No current usage.
(†Irasburg Granite (VT-recognized locally in Orleans Co.) considered obsolete.)
Devonian
Probably named from Irasburg Twp. or village of Irasburg, Orleans Co., northeastern VT (Foyles and Richardson, 1929).
New England province
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
Asterisk (*) indicates published by U.S. Geological Survey authors.
"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).
Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).