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Geologic Names Lexicon

Alternate Title:
GEOLEX Lexicon of Geologic Names of the United States

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Database available without restriction Database available without restriction
U.S. Geological Survey
U.S. Geological Survey
1836 - Present
Frequency of Updates:

The Geologic Names Lexicon (GEOLEX) is a catalog of the named geologic units in the United States. It contains information on unit names that were published in the various editions of the U.S. Geological Survey's Lexicon of Geologic Names. The database contains information on over 16,000 geologic units state geological surveys and the USGS. GEOLEX provides information on the original and current description of the unit, the type locality, geologic age, geographic extent, variations in geologic name usage, and publications that have described the unit.

Number of Users:
Interlibrary Loan:
Not Permitted
Resource Advocate:
Malcomb, J.
SFX Source:
Federated Search:

IUB Library Subjects:
  • Geological Sciences

Library of Congress Subjects:

Geology, Stratigraphic--Nomenclature--United States.
Geology, Stratigraphic--Nomenclature--United States--Territories and possessions.
Geology--United States--Nomenclature.
Geology--United States--Territories and possessions--Nomenclature.