Usage:
Cobble Mountain Formation (MA*,CT*)
Geologic age:
Middle Ordovician*
Type section, locality, area and/or origin of name:
Type area: along and near southeast shores of Cobble Mountain Reservoir, including outcrops along Cobble Mountain Road and point of land that extends northward into Reservoir 2.3 km west of southeast corner of Blandford quadrangle, Hampden Co., southwestern MA (Hatch and Stanley, 1973).
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 ([ ]).