- Usage in publication:
-
- Creta Dolomite Bed
- Modifications:
-
- Revised
- AAPG geologic province:
-
- Anadarko basin
- Palo Duro basin
- South Oklahoma folded belt
Summary:
Reduced in stratigraphic rank from member of Blaine Formation. Revised as a bed in the Elm Fork Member (first used) of Blaine Formation of El Reno Group. Is 1.1 ft thick unit of pale yellow-gray pelletoidal dolomite at its type locality where it overlies Cedartop Gypsum Bed of Elm Fork and underlies Collingsworth Gypsum Bed. Overlies unnamed gray-green and red-brown shale at most localities. Usually 1-2 ft thick; ranges between 0.5 to 8.0 ft thick. Present in sections measured in Harmon and Jackson Cos (Palo Duro basin), in Beckham Co (Anadarko basin), and Greer Co (S. Oklahoma folded belt province). Cross sections. Permian age.
Source: GNU records (USGS DDS-6; Denver GNULEX).
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 ([ ]).