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National Geologic Map Database

Geologic Unit: North Keys

Usage:

North Keys Sand (MD*)


Geologic age:

Tertiary*
Miocene*


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

Vicinity of North keys, a hamlet on road from Brandywine to Naylor, in Prince Georges Co., MD. Crops out on eastern flank of upland, caps many hills between the upland and Patuxent River, and is exposed in many roadcuts (Hack, 1955).


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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).