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Geologic Unit: Wamsutta

Wamsutta Formation (MA*,RI*)
Wamsutta Formation of /Rhode Island Group (MA,RI)
[An identical geographic name may not be applied to a unit [Rhode Island Group] and its parts [Rhode Island Formation] (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983).]

Pennsylvanian, Early*
Pennsylvanian, Middle*
Geologic Province:
New England province*

Areal Extent:

Type Locality:
Not designated. Wamsutta was proposed for name of Twp. but not adopted for North Attleboro, MA, where Wamsutta Mills are located (Woodworth, 1899).

Unit Name History:
Named (Woodworth, 1899).
MA State Geol. Map usage (Zen and others, 1983).
Revised (Skehan and Rast, 1990).
Overview (Goldsmith, 1991).

Note: If you need more information, please contact Nancy Stamm (
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
Database project personnel
Last modified: 15-Jan-2013