Usage:
Snake Creek Formation of Ogallala Group (NE-recognized locally in type area)
Subunits:
(alphabetical) --all in NE: /Johnson Member, Laucomer Member, Murphy Member.
Geologic age:
late Tertiary (middle to late Miocene; Clarendonian to Hemphillian NALMA)
Type section, locality, area and/or origin of name:
Type locality: on top of Matthew's (Amer. Mus. Nat. Hist. Bull., v. 50, art. 2, 1924, p. 63, fig. 1) "Olcott Hill," in NE/4 SW/4 SE/4 sec. 3, T. 25 N., R. 55 W., [University Lake NW 7.5-min quadrangle], Sioux Co., northwestern NE (Skinner and others, 1977).
Named from occurrence on Snake Creek, Sioux Co., NE (Matthew and Cook, 1909).
AAPG geologic province:
Denver 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 ([ ]).