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• Organization: Department of the Interior
• Updated: 20200820 | Harvested: July 16, 2025 at 03:24 PM

The Archean Stillwater Complex, a layered ultramafic-to-mafic intrusion, is exposed along the northern side of the Beartooth Mountains in Montana. To the north of the Stillwater outcrops, a...

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• Organization: Department of the Interior
• Updated: 20210915 | Harvested: July 16, 2025 at 01:50 PM

This dataset includes photographic images of thin sections made from xenolith samples collected from the Sliderock Mountain and Susie Peak plutons, Montana, along with a shapefile representing the...

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• Organization: Department of the Interior
• Updated: 20240801 | Harvested: July 16, 2025 at 01:50 AM

This dataset includes thin section images, automated mineralogy mineral maps, whole-rock geochemical data, and whole-rock Nd-Sr-Pb isotopic analysis of samples collected from nine mafic-ultramafic...

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• Organization: Department of the Interior
• Updated: 20250225 | Harvested: August 06, 2025 at 06:36 PM

The database for the Washington West 30- by 60-minute quadrangle covers an area of approximately 4,884 square kilometers (1,343 square miles) in and west of the Washington, D.C., metropolitan...

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• Organization: Department of the Interior
• Updated: 20220310 | Harvested: July 16, 2025 at 11:12 AM

The database for the Preliminary Geologic Map of the Cherry Hill Quadrangle, Dinwiddie, Sussex, and Greensville Counties, Virginia geographically straddles the Coastal Plain and Piedmont Provinces...

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• Organization: Department of the Interior
• Updated: 20250430 | Harvested: September 05, 2025 at 08:29 PM

The database for the geologic map of the Frederick 30 x 60 quadrangle covers the distinct geologic provinces and sections of the central Appalachian region that are defined by unique bedrock and...

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