- Usage in publication:
-
- Cardinal Brook Intrusive Suite*
- Modifications:
-
- Named
- Geochronologic dating
- Dominant lithology:
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- Granite
- Gneiss
- AAPG geologic province:
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- New England province
Summary:
Cardinal Brook Intrusive Suite is here named in the cores of the Chester-Athens dome and Rayponda-Sagawga dome in the eastern and southern Green Mountains, VT, and the northern part of the Berkshire massif, MA. Includes the Stamford Granite of Hitchcock (1861), the Somerset Reservoir Granite (new name), the Harriman Reservoir Granite (new name), and the Bull Hill Gneiss of Richardson (1931). Consists of coarse-grained post-tectonic biotite granite and rapakivi granite that intrudes Middle Proterozoic gneiss of the Mount Holly Complex. U-Pb zircon age is Middle Proterozoic (960-950 Ma).
Source: GNU records (USGS DDS-6; Reston GNULEX).
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 ([ ]).