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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
(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.
<p><strong>Start here:<br /></strong>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. <a href="http://dx.doi.org/10.2138/am-2015-4850" target="_blank"><span>doi: </span><span class="slug-doi">10.2138/am-2015-4850</span></a></p>
<ul><li>This source supplies useful information on the low temperature, high pressure environment in which these rocks formed. </li>
</ul><strong>Additional resources:<br /></strong>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. <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><br /><ul><li>Describes the petrogenesis of serpentine as seen in one of the items in the collection (Fr-4).</li>
</ul><p>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></p>
<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><p>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></p>
<ul><li>This article states that the europium anomalies of the greywacke samples suggest provenance from the Sierra Nevada batholith.</li>
</ul><p>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></p>
<ul><li><span>Using magnetic data, this article provides an overview of the regional structure of the Franciscan Complex.</span></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
Arkosic Graywacke
Alternative Title
An alternative name for the resource. The distinction between titles and alternative titles is application-specific.
Sandstone
Description
An account of the resource
Grain sizes sand to silty sand, rounded and angular with very minor examples of weathering and thin quartz vein present. Collected from the same quarry as FR-2. (FOV: 1.28mm)
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-1
Spatial Coverage
Spatial characteristics of the resource.
Unsurveyed portion of T 3 S, R 5 W near Brisbane. CPA company quarry 4100 ft. east from "Peak 1314" in
the San Bruno mountains.
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.
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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
(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.
<p><strong>Start here:<br /></strong>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. <a href="http://dx.doi.org/10.2138/am-2015-4850" target="_blank"><span>doi: </span><span class="slug-doi">10.2138/am-2015-4850</span></a></p>
<ul><li>This source supplies useful information on the low temperature, high pressure environment in which these rocks formed. </li>
</ul><strong>Additional resources:<br /></strong>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. <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><br /><ul><li>Describes the petrogenesis of serpentine as seen in one of the items in the collection (Fr-4).</li>
</ul><p>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></p>
<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><p>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></p>
<ul><li>This article states that the europium anomalies of the greywacke samples suggest provenance from the Sierra Nevada batholith.</li>
</ul><p>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></p>
<ul><li><span>Using magnetic data, this article provides an overview of the regional structure of the Franciscan Complex.</span></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
Arkosic Graywacke
Alternative Title
An alternative name for the resource. The distinction between titles and alternative titles is application-specific.
Sandstone
Description
An account of the resource
Grain size is fine sand to silty sand, mostly angular with some rounded crystals. Various shades of surficial weathering with distinct pockets of orange-brown oxydation. Fresh surfaces brown-green in color. Collected from same quarry as sample FR-1. (Thin Section FOV: 1.28mm)
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-2
Spatial Coverage
Spatial characteristics of the resource.
Collected from another part of the same
quarry as specimen FR-1.
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.
-
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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
(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.
<p><strong>Start here:<br /></strong>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. <a href="http://dx.doi.org/10.2138/am-2015-4850" target="_blank"><span>doi: </span><span class="slug-doi">10.2138/am-2015-4850</span></a></p>
<ul><li>This source supplies useful information on the low temperature, high pressure environment in which these rocks formed. </li>
</ul><strong>Additional resources:<br /></strong>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. <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><br /><ul><li>Describes the petrogenesis of serpentine as seen in one of the items in the collection (Fr-4).</li>
</ul><p>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></p>
<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><p>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></p>
<ul><li>This article states that the europium anomalies of the greywacke samples suggest provenance from the Sierra Nevada batholith.</li>
</ul><p>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></p>
<ul><li><span>Using magnetic data, this article provides an overview of the regional structure of the Franciscan Complex.</span></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.
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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
(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.
<p><strong>Start here:<br /></strong>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. <a href="http://dx.doi.org/10.2138/am-2015-4850" target="_blank"><span>doi: </span><span class="slug-doi">10.2138/am-2015-4850</span></a></p>
<ul><li>This source supplies useful information on the low temperature, high pressure environment in which these rocks formed. </li>
</ul><strong>Additional resources:<br /></strong>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. <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><br /><ul><li>Describes the petrogenesis of serpentine as seen in one of the items in the collection (Fr-4).</li>
</ul><p>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></p>
<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><p>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></p>
<ul><li>This article states that the europium anomalies of the greywacke samples suggest provenance from the Sierra Nevada batholith.</li>
</ul><p>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></p>
<ul><li><span>Using magnetic data, this article provides an overview of the regional structure of the Franciscan Complex.</span></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
Serpentine
Description
An account of the resource
Fresh surfaces are dark blue in color, while weathered surfaces range in shades of green. Asbestos veins intersect throughout the rock, making up ~5% of the crystal mass. (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-4
Spatial Coverage
Spatial characteristics of the resource.
Roadcut on east side of Highway 1 (Panoramic highway) 17 miles El of south side of Golden Gate Bridge go along US 101 then turn on state highway 1 to 17 miles,
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.
-
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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
(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.
<p><strong>Start here:<br /></strong>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. <a href="http://dx.doi.org/10.2138/am-2015-4850" target="_blank"><span>doi: </span><span class="slug-doi">10.2138/am-2015-4850</span></a></p>
<ul><li>This source supplies useful information on the low temperature, high pressure environment in which these rocks formed. </li>
</ul><strong>Additional resources:<br /></strong>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. <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><br /><ul><li>Describes the petrogenesis of serpentine as seen in one of the items in the collection (Fr-4).</li>
</ul><p>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></p>
<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><p>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></p>
<ul><li>This article states that the europium anomalies of the greywacke samples suggest provenance from the Sierra Nevada batholith.</li>
</ul><p>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></p>
<ul><li><span>Using magnetic data, this article provides an overview of the regional structure of the Franciscan Complex.</span></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
Graywacke Siltstone
Description
An account of the resource
Angular, silty size gains, composed of equal parts quatz, feldspars and rock fragments. Prominent orange and brown surface oxydation on all samples. Some samples contain evidence of bedding planes. Calicte is found along bedding planes, as well as on some surfaces perpendicular to bedding. Some samples include very fine calcite veins (<0.5mm) intersecting through the bedding planes. (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-5
Spatial Coverage
Spatial characteristics of the resource.
Roadcut on south side of Petaluma Pt.
Reyes Station road 1/2 mi. upstream (east) from dam which is about 4 miles east of Point Reyes Station.
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.
-
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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
(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.
<p><strong>Start here:<br /></strong>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. <a href="http://dx.doi.org/10.2138/am-2015-4850" target="_blank"><span>doi: </span><span class="slug-doi">10.2138/am-2015-4850</span></a></p>
<ul><li>This source supplies useful information on the low temperature, high pressure environment in which these rocks formed. </li>
</ul><strong>Additional resources:<br /></strong>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. <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><br /><ul><li>Describes the petrogenesis of serpentine as seen in one of the items in the collection (Fr-4).</li>
</ul><p>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></p>
<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><p>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></p>
<ul><li>This article states that the europium anomalies of the greywacke samples suggest provenance from the Sierra Nevada batholith.</li>
</ul><p>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></p>
<ul><li><span>Using magnetic data, this article provides an overview of the regional structure of the Franciscan Complex.</span></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
Diabase
Description
An account of the resource
Holocrystalline, medium grained, anhedral, ophitic, dibastic crystals. Low silica percentage (46.3%) for a Diabase, bordering on ultramafic compostion. Calcite is present on weathered surfaces, but not on fresh surfaces. (FOV: 3.2mm)
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-6
Spatial Coverage
Spatial characteristics of the resource.
Same as FR-5.
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.
-
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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
(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.
<p><strong>Start here:<br /></strong>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. <a href="http://dx.doi.org/10.2138/am-2015-4850" target="_blank"><span>doi: </span><span class="slug-doi">10.2138/am-2015-4850</span></a></p>
<ul><li>This source supplies useful information on the low temperature, high pressure environment in which these rocks formed. </li>
</ul><strong>Additional resources:<br /></strong>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. <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><br /><ul><li>Describes the petrogenesis of serpentine as seen in one of the items in the collection (Fr-4).</li>
</ul><p>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></p>
<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><p>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></p>
<ul><li>This article states that the europium anomalies of the greywacke samples suggest provenance from the Sierra Nevada batholith.</li>
</ul><p>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></p>
<ul><li><span>Using magnetic data, this article provides an overview of the regional structure of the Franciscan Complex.</span></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
Graywacke
Alternative Title
An alternative name for the resource. The distinction between titles and alternative titles is application-specific.
Sandstone
Description
An account of the resource
Angular sand size grains, dominated by quartz, have a brown color with a greenish tint. Calcite found on weathered bedding planes after lithification. Slight folding of the bedding planes in one direction. (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-7
Spatial Coverage
Spatial characteristics of the resource.
From summit of pass (White's Hill) just east of Forest Knolls on Sir Francis Drake Highway,
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.
-
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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
(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.
<p><strong>Start here:<br /></strong>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. <a href="http://dx.doi.org/10.2138/am-2015-4850" target="_blank"><span>doi: </span><span class="slug-doi">10.2138/am-2015-4850</span></a></p>
<ul><li>This source supplies useful information on the low temperature, high pressure environment in which these rocks formed. </li>
</ul><strong>Additional resources:<br /></strong>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. <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><br /><ul><li>Describes the petrogenesis of serpentine as seen in one of the items in the collection (Fr-4).</li>
</ul><p>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></p>
<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><p>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></p>
<ul><li>This article states that the europium anomalies of the greywacke samples suggest provenance from the Sierra Nevada batholith.</li>
</ul><p>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></p>
<ul><li><span>Using magnetic data, this article provides an overview of the regional structure of the Franciscan Complex.</span></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
Calera-type Limestone with Chert
Alternative Title
An alternative name for the resource. The distinction between titles and alternative titles is application-specific.
Limestone with Chert
Description
An account of the resource
Groundmass dominated by grey calcite and dolomite. Calcite and dolomite crystals are subhedral in thin section and hand sample.. (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-8
Spatial Coverage
Spatial characteristics of the resource.
Permanent Cement Co. quarry, near Cupertino. Take I 280 south from San Francisco to Foothill Expressway, then west to Stevens Creek Road, then right on Stevens
Creek Road to end.
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.
-
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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
(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.
<p><strong>Start here:<br /></strong>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. <a href="http://dx.doi.org/10.2138/am-2015-4850" target="_blank"><span>doi: </span><span class="slug-doi">10.2138/am-2015-4850</span></a></p>
<ul><li>This source supplies useful information on the low temperature, high pressure environment in which these rocks formed. </li>
</ul><strong>Additional resources:<br /></strong>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. <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><br /><ul><li>Describes the petrogenesis of serpentine as seen in one of the items in the collection (Fr-4).</li>
</ul><p>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></p>
<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><p>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></p>
<ul><li>This article states that the europium anomalies of the greywacke samples suggest provenance from the Sierra Nevada batholith.</li>
</ul><p>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></p>
<ul><li><span>Using magnetic data, this article provides an overview of the regional structure of the Franciscan Complex.</span></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
Calera type Limestone
Alternative Title
An alternative name for the resource. The distinction between titles and alternative titles is application-specific.
Limestone
Description
An account of the resource
Fresh surfaces contain grey-white, anhedral calcite and dolomite crystals. Weathered surfaces are dark brown, with a fine powder observable after handling in hand sample. Bubbles from acid reaction turn dark brown on weathered surfaces. These weathered bubbles leave behind a brown residue. Bubbles on fresh faces remain white and leave no residue. (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-9
Spatial Coverage
Spatial characteristics of the resource.
Same locality as FR-8
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.
-
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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
(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.
<p><strong>Start here:<br /></strong>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. <a href="http://dx.doi.org/10.2138/am-2015-4850" target="_blank"><span>doi: </span><span class="slug-doi">10.2138/am-2015-4850</span></a></p>
<ul><li>This source supplies useful information on the low temperature, high pressure environment in which these rocks formed. </li>
</ul><strong>Additional resources:<br /></strong>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. <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><br /><ul><li>Describes the petrogenesis of serpentine as seen in one of the items in the collection (Fr-4).</li>
</ul><p>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></p>
<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><p>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></p>
<ul><li>This article states that the europium anomalies of the greywacke samples suggest provenance from the Sierra Nevada batholith.</li>
</ul><p>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></p>
<ul><li><span>Using magnetic data, this article provides an overview of the regional structure of the Franciscan Complex.</span></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
Arkosic Graywacke
Alternative Title
An alternative name for the resource. The distinction between titles and alternative titles is application-specific.
Sandstone
Description
An account of the resource
Coarse sand grains made of quartz, surrounded by smaller feldspar grains. Greenish blue surface color, minimal surface weathering.
(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-10
Spatial Coverage
Spatial characteristics of the resource.
Quarry face at back of parking lot of Castle Lanes Bowling Center on Geneva Ave. (near the Cow palace) on the north side of San Bruno Mountain.
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.
-
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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
(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.
<p><strong>Start here:<br /></strong>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. <a href="http://dx.doi.org/10.2138/am-2015-4850" target="_blank"><span>doi: </span><span class="slug-doi">10.2138/am-2015-4850</span></a></p>
<ul><li>This source supplies useful information on the low temperature, high pressure environment in which these rocks formed. </li>
</ul><strong>Additional resources:<br /></strong>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. <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><br /><ul><li>Describes the petrogenesis of serpentine as seen in one of the items in the collection (Fr-4).</li>
</ul><p>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></p>
<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><p>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></p>
<ul><li>This article states that the europium anomalies of the greywacke samples suggest provenance from the Sierra Nevada batholith.</li>
</ul><p>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></p>
<ul><li><span>Using magnetic data, this article provides an overview of the regional structure of the Franciscan Complex.</span></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.
-
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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
(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.
<p><strong>Start here:<br /></strong>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. <a href="http://dx.doi.org/10.2138/am-2015-4850" target="_blank"><span>doi: </span><span class="slug-doi">10.2138/am-2015-4850</span></a></p>
<ul><li>This source supplies useful information on the low temperature, high pressure environment in which these rocks formed. </li>
</ul><strong>Additional resources:<br /></strong>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. <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><br /><ul><li>Describes the petrogenesis of serpentine as seen in one of the items in the collection (Fr-4).</li>
</ul><p>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></p>
<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><p>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></p>
<ul><li>This article states that the europium anomalies of the greywacke samples suggest provenance from the Sierra Nevada batholith.</li>
</ul><p>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></p>
<ul><li><span>Using magnetic data, this article provides an overview of the regional structure of the Franciscan Complex.</span></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
Graywacke
Alternative Title
An alternative name for the resource. The distinction between titles and alternative titles is application-specific.
Sandstone
Description
An account of the resource
Sand sized quartz grains and smaller feldspars make up the matrix. Grey-brown sand weathers to a rusty golden color.
(Thin Section FOV: 1.28mm)
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-12
Spatial Coverage
Spatial characteristics of the resource.
Old quarry face in north side of Telegraph Hill, on Kearny St, just south of Francisco Street.
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.
-
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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
(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.
<p><strong>Start here:<br /></strong>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. <a href="http://dx.doi.org/10.2138/am-2015-4850" target="_blank"><span>doi: </span><span class="slug-doi">10.2138/am-2015-4850</span></a></p>
<ul><li>This source supplies useful information on the low temperature, high pressure environment in which these rocks formed. </li>
</ul><strong>Additional resources:<br /></strong>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. <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><br /><ul><li>Describes the petrogenesis of serpentine as seen in one of the items in the collection (Fr-4).</li>
</ul><p>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></p>
<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><p>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></p>
<ul><li>This article states that the europium anomalies of the greywacke samples suggest provenance from the Sierra Nevada batholith.</li>
</ul><p>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></p>
<ul><li><span>Using magnetic data, this article provides an overview of the regional structure of the Franciscan Complex.</span></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
Graywacke
Alternative Title
An alternative name for the resource. The distinction between titles and alternative titles is application-specific.
Siltstone
Description
An account of the resource
Equal mix of angular and rounded sand-sized grains of quartz, with clay sized feldspars. Surface contains significant coverage of calcite that formed after lithification. Fresh surfaces do not effervesce with acid meaning that reaction is based on secondary calcite formation.
(Thin Section FOV: 1.28mm)
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-13
Spatial Coverage
Spatial characteristics of the resource.
In an old quarry just east of state Highway 1 just south of the town of Tomales in the northern part of Marin County.
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.
-
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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
(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.
<p><strong>Start here:<br /></strong>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. <a href="http://dx.doi.org/10.2138/am-2015-4850" target="_blank"><span>doi: </span><span class="slug-doi">10.2138/am-2015-4850</span></a></p>
<ul><li>This source supplies useful information on the low temperature, high pressure environment in which these rocks formed. </li>
</ul><strong>Additional resources:<br /></strong>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. <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><br /><ul><li>Describes the petrogenesis of serpentine as seen in one of the items in the collection (Fr-4).</li>
</ul><p>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></p>
<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><p>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></p>
<ul><li>This article states that the europium anomalies of the greywacke samples suggest provenance from the Sierra Nevada batholith.</li>
</ul><p>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></p>
<ul><li><span>Using magnetic data, this article provides an overview of the regional structure of the Franciscan Complex.</span></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
Black Silty Shale
Alternative Title
An alternative name for the resource. The distinction between titles and alternative titles is application-specific.
Shale
Description
An account of the resource
Clay sized feldspars and quartz present, but majority of crystal grains too small to identify in thin section. Surface contains some calcite that formed after lithification. Fresh surfaces do not effervesce with acid meaning reaction is caused by secondary calcite growth.
(Thin Section 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-14
Spatial Coverage
Spatial characteristics of the resource.
Same locality as FR-13
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.
-
https://dev.geosciencecollections.milne-library.org/files/original/6acbc266e2f344ea2732c2cce34e97af.jpeg
9d4c1b1c84f8c9e592dab78f67324f5c
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
Hand Sample
https://dev.geosciencecollections.milne-library.org/files/original/3ef1ea784094e723d3ff29469f9f5a2a.jpg
4af7afe9347625f72b5dcc8bdbc11cea
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
40x Magnification
https://dev.geosciencecollections.milne-library.org/files/original/9cc71e5c5cfb954d3257148b1a730bd1.jpg
9960af1005c7be003af61415f886a351
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
100x Magnification
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
(HA) Volcanic Phenomena Suite -- The Hawaiian Islands of Hawaii and Oahu
Description
An account of the resource
These 31 samples comprise a collection of volcanic rocks associated with the hot-spot volcanism of the Hawaiian Islands. Samples were collected from various locations across the islands of Hawaii and Oahu. The collection contains samples of primarily tholeiitic & alkalic basalts, pumice, scoria, oceanite, and hawaiite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Date
A point or period of time associated with an event in the lifecycle of the resource
1969
Identifier
An unambiguous reference to the resource within a given context
HA-1 - HA-31
Spatial Coverage
Spatial characteristics of the resource.
Samples were collected from various locations on the islands of Hawaii and Oahu.
Temporal Coverage
Temporal characteristics of the resource.
Samples formed from Holocene eruptions of the past 300 years. Dated samples formed between 1750 and 1960.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<p><strong>Start here:<br /></strong>Macdonald, G.A., 1949, Petrography of the Island of Hawaii, U.S.G.S. Prof. Paper 214 D</p>
<ul><li>This article is a part of the general investigation of the island of Hawaii by the United States Geologic Survey. The paper describes the dominant volcanoes of the island of Hawaii (from which most of the suite's samples were collected) and describes the petrographic phenomena observed and geochemical analyses of volcanic rocks. </li>
</ul><p><strong>Additional Resources:</strong><br />Ho, R.A., Garcia, M.O., 1988, Origin of differentiated lavas at Kilauea Volcano, Hawaii; implications from the 1955 eruption: Bulletin of Volcanology, v. 50, p. 35-46.</p>
<ul><li>This article describes a study of lava flows from the 1955 eruption of the Kilauea Volcano on the island of Hawaii to evaluate models of crystal fractionation or magma mixing as the processes forming differentiated magmas. Through geochemical analyses, the study concluded that crystal fractionation resulted in the observed differentiation of lavas.</li>
</ul><p><br />Hofman, A.W., Farnetani, C.G., 2013, Two Views of Hawaiian Plume Structure: Geochemistry, Geophysics, Geosystems, v.14, p. 5308-5322, doi:10.1002/2013GC004942</p>
<ul><li>This article presents two opposing views of the source of magmas for the Hawaiian volcanoes. Both views favor a deep mantle source, but try to explain differences in isotopic compositions.</li>
</ul><p><br />Macdonald, G.A., 1968, Composition and origin of Hawaiian Lavas <em>in</em> GSA Memoirs 1968, p. 477-522</p>
<ul><li>This article provides geochemical analysis of major elements as well as determinations of minor elements of volcanic rocks from the island of Hawaii. The article describes the three major rock types - tholeitic, alkalic, and nephelinic - and concludes these rock suites are chemically intergradational and are likely derived from crystal differentiation of a single parent magma.</li>
</ul><p><br />Moore, J.G., Clague, D.A., 1992, Volcano growth and evolution of the Island of Hawaii: Geologic Society of America Bulletin, v. 104, p. 1471-1484</p>
<ul><li>This article proposes a chronologic evolution of the island of Hawaii, from where many of the suite's samples were collected.</li>
</ul>
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/.
Title
A name given to the resource
Tholeiitic Basalt
Description
An account of the resource
Hand Sample: Aphanitic vesicular dark gray-black basalt. Sample contains numerous vesicles ranging in size from 0.01cm to 1.5 cm.
Thin Section: Groundmass of aphanitic plagioclase. Plagioclase grains vary in size with some larger grains throughout sample. Numerous vesicles are present throughout thin section.
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/admin/collections/show/16">Volcanic Phenomena Suite - The Hawaiian Islands of Hawaii and Oahu</a>
Identifier
An unambiguous reference to the resource within a given context
HA-1
Spatial Coverage
Spatial characteristics of the resource.
Kiluea Volcano - Island of Hawaii
Temporal Coverage
Temporal characteristics of the resource.
1750
Date
A point or period of time associated with an event in the lifecycle of the resource
Sample collected January, 1969
-
https://dev.geosciencecollections.milne-library.org/files/original/ed1c3555ed945e377e9dd29598ad4177.jpeg
a9979075d64c31f0c3708d45f389c772
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
Hand Sample
https://dev.geosciencecollections.milne-library.org/files/original/3d2f227db113886ee73a36e5f1efeda9.jpg
1bf18f27f4c946becc3481188949a390
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
100x Magnification
https://dev.geosciencecollections.milne-library.org/files/original/552e99312842808540443890e78f87f8.jpg
21cd9d29f107f18529e905e3232488f7
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
40x Magnification
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
(HA) Volcanic Phenomena Suite -- The Hawaiian Islands of Hawaii and Oahu
Description
An account of the resource
These 31 samples comprise a collection of volcanic rocks associated with the hot-spot volcanism of the Hawaiian Islands. Samples were collected from various locations across the islands of Hawaii and Oahu. The collection contains samples of primarily tholeiitic & alkalic basalts, pumice, scoria, oceanite, and hawaiite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Date
A point or period of time associated with an event in the lifecycle of the resource
1969
Identifier
An unambiguous reference to the resource within a given context
HA-1 - HA-31
Spatial Coverage
Spatial characteristics of the resource.
Samples were collected from various locations on the islands of Hawaii and Oahu.
Temporal Coverage
Temporal characteristics of the resource.
Samples formed from Holocene eruptions of the past 300 years. Dated samples formed between 1750 and 1960.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<p><strong>Start here:<br /></strong>Macdonald, G.A., 1949, Petrography of the Island of Hawaii, U.S.G.S. Prof. Paper 214 D</p>
<ul><li>This article is a part of the general investigation of the island of Hawaii by the United States Geologic Survey. The paper describes the dominant volcanoes of the island of Hawaii (from which most of the suite's samples were collected) and describes the petrographic phenomena observed and geochemical analyses of volcanic rocks. </li>
</ul><p><strong>Additional Resources:</strong><br />Ho, R.A., Garcia, M.O., 1988, Origin of differentiated lavas at Kilauea Volcano, Hawaii; implications from the 1955 eruption: Bulletin of Volcanology, v. 50, p. 35-46.</p>
<ul><li>This article describes a study of lava flows from the 1955 eruption of the Kilauea Volcano on the island of Hawaii to evaluate models of crystal fractionation or magma mixing as the processes forming differentiated magmas. Through geochemical analyses, the study concluded that crystal fractionation resulted in the observed differentiation of lavas.</li>
</ul><p><br />Hofman, A.W., Farnetani, C.G., 2013, Two Views of Hawaiian Plume Structure: Geochemistry, Geophysics, Geosystems, v.14, p. 5308-5322, doi:10.1002/2013GC004942</p>
<ul><li>This article presents two opposing views of the source of magmas for the Hawaiian volcanoes. Both views favor a deep mantle source, but try to explain differences in isotopic compositions.</li>
</ul><p><br />Macdonald, G.A., 1968, Composition and origin of Hawaiian Lavas <em>in</em> GSA Memoirs 1968, p. 477-522</p>
<ul><li>This article provides geochemical analysis of major elements as well as determinations of minor elements of volcanic rocks from the island of Hawaii. The article describes the three major rock types - tholeitic, alkalic, and nephelinic - and concludes these rock suites are chemically intergradational and are likely derived from crystal differentiation of a single parent magma.</li>
</ul><p><br />Moore, J.G., Clague, D.A., 1992, Volcano growth and evolution of the Island of Hawaii: Geologic Society of America Bulletin, v. 104, p. 1471-1484</p>
<ul><li>This article proposes a chronologic evolution of the island of Hawaii, from where many of the suite's samples were collected.</li>
</ul>
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
Tholeiitic Basalt
Description
An account of the resource
Hand Sample: Apahanitic vesicular dark gray-black basalt. Larger (<0.05cm), light-colored crystals are visible throughout the sample. Shape of crystals ranges from elongated to square shape. Vesicles size range from 0.01cm to 0.05 cm, and have an elongated, thin shape.
Thin Section: Groundmass of aphanitic plagioclase with interstitial glass. Phenocrysts of olivine and plagioclase crystals. Numerous vesicles are present throughout thin section.
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Identifier
An unambiguous reference to the resource within a given context
HA-2
Spatial Coverage
Spatial characteristics of the resource.
Kiluea Volcano - Island of Hawaii
Sample collected on Coast Road, 3.7 miles southwest of Opihikao.
Temporal Coverage
Temporal characteristics of the resource.
Formed from flows associated with the March 28, 1995 eruption.
Is Part Of
A related resource in which the described resource is physically or logically included.
Volcanic Phenomena Suite - The Hawaiian Islands of Hawaii and Oahu
Date
A point or period of time associated with an event in the lifecycle of the resource
Sample collected January, 1969
-
https://dev.geosciencecollections.milne-library.org/files/original/f87aafc566acf52d9a0b052062a2aef6.JPG
6d32e9b18dc36b83fe3fd8c04481cdc9
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
Hand Sample
https://dev.geosciencecollections.milne-library.org/files/original/43e24a08a95357648d31ff90973c7245.jpg
69c8a1b230336972c3e4738c9da39696
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
40x Magnification
https://dev.geosciencecollections.milne-library.org/files/original/b53ff1478fc68052ed34e664a37d9d01.jpg
a6399706e4122cfdbb51b257d91407c3
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
100x Magnification
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
(HA) Volcanic Phenomena Suite -- The Hawaiian Islands of Hawaii and Oahu
Description
An account of the resource
These 31 samples comprise a collection of volcanic rocks associated with the hot-spot volcanism of the Hawaiian Islands. Samples were collected from various locations across the islands of Hawaii and Oahu. The collection contains samples of primarily tholeiitic & alkalic basalts, pumice, scoria, oceanite, and hawaiite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Date
A point or period of time associated with an event in the lifecycle of the resource
1969
Identifier
An unambiguous reference to the resource within a given context
HA-1 - HA-31
Spatial Coverage
Spatial characteristics of the resource.
Samples were collected from various locations on the islands of Hawaii and Oahu.
Temporal Coverage
Temporal characteristics of the resource.
Samples formed from Holocene eruptions of the past 300 years. Dated samples formed between 1750 and 1960.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<p><strong>Start here:<br /></strong>Macdonald, G.A., 1949, Petrography of the Island of Hawaii, U.S.G.S. Prof. Paper 214 D</p>
<ul><li>This article is a part of the general investigation of the island of Hawaii by the United States Geologic Survey. The paper describes the dominant volcanoes of the island of Hawaii (from which most of the suite's samples were collected) and describes the petrographic phenomena observed and geochemical analyses of volcanic rocks. </li>
</ul><p><strong>Additional Resources:</strong><br />Ho, R.A., Garcia, M.O., 1988, Origin of differentiated lavas at Kilauea Volcano, Hawaii; implications from the 1955 eruption: Bulletin of Volcanology, v. 50, p. 35-46.</p>
<ul><li>This article describes a study of lava flows from the 1955 eruption of the Kilauea Volcano on the island of Hawaii to evaluate models of crystal fractionation or magma mixing as the processes forming differentiated magmas. Through geochemical analyses, the study concluded that crystal fractionation resulted in the observed differentiation of lavas.</li>
</ul><p><br />Hofman, A.W., Farnetani, C.G., 2013, Two Views of Hawaiian Plume Structure: Geochemistry, Geophysics, Geosystems, v.14, p. 5308-5322, doi:10.1002/2013GC004942</p>
<ul><li>This article presents two opposing views of the source of magmas for the Hawaiian volcanoes. Both views favor a deep mantle source, but try to explain differences in isotopic compositions.</li>
</ul><p><br />Macdonald, G.A., 1968, Composition and origin of Hawaiian Lavas <em>in</em> GSA Memoirs 1968, p. 477-522</p>
<ul><li>This article provides geochemical analysis of major elements as well as determinations of minor elements of volcanic rocks from the island of Hawaii. The article describes the three major rock types - tholeitic, alkalic, and nephelinic - and concludes these rock suites are chemically intergradational and are likely derived from crystal differentiation of a single parent magma.</li>
</ul><p><br />Moore, J.G., Clague, D.A., 1992, Volcano growth and evolution of the Island of Hawaii: Geologic Society of America Bulletin, v. 104, p. 1471-1484</p>
<ul><li>This article proposes a chronologic evolution of the island of Hawaii, from where many of the suite's samples were collected.</li>
</ul>
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
Volcanic Bomb
Description
An account of the resource
Hand Sample: Imperfect volcanic bomb. Aphanitic with reddish brown color. Observed mudcrack texture of surface likely formed due to weathering. Sample contains abundant vesicles (< 0.05cm in size).
Thin Section: Opaque groundmass with numerous vesicles. Phenocrysts of amphiboles are present.
Contributor
An entity responsible for making contributions to the resource
Western Minerals
Identifier
An unambiguous reference to the resource within a given context
HA-3
Spatial Coverage
Spatial characteristics of the resource.
Kapoho, Kiluea - Island of Hawaii
Temporal Coverage
Temporal characteristics of the resource.
1960
Is Part Of
A related resource in which the described resource is physically or logically included.
Volcanic Phenomena Suite - The Hawaiian Islands of Hawaii and Oahu
Date
A point or period of time associated with an event in the lifecycle of the resource
Sample collected January, 1969
-
https://dev.geosciencecollections.milne-library.org/files/original/47a6d330857ea6831be106301f8959df.jpeg
de05777d511ddf0f1c0e81bb7542fcd7
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
Hand Sample
https://dev.geosciencecollections.milne-library.org/files/original/fb49d0ee6d3c83d5a10eb634f88cfe9f.jpg
17242ae42230c003418ca38f6601f589
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
100x Magnification
https://dev.geosciencecollections.milne-library.org/files/original/c7a7b84e9c0b738699b8fdb1761821e1.jpg
d6fba604dccb920d23546f29ef4c2a88
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
40x Magnification
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
(HA) Volcanic Phenomena Suite -- The Hawaiian Islands of Hawaii and Oahu
Description
An account of the resource
These 31 samples comprise a collection of volcanic rocks associated with the hot-spot volcanism of the Hawaiian Islands. Samples were collected from various locations across the islands of Hawaii and Oahu. The collection contains samples of primarily tholeiitic & alkalic basalts, pumice, scoria, oceanite, and hawaiite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Date
A point or period of time associated with an event in the lifecycle of the resource
1969
Identifier
An unambiguous reference to the resource within a given context
HA-1 - HA-31
Spatial Coverage
Spatial characteristics of the resource.
Samples were collected from various locations on the islands of Hawaii and Oahu.
Temporal Coverage
Temporal characteristics of the resource.
Samples formed from Holocene eruptions of the past 300 years. Dated samples formed between 1750 and 1960.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<p><strong>Start here:<br /></strong>Macdonald, G.A., 1949, Petrography of the Island of Hawaii, U.S.G.S. Prof. Paper 214 D</p>
<ul><li>This article is a part of the general investigation of the island of Hawaii by the United States Geologic Survey. The paper describes the dominant volcanoes of the island of Hawaii (from which most of the suite's samples were collected) and describes the petrographic phenomena observed and geochemical analyses of volcanic rocks. </li>
</ul><p><strong>Additional Resources:</strong><br />Ho, R.A., Garcia, M.O., 1988, Origin of differentiated lavas at Kilauea Volcano, Hawaii; implications from the 1955 eruption: Bulletin of Volcanology, v. 50, p. 35-46.</p>
<ul><li>This article describes a study of lava flows from the 1955 eruption of the Kilauea Volcano on the island of Hawaii to evaluate models of crystal fractionation or magma mixing as the processes forming differentiated magmas. Through geochemical analyses, the study concluded that crystal fractionation resulted in the observed differentiation of lavas.</li>
</ul><p><br />Hofman, A.W., Farnetani, C.G., 2013, Two Views of Hawaiian Plume Structure: Geochemistry, Geophysics, Geosystems, v.14, p. 5308-5322, doi:10.1002/2013GC004942</p>
<ul><li>This article presents two opposing views of the source of magmas for the Hawaiian volcanoes. Both views favor a deep mantle source, but try to explain differences in isotopic compositions.</li>
</ul><p><br />Macdonald, G.A., 1968, Composition and origin of Hawaiian Lavas <em>in</em> GSA Memoirs 1968, p. 477-522</p>
<ul><li>This article provides geochemical analysis of major elements as well as determinations of minor elements of volcanic rocks from the island of Hawaii. The article describes the three major rock types - tholeitic, alkalic, and nephelinic - and concludes these rock suites are chemically intergradational and are likely derived from crystal differentiation of a single parent magma.</li>
</ul><p><br />Moore, J.G., Clague, D.A., 1992, Volcano growth and evolution of the Island of Hawaii: Geologic Society of America Bulletin, v. 104, p. 1471-1484</p>
<ul><li>This article proposes a chronologic evolution of the island of Hawaii, from where many of the suite's samples were collected.</li>
</ul>
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/.
Title
A name given to the resource
Basaltic Spatter
Description
An account of the resource
Hand Sample: On cut face, aphanitic, gray basalt with light colored phaneritic crystals (~0.1 cm in size). Subparallel fractures noted across sample. Exterior of sample has been heavily weathered, resulting in the red and orange discoloration.
Thin Section: Groundmass of aphanitic plagioclase. Some larger plagioclase grains are found throughout the sample in addition to some olivine phenocrysts. Vesicles are present throughout sample.
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.
Volcanic Phenomena Suite - The Hawaiian Islands of Hawaii and Oahu
Identifier
An unambiguous reference to the resource within a given context
HA-4
Spatial Coverage
Spatial characteristics of the resource.
Kileau Volcano - Island of Hawaii
Collected a few feet below the top of the cone near Kapoho, Kileau.
Temporal Coverage
Temporal characteristics of the resource.
1960
Date
A point or period of time associated with an event in the lifecycle of the resource
Sample collected January, 1969
-
https://dev.geosciencecollections.milne-library.org/files/original/d79b89e69bb1b31f0d459e59eeedf124.jpeg
99bef948f788463b8fb8bd99f4be376c
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
Hand Sample
https://dev.geosciencecollections.milne-library.org/files/original/e26f6223ffa03d1e56a6793df356b3f6.jpeg
14423fae1e84f277fcf2e977901f3935
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
Hand Sample
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
(HA) Volcanic Phenomena Suite -- The Hawaiian Islands of Hawaii and Oahu
Description
An account of the resource
These 31 samples comprise a collection of volcanic rocks associated with the hot-spot volcanism of the Hawaiian Islands. Samples were collected from various locations across the islands of Hawaii and Oahu. The collection contains samples of primarily tholeiitic & alkalic basalts, pumice, scoria, oceanite, and hawaiite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Date
A point or period of time associated with an event in the lifecycle of the resource
1969
Identifier
An unambiguous reference to the resource within a given context
HA-1 - HA-31
Spatial Coverage
Spatial characteristics of the resource.
Samples were collected from various locations on the islands of Hawaii and Oahu.
Temporal Coverage
Temporal characteristics of the resource.
Samples formed from Holocene eruptions of the past 300 years. Dated samples formed between 1750 and 1960.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<p><strong>Start here:<br /></strong>Macdonald, G.A., 1949, Petrography of the Island of Hawaii, U.S.G.S. Prof. Paper 214 D</p>
<ul><li>This article is a part of the general investigation of the island of Hawaii by the United States Geologic Survey. The paper describes the dominant volcanoes of the island of Hawaii (from which most of the suite's samples were collected) and describes the petrographic phenomena observed and geochemical analyses of volcanic rocks. </li>
</ul><p><strong>Additional Resources:</strong><br />Ho, R.A., Garcia, M.O., 1988, Origin of differentiated lavas at Kilauea Volcano, Hawaii; implications from the 1955 eruption: Bulletin of Volcanology, v. 50, p. 35-46.</p>
<ul><li>This article describes a study of lava flows from the 1955 eruption of the Kilauea Volcano on the island of Hawaii to evaluate models of crystal fractionation or magma mixing as the processes forming differentiated magmas. Through geochemical analyses, the study concluded that crystal fractionation resulted in the observed differentiation of lavas.</li>
</ul><p><br />Hofman, A.W., Farnetani, C.G., 2013, Two Views of Hawaiian Plume Structure: Geochemistry, Geophysics, Geosystems, v.14, p. 5308-5322, doi:10.1002/2013GC004942</p>
<ul><li>This article presents two opposing views of the source of magmas for the Hawaiian volcanoes. Both views favor a deep mantle source, but try to explain differences in isotopic compositions.</li>
</ul><p><br />Macdonald, G.A., 1968, Composition and origin of Hawaiian Lavas <em>in</em> GSA Memoirs 1968, p. 477-522</p>
<ul><li>This article provides geochemical analysis of major elements as well as determinations of minor elements of volcanic rocks from the island of Hawaii. The article describes the three major rock types - tholeitic, alkalic, and nephelinic - and concludes these rock suites are chemically intergradational and are likely derived from crystal differentiation of a single parent magma.</li>
</ul><p><br />Moore, J.G., Clague, D.A., 1992, Volcano growth and evolution of the Island of Hawaii: Geologic Society of America Bulletin, v. 104, p. 1471-1484</p>
<ul><li>This article proposes a chronologic evolution of the island of Hawaii, from where many of the suite's samples were collected.</li>
</ul>
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/.
Title
A name given to the resource
Pumice
Description
An account of the resource
Hand Sample: Glassy, dark gray, vesicular pumice. The sample contains many small pieces of the pumice, ranging from 0.03cm to 1.5cm in diameter. Chunks of glassy pumice and volcanic ash compose sample.
No Thin Sections of this sample
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://www.geosciencecollections.milne-library.org/collections/show/656">Volcanic Phenomena Suite - The Hawaiian Islands of Hawaii and Oahu<br /></a>
Identifier
An unambiguous reference to the resource within a given context
HA-5
Spatial Coverage
Spatial characteristics of the resource.
SE of main vent of Kileau Volcano - Island of Hawaii
Temporal Coverage
Temporal characteristics of the resource.
Samples represent February 13, 16, and 18 eruption, 1960.
Date
A point or period of time associated with an event in the lifecycle of the resource
Sample collected January, 1969
-
https://dev.geosciencecollections.milne-library.org/files/original/8f2731c6215ad2f42406300a5e28fb00.JPG
2cc10aba5ea46e52f5115e957dcaba7e
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
Hand Sample
https://dev.geosciencecollections.milne-library.org/files/original/3d06f69573be2b38894b70e03e6d0f03.jpg
ca6adcb81697651c28e00110bb07a676
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
100x Magnification
https://dev.geosciencecollections.milne-library.org/files/original/eab74bce0b77fbe5ba09de1925d3254f.jpg
2e200ad9806ceac66be4e81e7bfb2542
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
40x Magnification
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
(HA) Volcanic Phenomena Suite -- The Hawaiian Islands of Hawaii and Oahu
Description
An account of the resource
These 31 samples comprise a collection of volcanic rocks associated with the hot-spot volcanism of the Hawaiian Islands. Samples were collected from various locations across the islands of Hawaii and Oahu. The collection contains samples of primarily tholeiitic & alkalic basalts, pumice, scoria, oceanite, and hawaiite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals, Inc.
Date
A point or period of time associated with an event in the lifecycle of the resource
1969
Identifier
An unambiguous reference to the resource within a given context
HA-1 - HA-31
Spatial Coverage
Spatial characteristics of the resource.
Samples were collected from various locations on the islands of Hawaii and Oahu.
Temporal Coverage
Temporal characteristics of the resource.
Samples formed from Holocene eruptions of the past 300 years. Dated samples formed between 1750 and 1960.
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals, Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<p><strong>Start here:<br /></strong>Macdonald, G.A., 1949, Petrography of the Island of Hawaii, U.S.G.S. Prof. Paper 214 D</p>
<ul><li>This article is a part of the general investigation of the island of Hawaii by the United States Geologic Survey. The paper describes the dominant volcanoes of the island of Hawaii (from which most of the suite's samples were collected) and describes the petrographic phenomena observed and geochemical analyses of volcanic rocks. </li>
</ul><p><strong>Additional Resources:</strong><br />Ho, R.A., Garcia, M.O., 1988, Origin of differentiated lavas at Kilauea Volcano, Hawaii; implications from the 1955 eruption: Bulletin of Volcanology, v. 50, p. 35-46.</p>
<ul><li>This article describes a study of lava flows from the 1955 eruption of the Kilauea Volcano on the island of Hawaii to evaluate models of crystal fractionation or magma mixing as the processes forming differentiated magmas. Through geochemical analyses, the study concluded that crystal fractionation resulted in the observed differentiation of lavas.</li>
</ul><p><br />Hofman, A.W., Farnetani, C.G., 2013, Two Views of Hawaiian Plume Structure: Geochemistry, Geophysics, Geosystems, v.14, p. 5308-5322, doi:10.1002/2013GC004942</p>
<ul><li>This article presents two opposing views of the source of magmas for the Hawaiian volcanoes. Both views favor a deep mantle source, but try to explain differences in isotopic compositions.</li>
</ul><p><br />Macdonald, G.A., 1968, Composition and origin of Hawaiian Lavas <em>in</em> GSA Memoirs 1968, p. 477-522</p>
<ul><li>This article provides geochemical analysis of major elements as well as determinations of minor elements of volcanic rocks from the island of Hawaii. The article describes the three major rock types - tholeitic, alkalic, and nephelinic - and concludes these rock suites are chemically intergradational and are likely derived from crystal differentiation of a single parent magma.</li>
</ul><p><br />Moore, J.G., Clague, D.A., 1992, Volcano growth and evolution of the Island of Hawaii: Geologic Society of America Bulletin, v. 104, p. 1471-1484</p>
<ul><li>This article proposes a chronologic evolution of the island of Hawaii, from where many of the suite's samples were collected.</li>
</ul>
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
Iridescent Pahoehoe
Description
An account of the resource
Hand Sample: Dark gray, vesicular, glassy sample. Sample surface has a ropey texture with vesicles ranging from 0.01cm to 2.5cm in diameter. Sample has an iridescent luster on unweathered surfaces.
Thin Section: Aphanitic opaque groundmass with phenocrysts of amphiboles, plagioclase, and olivine. Vesicles are abundant throughout thin section.
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://www.geosciencecollections.milne-library.org/collections/show/656">Volcanic Phenomena Suite - The Hawaiian Islands of Hawaii and Oahu</a>
Identifier
An unambiguous reference to the resource within a given context
HA-6
Temporal Coverage
Temporal characteristics of the resource.
1960
Spatial Coverage
Spatial characteristics of the resource.
Kiluea Volcano - Island of Hawaii
Maximum extent of eastern flow from main vent.
Date
A point or period of time associated with an event in the lifecycle of the resource
Sample collected January, 1969