Geologic Names of the U.S., Territories and Possessions, USGS
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资源简介：
The data base contains an annotated index lexicon of formal geologic nomenclature of the United States, territories, and possessions, with data on location, geologic age, U.S. Geological Survey usage, lithology, geologic province, thickness at type section, location of type section, and naming reference for each geologic unit.
