No current usage.
(†Border Conglomerate (VA) abandoned. Rocks reallocated to several formations.)
Late Triassic to Early Jurassic(?) (Carnian to Pliensbachian?)
Type locality not designated. Border Conglomerate is a term proposed for conglomerates along the east and west borders of the Triassic basins in VA (Roberts, 1928).
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 ([ ]).