Conanicut Group - East Passage Formation

Red, orange-brown, and gray-green phyllite and thinly-bedded, nongraded sandstone and siltstone; rare limestone, and sparse volcanic rock including welded-tuff.
State Rhode Island
Name Conanicut Group - East Passage Formation
Geologic age Cambro-Ordovician
Lithologic constituents
Sedimentary > Clastic > Siltstone (Bed)
Metamorphic > Metasedimentary > Metaclastic > Phyllite
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Carbonate > Limestone (Bed)
Igneous > Volcanic (Pyroclastic-tuff)sparse volcanic rock including welded-tuff
Comments Part of Esmond-Dedham Subterrane (East Bay Area)

Hermes, O.D. (comp.), Gromet, L.P. (comp.), Murray, D.P. (comp.), Hamidzada, N.A., Skehan, J.W., and Mosher, S., 1994, Bedrock geologic map of Rhode Island: Rhode Island Map Series No. 1, Kingston, Rhode Island, scale 1:100,000.

NGMDB product
Counties Newport