|Name||Pink granitic gneiss|
|Geologic age||Proterozoic Y|
Metamorphic > GneissLight-pink to gray, medium- to coarse-grained, foliated but generally massive or poorly layered granitic gneiss, composed of quartz, microcline, oligoclase, and either biotite or muscovite or both, also locally amphibole or epidote.
|Comments||Part of Western Uplands; Proto-North American (Continental) Terrane - Proterozoic Massifs - ""Grenville""|
Rodgers, John, compiler, 1985, Bedrock Geological Map of Connecticut: Connecticut Geological and Natural History Survey, Hartford, Connecticut, 2 sheets, scale 1:125,000.
|Counties||Fairfield - Litchfield|