Usage:
Juniata Formation (MD*,PA*,TN*,VA*,WV*)
Juniata Formation of Judy Gap Group (WV)
Subunits:
Beans Gap claystone paleosol (informal) (TN), East Waterford Member (PA), Faust Flat silty clay paleosol (informal) (PA), Potters Mills clay paleosol (informal) (PA), Run Gap Member (PA).
Geologic age:
Late Ordovician*
Type section, locality, area and/or origin of name:
Named from typical ccurrence on Juniata River, central southern PA (Clark, 1897).
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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).