Usage:
Alkali Gulch production interval (informal) of Paradox Member of Hermosa Formation (CO,UT)
Alkali Gulch cycle (informal) in Paradox Formation of Hermosa Group (CO,UT)
Alkali Gulch Formation of Paradox Group (CO,UT)
For informal usage, the rank or lithologic term should not be capitalized.
Subunits:
informal Cane Creek shale (CO,UT).
Geologic age:
Middle Pennsylvanian (Desmoinesian)
Type section, locality, area and/or origin of name:
Type area (subsurface): Aneth area to Lisbon area, Paradox basin, San Juan Co., UT (Northrop, 1973).
AAPG geologic province:
Paradox 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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).