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National Geologic Map Database

Geologic Unit: Butterly

Usage:

Butterly Dolomite of Arbuckle Group (OK*)


Geologic age:

Early Ordovician (Tremadocian)*


Type section, locality, area and/or origin of name:

Type section: East side of U.S. Highway 77, in sec. 18, T. 2 S., R. 2 E., southeast of Chapman Ranch buildings [Murray Co.] southeastern OK. Named from ranches owned by John Butterly and Butterly brothers at southeast end of West Timbered Hills, in secs. 28 and 29, T. 1 S., R. 1 E. (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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).