Usage:
No current usage.
(†/Parkers Formation (IN) considered invalid.)
[Name is a variation of the name Parker, used for the coal, black sheety shale, and limestone of upper part of the formation by Fuller and Clapp (1904).]
Geologic age:
Pennsylvanian, Late
Type section, locality, area and/or origin of name:
Named from Parkers Settlement in eastern Posey Co., southwestern IN, about 8 mi northwest of Evansville on State Road 66 (Malott, 1947).
AAPG geologic province:
Illinois 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 ([ ]).