precambrian rocks of the Grand Canyon Part II. The Zoroaster Plutonic Complex and related rocks: Precambrian Research, v. 8, p. 243-275, doi:Â <a href="http://dx.doi.org/10.1016/0301-9268(79)90031-7" target="_blank">10.1016/0301-9268(79)90031-7</a> <ul><li>In the second part of the article, the authors discuss the importance of the pluton and how it affected the formation of the stratigraphic profile of the grand canyon.Â </li> </ul> Clark, M.D., 1979,Â Geology of the older Precambrian rocks of the Grand Canyon. Part III. Petrology of mafic schists and amphibolites: Precambrian Research, v. 8, p. 277-302, doi:Â <a href="http://dx.doi.org/10.1016/0301-9268(79)90032-9" target="_blank">10.1016/0301-9268(79)90032-9</a> <ul><li>The final section of this discussion set provides insight into the mafic layers of the stratigraphic column.Â </li> </ul> Ilg, B.R., Karlstrom, K.E., Hawkins, D.P., and Williams, M.L., 1996,Â Tectonic evolution of Paleoproterozoic rocks in the Grand Canyon: Insights into middle-crustal processes:Â Bulletin of the Geological Society of America, v. 108, p. 1149-1166, doi:Â <a href="http://dx.doi.org/10.1130/0016-7606(1996)108" target="_blank">10.1130/0016-7606(1996)108</a> <ul><li>This is a general look into the formation of the stratigraphic layers. This article does a good job combining the above articles into one condensed summary.Â </li> </ul> Spatial Coverage Spatial characteristics of the resource. Peach Springs, Mohave Co., Arizona Peach Springs, Coconino Co., Arizona Seligman, Ysvupai Co., Arizona Williams, Coconino Co., Arizona Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. Temporal Coverage Temporal characteristics of the resource. Samples range from Precambrian - Permian Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Redwall Limestone Number of Thin Sections Number of thin sections associated with this sample 2 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 Redwall Limestone (green conglomerate lithology) Description An account of the resource Fine-grained limestone with occasional fossil remains. Both thin section images were taken at a 400x magnification. Date A point or period of time associated with an event in the lifecycle of the resource no date 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/1">Grand Canyon Western Minerals Supplementary Information</a> Identifier An unambiguous reference to the resource within a given context GC-11 Spatial Coverage Spatial characteristics of the resource. S. side of roadcut 13 mi, E. of Peach Springs, Coconino Co., Ariz Temporal Coverage Temporal characteristics of the resource. Mississippian Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Limestone https://dev.geosciencecollections.milne-library.org/files/original/4a47a83c7ebb7962ebf306b07108cdf9.JPG e3a4d20e6e03413c8ebb534703e252e3 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 2272 Height 1704 Bit Depth 8 Channels 3 https://dev.geosciencecollections.milne-library.org/files/original/e2d5cfcd9586f5ecbd12553ed2ab4cbd.jpg 2e6a3d18d71c709f28146cea6caf09ea https://dev.geosciencecollections.milne-library.org/files/original/25f231d2208e511d599bb5b7b7335bef.jpg 827e671a7fc890f338edcbaa95b85380 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 (GC) Grand Canyon Stratigraphic Suite -- Grand Canyon, Arizona Description An account of the resource This collection contains 21 samples. They are a representation of samples of lithology from the early precambrian to the late permian. The stratigraphic sequence contains a variety of rocks including, but not limited to schist, limestone, and sandstone. These specimens are representative of the geologic section in the Grand Canyon, but no specimens were collected within the boundaries of the National Park. 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. Start Here: Blakey, R.C., and Middleton, L.T., 2012, Geologic history and paleogeography of paleozoic and early mesozoic sedimentary rocks, eastern Grand Canyon, Arizona: Geologic Society of America Bulletin, v. 489, pp. 81-92, doi: <a href="%20http%3A//dx.doi.org/10.1130/2012.2489(05)">10.1130/2012.2489(05)</a> <a href="http://dx.doi.org/10.1130/2012.2489(05)%20" target="_blank"> </a> <ul><li>This reference outlines the stratigraphy found in this suite. It specifically highlights the paleozoic era in which the samples represent.Â </li> </ul> Additional Resources:Â Brown, E.H., Babcock, R.S., Clark, M.D., and Livingston, D.E., 1979,Â Geology of the older Precambrian rocks of the Grand Canyon Part I. Petrology and structure of the Vishnu Complex: Precambrian Research, v. 8, p. 219-241, doi:Â <a href="http://dx.doi.org/10.1016/0301-9268(79)90030-5%20">10.1016/0301-9268(79)90030-5Â </a> <ul><li>Brown et al. begins this series of 3 articles outlining the geologic timescale and discusses the Vishnu complex and how it fits into the geologic timescale. It provides an explaination for several of the samples in this collection.Â </li> </ul> Brown, E.H., Babcock, R.S., Clark, M.D., and Livingston, D.E., 1979,Â Geology of the older Precambrian rocks of the Grand Canyon Part II. The Zoroaster Plutonic Complex and related rocks: Precambrian Research, v. 8, p. 243-275, doi:Â <a href="http://dx.doi.org/10.1016/0301-9268(79)90031-7" target="_blank">10.1016/0301-9268(79)90031-7</a> <ul><li>In the second part of the article, the authors discuss the importance of the pluton and how it affected the formation of the stratigraphic profile of the grand canyon.Â </li> </ul> Clark, M.D., 1979,Â Geology of the older Precambrian rocks of the Grand Canyon. Part III. Petrology of mafic schists and amphibolites: Precambrian Research, v. 8, p. 277-302, doi:Â <a href="http://dx.doi.org/10.1016/0301-9268(79)90032-9" target="_blank">10.1016/0301-9268(79)90032-9</a> <ul><li>The final section of this discussion set provides insight into the mafic layers of the stratigraphic column.Â </li> </ul> Ilg, B.R., Karlstrom, K.E., Hawkins, D.P., and Williams, M.L., 1996,Â Tectonic evolution of Paleoproterozoic rocks in the Grand Canyon: Insights into middle-crustal processes:Â Bulletin of the Geological Society of America, v. 108, p. 1149-1166, doi:Â <a href="http://dx.doi.org/10.1130/0016-7606(1996)108" target="_blank">10.1130/0016-7606(1996)108</a> <ul><li>This is a general look into the formation of the stratigraphic layers. This article does a good job combining the above articles into one condensed summary.Â </li> </ul> Spatial Coverage Spatial characteristics of the resource. Peach Springs, Mohave Co., Arizona Peach Springs, Coconino Co., Arizona Seligman, Ysvupai Co., Arizona Williams, Coconino Co., Arizona Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. Temporal Coverage Temporal characteristics of the resource. Samples range from Precambrian - Permian Rock A physical material with a mineral composition. Unit Formation or other descriptive rock category Redwall Limestone 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 Redwall Limestone (Oblitic and Crinoidal Lithology) Description An account of the resource Oblitic and Crinoidal Lithology. Both thin section images were taken at a 400x magnification. Date A point or period of time associated with an event in the lifecycle of the resource no date 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/1">Grand Canyon Western Minerals Supplementary Information</a> Identifier An unambiguous reference to the resource within a given context GC-10 Spatial Coverage Spatial characteristics of the resource. S. side of roadcut on US 66, 4.5 mi. E. of Peach Springs, Arizona Temporal Coverage Temporal characteristics of the resource. Mississippian Accrual Method The method by which items are added to a collection. Purchased from Western Minerals Inc. Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Limestone 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 Maps Still Image A static visual representation. Examples of still images are: paintings, drawings, graphic designs, plans and maps. Recommended best practice is to assign the type "text" to images of textual materials. Physical Dimensions The actual physical size of the original image. 0/50 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 8 Title A name given to the resource Refuge, ARK - MISS Alternative Title An alternative name for the resource. The distinction between titles and alternative titles is application-specific. Refuge, AR - MS Quadrangle Creator An entity primarily responsible for making the resource US Army Corps of Engineers Date Created Date of creation of the resource. 1930 Date Modified Date on which the resource was changed. 1939 Source A related resource from which the described resource is derived MAP144A-11 Publisher An entity responsible for making the resource available US Geological Survey Subject The topic of the resource Topography Spatial Coverage Spatial characteristics of the resource. Greenville, Arkansas, United States Description An account of the resource 1:62500 Extent The size or duration of the resource. 50 Relation A related resource Readland, Eudora, Lake Village, McGehee, Swan Lake, Choctaw, Lamont