Geologic Unit: Trap Falls
Trap Falls Formation*
Trap Falls Formation of Hartland Group
East and west shores of Trap Falls Reservoir, north of Bridgeport, Long Hill quadrangle, Fairfield Co., southwest ern CT (Crowley, 1968).
Basal unnamed schist and granulite member, Shelton Member*, and Carringtons Pond Member*
Unit Name History:
Named (Crowley, 1968). Revised; Age modified (Rodgers, 1985). Revised (Sevigny and Hanson, 1993).
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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
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Last modified: 15-Jan-2013