Usage:
No current usage.
(†Border Conglomerate (VA) replaced with Leesburg Member of Balls Bluff Siltstone, [?]Tuscarora Creek Member of Manassas Sandstone, Millbrook Quarry Member of Waterfall Formation, Goose Creek Member of Catharpin Creek Formation, Reston Member of Manassas Sandstone, Haudricks Mountain Member of Tibbstown Formation, Rapidan Member of Manassas Sandstone, Mountain Run Member of Tibbstown Formation. See Leesburg, [?]Tuscarora Creek, Millbrook Quarry, Goose Creek, Reston, Haudricks Mountain, Rapidan, and Mountain Run.)
Geologic age:
Triassic, Late
Jurassic, Early
Type section, locality, area and/or origin of name:
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).
AAPG geologic province:
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 ([ ]).