Conanicut Group - Jamestown Formation

Green to black phyllite interstratified with buff to pink siltstone; trilobite-bearing.
State Rhode Island
Name Conanicut Group - Jamestown Formation
Geologic age Cambro-Ordovician
Lithologic constituents
Major
Sedimentary > Clastic > Siltstone (Bed)Green to black phyllite interstratified with buff to pink siltstone; trilobite-bearing.
Metamorphic > Metasedimentary > Metaclastic > PhylliteGreen to black phyllite interstratified with buff to pink siltstone; trilobite-bearing.
Comments Part of Esmond-Dedham Subterrane (East Bay Area)
References

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