USGS Visual Identifier
National Geologic Map Database logo GEOLEX database

Geologic Unit: Maltby Lakes

Maltby Lakes Metavolcanics (CT*)

Ordovician, Middle(?)*
Geologic Province:
New England province*
Areal Extent:

Type Locality:
Area around Maltby Lakes Reservoirs near CT Highway 34, New Haven quadrangle, southern CT (Fritts, 1964).

Unit Name History:
Named Maltby Lakes Volcanics (Fritts, 1964). Members named; Age modified (Burger, 1965). Revised (Burger, 1967). Redescribed as Maltby Lakes Metavolcanics; Age modified (Rodgers, 1985).

Note: If you need more information, please contact Nancy Stamm (
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
Database project personnel
Last modified: 15-Jan-2013