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National Geologic Map Database

Geologic Unit: Snyder

Usage:

Snyder Limestone of Black River Group (PA*,VA,WV)
Snyder Formation (PA*)
Snyder Member of Brenner Limestone (PA)


Geologic age:

Late Ordovician (Mohawkian; Turinian)*


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

Type section: Pennsylvania Railroad cut, Union Furnace, Huntingdon Co., PA. Named from Snyder Twp., Blair Co., where exposed in quarry along Elk Run on southern boundary of Twp. (Kay, 1944).


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 ([ ]).