Usage:
Chiulos Member of Great Blue Formation (UT*)
Geologic age:
late Middle to Late Mississippian (late Visean to Serpukhovian; Chesterian)*
Type section, locality, area and/or origin of name:
Type section: measured on west limb of syncline southeast of Chiulos Canyon, near Tintic Davis shaft, in S/2 SE/4 sec. 30 and N/2 NE/4 sec. 31, T. 9 S., R. 2 W., North Tintic district, Utah Co., western UT (Morris and Lovering, 1961).
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 ([ ]).