Usage:
Trap Falls Formation (CT*)
Trap Falls Formation of Hartland Group (CT)
Subunits:
Basal unnamed schist and granulite member, Shelton Member*, and Carringtons Pond Member*
Geologic age:
Ordovician, Early*
Ordovician, Middle*
Type section, locality, area and/or origin of name:
East and west shores of Trap Falls Reservoir, north of Bridgeport, Long Hill quadrangle, Fairfield Co., southwestern CT (Crowley, 1968).
AAPG geologic province:
New England province*
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 ([ ]).