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National Geologic Map Database

Geologic Unit: Marlboro

Usage:

Marlboro Clay of Pamunkey Group (DC*,MD*,VA*)


Geologic age:

early Tertiary (late Paleocene and/or early Eocene)*
[age is controversial]


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

Exposures near Upper Marlboro, Prince Georges County, MD.


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 ([ ]).