Dioritic phase [of Lebanon Gabbro]

White to black, streaked, medium-grained, foliated or sheared gneiss, composed of plagioclase, biotite, quartz, and generally hornblende.
State Connecticut
Name Dioritic phase [of Lebanon Gabbro]
Geologic age Devonian
Lithologic constituents
Major
Metamorphic > Gneiss > Hornblende-gneissWhite to black, streaked, medium-grained, foliated or sheared gneiss, composed of plagioclase, biotite, quartz, and generally hornblende.
Comments Part of Eastern Uplands; Iapetus (Oceanic) Terrane - Merrimack Synclinorium
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 London - Windham