Usage:
Tomstown Dolomite (MD*,PA*,VA*,WV*)
Tomstown Formation (MD,PA*,VA,WV)
Subunits:
Benevola Member (MD*,PA*,VA*,WV*), Bolivar Heights Member (MD*,PA*,VA*,WV*), Dargan Member (MD,PA,WV), Fort Duncan Member (MD*,PA*,VA*,WV*).
Geologic age:
Early Cambrian*
Type section, locality, area and/or origin of name:
Type area: Tomstown, Franklin Co., PA (Stose, 1906).
AAPG geologic province:
Appalachian basin*
Piedmont-Blue Ridge province*
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 ([ ]).