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Argon and geochemical data for: 40Ar/39Ar geochronology and petrogenesis of the Table Mountain Shoshonites, Golden, CO
Observational data supporting Argon-Argon geochronological analysis, along with geochemical analyses of basalt samples from this area. Data are provided in CSV format. |
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Argon data for enriched MORB from the 8° 20' N seamount chain
Geochronological data from a 40Ar/39Ar analysis of mid-ocean ridge basalt material obtained from this area.to understand the volcanic history of the area. Data are provided in CSV format. |
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| Bedrock geologic map of the Ashland and the northern part of the Ironwood 30 min X 60 min quadrangles, Wisconsin and Michigan | Info |
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Data to accompany U.S. Geological Survey Data Series 1099: Petrographic, geochemical and geochronologic data for Cenozoic volcanic rocks of the Tonopah, Divide, and Goldfield Mining Districts, Nevada
Geochemical, petrographic, and geochronologic data for samples, principally those of unmineralized Tertiary volcanic rocks, from the Tonopah, Divide, and Goldfield mining districts of west-central Nevada. |
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Geochemical and petrographic data for intrusions peripheral to the Big Timber Stock, Crazy Mountains, Montana
The Paleocene Fort Union Formation hosts a compositionally diverse array of Eocene plugs, dikes, and sills arrayed around the Eocene Big Timber stock in the Crazy Mountains of south-central Montana. The geochemistry and petrography of the sills have no |
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Geochemical database for igneous rocks of the ancestral Cascades Arc--southern segment, California and Nevada
Compilation of all available chemical data (more than 2,000 samples) for igneous rocks that constitute the southern segment of the ancestral Cascades magmatic arc. |
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Natural aggregates of the conterminous United States
Geologic occurrence of potential sources of crushed stone and sand and gravel for use as natural aggregate. A summary of the natural aggregate industry is also included. Data are provided in Shapefile format. |
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