Usage:
Cushing Formation of Casco Bay Group (ME*)
Subunits:
Falmouth-Brunswick sequence divided into 4 informal members (ascending): Richmond Corner, Torrey Hill, Mount Ararat, and Nehumkeag Pond; Saco-Harpswell sequence divided into 5 informal members (ascending): Peaks Island, Yarmouth Island, Merepoint, Bethel Point, and Wilson Cove
Geologic age:
Neoproterozoic to early Paleozoic*
Type section, locality, area and/or origin of name:
Named from exposures on Cushing Island in Casco Bay, southwestern ME (Katz, 1917).
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 ([ ]).