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National Geologic Map Database

Geologic Unit: Maccrady

Usage:

Maccrady Shale (KY*,VA*,WV*)
Maccrady Formation (TN,VA)
Maccrady Member of Grainger Formation (KY*,VA*)


Geologic age:

Early to Middle Mississippian (Tournaisian to Visean; Osagean)


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

Best section measured at Maccrady, [2 mi northeast of Saltville, Smyth Co.], southwestern VA (Stose, 1913).


AAPG geologic province:

Appalachian basin*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 ([ ]).