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National Geologic Map Database

Geologic Unit: Amargosa

Usage:

Amargosa Alloformation of Lake Tecopa Allogroup (CA)


Geologic age:

Quaternary (late Pleistocene)


Type section, locality, area and/or origin of name:

Type area: area of ancient Lake Tecopa, eastern Mojave Desert, in vicinity of Amargosa River and towns of Shoshone and Tecopa [Lat. 36 deg. 00 min. N., Long. 116 deg. 15 min. W.], Inyo Co., east-central CA. Origin of name not stated by author (Morrison, 1991).


AAPG geologic province:

Great Basin province


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).