Usage:
Clarita Formation (OK)
Clarita Member of Chimneyhill Limestone (OK)
Clarita Formation of /Chimneyhill subgroup [informal] of Hunton Group (OK)
["Subgroup" not recognized as a formal stratigraphic rank term (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). Chimneyhill subgroup considered informal and should not be capitalized.]
Subunits:
FORMATION STATUS (alphabetical) --all in OK: Fitzhugh Member, Prices Falls Member.
Geologic age:
early Silurian
Type section, locality, area and/or origin of name:
Type locality: about 3 mi west of Clarita, Coal Co., in vicinity of old Hunton townsite, in NW/4 sec. 8, T. 1 S., R. 8 E. This is not the same as type locality designated for the Dillard (Amsden, 1957).
AAPG geologic province:
South Oklahoma folded belt
Arkoma 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 ([ ]).