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