USGS Visual Identifier
National Geologic Map Database logo GEOLEX database


Geologic Unit: Erving

Usage:
Erving Formation (MA*,CT*)
Erving Member of Littleton Formation (MA)

Age:
Devonian, Early*

Geologic Province:
New England province*

Areal Extent:
MA*
CT*

Type Locality:
Erving, Millers Falls quadrangle, central MA (Emerson, 1917).

Unit Name History:
Named Erving hornblende schist (Emerson, 1917).
Overview; Age modified (Willard, 1951).
Not used (Balk, 1956).
Redescribed as Erving Formation; Age modified (Thompson, 1968).
Overview (Leo and others, 1977).
MA State Geol. Map usage (Zen and others, 1983).
Extended into CT (Rodgers, 1985).
Overview (Hatch and others, 1988).

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