|Geologic age||Middle? Ordovician|
Metamorphic > Metaigneous > GreenstoneGreen, fine-grained, massive greenstone, composed of epidote, actinolite, albite, and chlorite, commonly with abundant megacrysts of saussurite.
Metamorphic > Metasedimentary > Metaclastic > Phylliteinterlayered with minor green phyllite, generally containing quartz and sericite
|Comments||Part of Central Lowlands; Iapetus (Oceanic) Terrane - Connecticut Valley Synclinorium; Orange-Milford Belt|
Rodgers, John, compiler, 1985, Bedrock Geological Map of Connecticut: Connecticut Geological and Natural History Survey, Hartford, Connecticut, 2 sheets, scale 1:125,000.