Geologic Unit: Assabet
Assabet Quartz Diorite (MA*)
Exposures on Hill 272 in northeast corner of Maynard. The main tongue-shaped mass of rock extends from Maynard northeastward into Concord quadrangle, north-central MA Named from exposures near Assabet River in town of Maynard (Hansen, 1956).
Unit Name History:
Named (Hansen, 1956).
Age changed (Castle and others, 1976; Goldsmith and others, 1982).
MA State Geol. Map usage (Zen and others, 1983).
Overview (Wones and Goldsmith, 1991).
Note: If you need more information, please contact Nancy Stamm (firstname.lastname@example.org).
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
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Last modified: 15-Jan-2013