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National Geologic Map Database

Geologic Unit: Curtis

Usage:

Curtis Formation of San Rafael Group (CO*,UT*)
Curtis Member of Stump Formation (CO*,ID*,UT*,WY*)


Geologic age:

Middle Jurassic (middle Callovian)*


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

Type section: Curtis Point, in sec. 34, T. 19 S., R. 13 E., Emery Co., UT (Gilluly and Reeside, 1928).


AAPG geologic province:

Green River basin*
Paradox basin*
Plateau sedimentary province*
Snake River basin*
Uinta uplift*
Wasatch uplift*
Yellowstone 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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).