Maltby Lakes Metavolcanics

Green to gray-green, fine-grained, massive to well-foliated and layered greenstone, greenschist, and schist; also dark amphibolite to west and southwest.
State Connecticut
Name Maltby Lakes Metavolcanics
Geologic age Middle? Ordovician
Lithologic constituents
Major
Metamorphic > Schistgreen to gray-green, fine-grained, massive to well-foliated and layered greenschist, and schist
Metamorphic > Metaigneous > Greenstonegreen to gray-green, fine-grained, massive to well-foliated and layered
Minor
Metamorphic > Amphibolitedark amphibolite to west and southwest.
Comments Part of Central Lowlands; Iapetus (Oceanic) Terrane - Connecticut Valley Synclinorium; Orange-Milford Belt
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 New Haven