U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Partridge

Usage:

Partridge shale member (informal) of Grundy Formation of Breathitt Group (KY)
Notable exposures in Big Sandy district.


Geologic age:

late Early Pennsylvanian (Bashkirian; Westphalian A; late Morrowan)


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

[Notable exposures in Big Sandy district, eastern KY. Type locality not designated. Origin of name not stated by author (Chesnut, 1991).]


AAPG geologic province:

Appalachian 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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).