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National Geologic Map Database

Geologic Unit: Pittsburgh

Usage:

Pittsburgh Formation of Monongahela Group (PA*)


Subunits:

Redstone Member (PA*), Fishpot Member (PA*), Sewickley Member (PA*)


Geologic age:

Pennsylvanian, Late*


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

Type area: area of Pittsburgh, southwestern PA (Rogers, 1858).
Reference section: West of Elco, along north bank of Monongahela River and in banks of PA Highway 88, Washington Co., PA (Berryhill and Swanson, 1962).


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 ([ ]).