USGS Visual Identifier
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Geologic Unit: Beardsley

Beardsley Member of Prospect Formation (CT*)
Beardsley Member of Harrison Gneiss (CT*)

Ordovician, Middle(?)*
Ordovician, Late
Geologic Province:
New England province*

Areal Extent:

Type Locality:
Hills of Beardsley Park east of Bunnels Pond, Bridgeport, Fairfield Co., CT (Crowley, 1968).

Unit Name History:
Named (Crowley, 1968).
Age modified; Revised (Rodgers, 1982).
Age modified (Rodgers, 1985).
Redescribed; Revised; Age modified (Sevigny and Hanson, 1993).

Note: If you need more information, please contact Nancy Stamm (
Asterisks (*) indicate usage by the U.S. Geological Survey. Other usages by state geological surveys.

"No current usage" implies that a name has been abandoned or that it has fallen into disuse. Former usage and, if known, replacement name given in parentheses ().

Slashes (/) indicate unit name usage violates the 1983 North American Stratigraphic Code. This violation may be explained within brackets ([ ]).

U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA
Database project personnel
Last modified: 15-Jan-2013