Usage:
Fort Sill Limestone of Arbuckle Group (OK*)
Geologic age:
Late Cambrian*
Type section, locality, area and/or origin of name:
Named for exposures in a small quarry on Fort Sill Military Reservation on east side of the highway between Fort Sill and Lawton, in SE/4 sec. 8 [projected], T. 2 N., R. 11 W., [Comanche Co., southern OK]; only 40 ft of formation exposed. A complete section of formation is found about 6 mi west of Fort Sill and 1 mi south of Signal Mountain, in sec. 7, T. 2 N., R. 12 W., [Comanche Co., southern OK] (Ulrich, 1932).
Type section: on McKenzie Hill, in secs. 7 and 8, T. 2 N., R. 12 W., Comanche Co., southern OK (Ulrich, 1932; Decker, 1939).
AAPG geologic province:
South Oklahoma folded belt*
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 ([ ]).