Usage:
Lake Tecopa Allogroup (CA)
Subunits:
(alphabetical) --all in CA: Amargosa Alloformation, Greenwater Fan Alloformation, Shoshone Springs Alloformation, Spanish Trail Alloformation.
Geologic age:
Tertiary
Miocene, late
Pliocene
Quaternary
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 (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 ([ ]).