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#1 Federal
Zircon U-Pb data for volcanic ash beds in the Barstow Formation, California probe data 2022
- Organization: Department of the Interior
- Dataset Last Updated: April 13, 2022 at 12:00 AM
Zircon grains separated from altered ash beds were analyzed to better understand the ages of beds. Isotopic analyses for U-Pb geochronology and trace element geochemistry were performed...
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Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 09:14 PM
#2 Federal
Data release for Geologic Map of the Poncha Pass Area, Chaffee, Fremont, and Saguache Counties, Colorado
- Organization: Department of the Interior
- Dataset Last Updated: August 29, 2022 at 12:00 AM
This release presents the GIS data (in GDB, shapefile, and e00 [coverage] formats) and metadata for a 1:24,000-scale geologic map of the Poncha Pass area in central Colorado. A...
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- XML
Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 09:11 PM

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