Perry Mountain Formation (ME*,MA*,NH*,VT*)
late Early to early Late Silurian (Wenlock to Ludlow)*
Perry Mountain, 9 mi from the town of Rangeley, Anson, Kennebago Lake, and Rangeley quadrangles, Franklin Co., ME (Cariani, 1959).
New England province*
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.
"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).