State | Connecticut |
---|---|
Name | Basal member of upper slice of Canaan Mountain Schist |
Geologic age | Cambrian? |
Lithologic constituents |
Major
Metamorphic > GneissGray, generally rusty- or tan-weathering gneiss, composed of quartz, plagioclase, microcline, biotite, and muscovite.
Minor
Metamorphic > Metasedimentary > Metaclastic > Quartziteinterlayered with feldspathic quartzite
|
Comments | Part of Western Uplands; Proto-North American (Continental) Terrance - Displaced Iapetus Terrane |
References | Rodgers, John, compiler, 1985, Bedrock Geological Map of Connecticut: Connecticut Geological and Natural History Survey, Hartford, Connecticut, 2 sheets, scale 1:125,000. |
NGMDB product | |
Counties | Litchfield |