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

Geologic Unit: Bluefield

Usage:

Bluefield Formation (KY*,VA*,WV*)
Bluefield Formation of Mauch Chunk Group (VA*,WV*)
Bluefield Shale (VA*)
Bluefield Formation of Pennington Group (KY)


Subunits:

(alphabetical): Ada Shale Member (VA,WV), Bickett Shale Member (VA,WV), Droop Sandstone Member (VA,WV), Glenray Limestone Member (VA,WV), Indian Mills Sandstone Member (VA*,WV*), Lillydale Shale Member (VA,WV), Possumtrot Shale Member (VA,WV), Reynolds Limestone Member (WV), Talcott Shale Member (WV), Webster Springs Sandstone Member (WV).


Geologic age:

Middle to Late Mississippian (Visean to Serpukhovian; Chesterian)*


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

Named from exposures at Bluefield, Mercer Co., southern WV (US geologic names lexicons, USGS Bull. 896, 1200).


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 ([ ]).