Phelps, Geoffrey A.

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Preliminary gravity inversion model of Frenchman Flat basin, Nevada Test Site, Nevada

The depth of the basin beneath Frenchman Flat is estimated using a gravity inversion method. This dataset is distributed as an XYZ ASCII format data file generated from the 2002 gravity inversion model of the bedrock beneath Frenchman Flat basin. Data fo

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Preliminary quaternary geologic maps of Santa Clara Valley, Santa Clara, Alameda, and San Mateo counties, California: A digital database

This digital map database, which is compiled from previously unpublished and open-filed U.S. Geol. Survey reports (Wesling and Helley, 1989), represents the general distribution and identity of Quaternary deposits in eight 7.5 minute quadrangles in the

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Preliminary geologic map of the Little Piute Mountains, California: A digital database

The Little Piute Mountains in the eastern Mojave Desert expose a series of folds and thrust faults involving metamorphosed Paleozoic strata (Miller and others, 1982; Stone and others, 1983). The Little Piute Mountains Digital database contains digital ge

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