Pg. 114, 146, and map. Branford granite gneiss. Medium-grained granite, with banded structure, consisting very largely of white feldspar. In the feldspars are embedded small round quartz grains having a slightly brownish tint, and biotite is present in about equal amount. Small reddish garnets commonly present. Covers large part of Branford Townhip, central southern Connecticut. Probably igneous and pre-Cambrian.
Source: US geologic names lexicon (USGS Bull. 896, p. 253).
Pg. 38. Branford gneiss is of igneous origin.
Source: US geologic names lexicon (USGS Bull. 896, p. 253).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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