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 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 ([ ]).