USGS Visual Identifier
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Geologic Unit: Hoppin

Usage:
Hoppin Formation (MA*)

Age:
Cambrian, Early*
Geologic Province:
New England province*
Areal Extent:
MA*

Type Locality:
Exposed at Hoppin Hill, North Attleboro, eastern MA (Emerson, 1917).

Unit Name History:
Named Hoppin Slate (Emerson, 1917).
Revised to Hoppin Formation; Age modified (Goldsmith and others, 1982).
MA State Geol. Map usage (Zen and others, 1983).
Abandoned (Landing, 1988).
Overview (Goldsmith, 1991).
Age modified (Rankin and others, 1993).

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