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National Geologic Map Database

Geologic Unit: Dave Branch

Usage:

Dave Branch shale member (informal) of Grundy Formation of Breathitt Group (KY)

Informal. The rank or lithologic term should not be capitalized.


Geologic age:

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


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

Type section: spillway cut at the Laurel River Dam, near Dave Branch, Sawyer quadrangle, Whitley Co., KY. Carter coordinate location is 12-F-63, 3,300 [ft] from south line and 400 [ft] from east line (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 ([ ]).