Conanicut Group - Jamestown Formation (RIOCAcj;0)

State	Rhode Island
Name	Conanicut Group - Jamestown Formation
Geologic age	Cambro-Ordovician
Original map label	OCcj
Comments	Part of Esmond-Dedham Subterrane (East Bay Area)
Primary rock type	phyllite
Secondary rock type	siltstone
Other rock types
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.
Map references	Hermes, O.D., Gromet, L.P., Murray, D.P., Hamidzada, N.A., 1994, Geologic Map of Rhode Island, file name = bedrock_shp.zip (870kb) obtained from Rhode Island Geographic Information System, http://www.edc.uri.edu/rigis-spf/Statewide/state.html#geology , shapefile or interchange file, scale 1/100,000. [http://www.edc.uri.edu/rigis-spf/Statewide/state.html#geology]
Unit 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.
Geographic coverage	Newport