Thurman Sandstone of Cabaniss Group (OK*)
Pennsylvanian*
Named from former village of Thurman, McAlester coal district, McAlester quadrangle, northern part of Pittsburg Co., (about 6 mi west of Indianola), which is near if not on outcrops of the formation (Taff, 1899).
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 ([ ]).