Gillette

quadrangle 1:250,000 scale
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Sundance (2 items)

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Lithogeochemistry and images of selected drill core samples from the Mineral Hill alkaline complex, Wyoming

Geochemical analysis, photographs and micrographs of rock samples and drill core materials from this area. Data are provided in CSV, images in JPEG format.

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Map showing geology, structure, and geophysics of the central Black Hills, South Dakota

This 1:100,000-scale digital geologic map details the complex early Proterozoic granitic rocks, early Proterozoic supracrustal metamorphic rocks, and Archean crystalline basement of the Black Hills.

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