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National Geologic Map Database

Geologic Unit: Gypsum Spring

Usage:

Gypsum Spring Formation (MT*,SD*,WY*)
Gypsum Spring Member of Twin Creek Limestone (ID*,UT*,WY*)


Subunits:

Kendall Sandstone Member (WY).


Geologic age:

Jurassic, Middle*
Bajocian, early*
Bajocian, middle*


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

Not designated. Named from exposures near a gypsum spring on Red Creek, Fremont Co., WY (Love, 1939).


AAPG geologic province:

Uinta uplift*
Uinta basin*
Wasatch uplift*
Green River basin*
Snake River basin*
Yellowstone province*
Wind River basin*
Powder River basin*


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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).