McGrath

1:250,000 Alaska quadrangle
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Geologic map of central (interior) Alaska

Geologic map and associated digital databases of central Alaska. Compilation and reinterpretation of previously published and unpublished mapping at 1:250,000 scale, with limited 1:125,000 and 1:63,360 scale mapping.

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Stream-sediment samples reanalyzed for major, rare earth, and trace elements from seven 1:250,000-scale quadrangles, south-central Alaska, 2007-09

New analyses of 1,075 previously collected stream sediment samples, measuring more elements with better precision. Includes arsenic, gold, palladium, and platinum and 55 major, rare earth, and trace element concentrations.

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Chemical analysis of archived stream-sediment samples, Alaska

Geochemical data for more than 1,500 archived stream-sediment samples and accompanying quality control samples.

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Data from the chemical analysis of archived stream-sediment samples, Alaska

Elemental concentration data for more than 1700 archived stream-sediment samples collected in Alaska.

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