Usage:
Blue Hill Member of Carlile Shale (CO*,KS*,MN*,NE*,NM*,SD*)
Blue Hill Shale (KS)
Subunits:
FORMATION STATUS: Saline Valley Member (KS).
Geologic age:
Late Cretaceous*
Type section, locality, area and/or origin of name:
Apparently named from Blue Hills in Mitchell, Russell, and Republic Cos., north-central KS, and probably also Blue Hill Twp., Mitchell Co. (Logan, 1897; Wilmarth, 1938).
AAPG geologic province:
Central Kansas uplift*
Denver basin*
Las Vegas-Raton basin*
Salina basin*
Sioux uplift*
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 ([ ]).