Geologic Unit: Barnard
Barnard Gneiss (VT*)
Barnard Volcanic Member of Missisquoi Formation (VT*)
Barnard Twp., Windsor Co., VT (Richardson, 1924).
Unit Name History:
Named (Richardson, 1924).
Age modified; Isotopic dating (Aleinikoff and Karabinos, 1990).
Areal limits (Thompson, 1990).
Isotopic dating (Trzcienski and others, 1992).
Overview; Age modified (Ratcliffe, in press).
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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