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

Geologic Unit: Tuscarora

Usage:

Tuscarora Formation (PA*,VA,WV)
Tuscarora Quartzite (PA*,MD*,VA*)
Tuscarora Sandstone (MD*,PA*,VA*,WV*)
Tuscarora Formation of Judy Gap Group (WV)


Subunits:

Castanea Member (PA*).


Geologic age:

Late Ordovician to Early Silurian (Ashgillian to Llandovery)*


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

Named from Tuscarora Mountain, PA, [which extends along border line of Juniata and Perry Cos., central southern PA] (Clark, 1897).


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 ([ ]).