Usage:
Muddy Creek Formation (AZ*,CA*,NV*,UT*)
Subunits:
(alphabetical): Fortification Basalt Member (AZ*,NV*), Hualapai Limestone Member (AZ).
Geologic age:
Tertiary*
Miocene*
Pliocene*
Type section, locality, area and/or origin of name:
Not designated. Named from Muddy Creek, Clark Co., NV (Longwell, 1928).
AAPG geologic province:
Great Basin province*
Plateau sedimentary 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 ([ ]).