Shelton Member of Trap Falls Formation (CT*)
Shelton muscovite granite (informal) (CT)
For informal usage, the rank or lithologic term should not be capitalized.
Ordovician, Early*
Ordovician, Middle*
Devonian, Middle
Type area: described in the Shelton anticline in the Long Hill 7.5-min quadrangle, Fairfield Co., CT (Crowley, 1968).
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 ([ ]).