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Geologic Names of the U.S., Territories and Possessions, USGS

Abstract: 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.
Geographic Coverage
Spatial coordinates   
  N: 50.0   S: 25.0   E: -66.0   W: -125.0

Data Set Citation
Dataset Title: National Geologic Map Database, GEOLEX
Dataset Publisher: National Cooperative Geologic Mapping Program , USGS
Version: Not provided
Online Resource:
Temporal Coverage
Start Date: 1800-01-01
Data Center
National Geologic Map Database, Geological Division, U.S. Geological Survey, U.S. Department of the Interior Supplemental Info
Data Center URL:

Data Center Personnel
Phone: (703) 648-6907
Fax: (703) 648-6977
Email: drsoller at
Contact Address:
U.S. Geological Survey
National Geologic Map Database
902 National Center
City: Reston
Province or State: VA
Postal Code: 20192
Country: USA
Distribution Media: on-line
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 1970-01-01
Last DIF Revision Date: 2018-07-02