Usage:
Cedarton Shale Member of Graford Formation of Canyon Group (TX*)
Cedarton Shale Member of Brookesmith Formation of Canyon Group (TX)
Cedarton Shale of Canyon Group (TX)
Geologic age:
Late Pennsylvanian (Missourian)*
Type section, locality, area and/or origin of name:
Named from Cedarton, Brown Co., Colorado River region, central TX. Notable exposures about 3 mi south of Jim Ned Creek and Willis Creek-Cedarton area (Drake, 1893; Plummer and Moore, 1922).
AAPG geologic province:
Bend arch*
Llano uplift
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 ([ ]).