USGS Visual Identifier
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Geologic Unit: Milford

Milford Granite (MA*)

Proterozoic, Late*
Geologic Province:
New England province*

Areal Extent:

Type Locality:
Quarries in Milford, eastern MA (Emerson and Perry, 1907).

Unit Name History:
Named (Emerson and Perry, 1907).
Age modified (Emerson, 1917).
Areally restricted (Quinn and others, 1948).
Age modified (Nelson, 1975).
Age modified (Castle and others, 1976).
Age modified; Isotopic dating; Restricted from RI (Goldsmith and others, 1982).
Isotopic dating (Rankin and others, 1983).
MA State Geol. Map usage (Zen and others, 1983).
Overview; Isotopic dating (Wones and 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