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National Geologic Map Database

Geologic Unit: Aquia

Usage:

Aquia Formation (DE*,MD,DC*)
Aquia Greensand (DE*,MD,DC*)
Aquia Formation of Pamunkey Group (MD*,VA*)
Aquia Greensand of Pamunkey Group (MD*)


Subunits:

Paspotansa (MD*,VA*) and Piscataway (MD*,VA*) Members.


Geologic age:

early Tertiary (late Paleocene)*


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

Type locality: Aquia Creek, Stafford Co., eastern VA (Clark and Martin, 1901).


AAPG geologic province:

Atlantic Coast 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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).