U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Magothy

Usage:

Magothy Formation (DE*,DC*,MD*,MA*,NJ*,NY*,PA*)


Subunits:

South Amboy Fire Clay Member (NJ*), Old Bridge Sand Member (NJ*), Amboy Stoneware Clay Member (NJ*), informal Cliffwood and Morgan beds (NJ)


Geologic age:

Late Cretaceous (Santonian)*


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

Type area: exposures along Magothy River, Anne Arundel Co., MD (Darton, 1893).


AAPG geologic province:

Atlantic Coast basin*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 ([ ]).