GEOLEX database
Geologic Unit: Dry Hill
Usage:
Dry Hill Gneiss (MA*)
Dry Hill Granite Gneiss (MA*)
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Type Locality:
Exposures on Dry Hill, 3 mi southeast of Millers Falls, Millers Falls 7.5-min quadrangle, north-central MA (Balk, 1956).
Subunits:
Pelham Quartzite Member (MA*)
Unit Name History:
First used (Willard, 1951).
Named Dry Hill Granite Gneiss (Balk, 1956).
Age modified; Name modified (Ashwal and others, 1979).
Isotopic dating (Rankin and others, 1983).
MA State Geol. Map usage (Zen and others, 1983).
Revised; Age modified; Overview (Robinson and Luttrell, 1985).
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: 7-Jan-2007