USGS Visual Identifier
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Geologic Unit: Perry Mountain

Usage:
Perry Mountain Formation (ME*,MA*,NH*,VT*)

Age:
Silurian*
Wenlockian*
Ludlovian*

Geologic Province:
New England province*



Areal Extent:
ME*
MA*
NH*
VT*

Type Locality:
Perry Mountain, 9 mi from the town of Rangeley, Anson, Kennebago Lake, and Rangeley quadrangles, Franklin Co., ME (Cariani, 1959).

Unit Name History:
Named in ME (Cariani, 1959).
Overview (Osberg and others, 1968).
Extended into NH (Hatch and others, 1983).
Extended into MA (Hatch and others, 1988).
Age modified (Moench and Pankiwskyj, 1988).
Revised; Areal limits (Moench, 1990).
Revised; Age modified; Isotopic dating; Extended into VT (Moench and others, 1995).
NH State Geol. Map usage; Isotopic dating (Lyons and others, 1997).

Note: If you need more information, please contact Nancy Stamm (nstamm@usgs.gov).
Asterisks (*) indicate usage by the U.S. Geological Survey. Other usages by state geological surveys.

"No current usage" implies that a name has been abandoned or that it has fallen into disuse. Former usage and, if known, replacement name given in parentheses ().

Slashes (/) indicate unit name usage violates the 1983 North American Stratigraphic Code. This violation may be explained within brackets ([ ]).






U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA
URL http://ngmdb.usgs.gov/ngmdb/ngm_catalog.ora.html
Database project personnel
Last modified: 15-Jan-2013