USGS Visual Identifier
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Geologic Unit: Haverhill

Usage:
Haverhill Granodiorite (NH*)
Haverhill Granodiorite of New Hampshire Plutonic Suite (NH*)

Age:
Devonian*
Geologic Province:
New England province*
Areal Extent:
NH*

Type Locality:
Western part of Orford Twp., Grafton Co., west-central NH (Hadley and others, 1938).

Unit Name History:
Named (Hadley and others, 1938) [From GNU records (USGS DDS-6; Reston GNULEX); complete bibliographic citation and synopsis not given].
Areal limits (Moench, 1990).
NH State Geol. Map usage (Lyons and others, 1997).

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