| State | Rhode Island |
|---|---|
| Name | Narragansett Bay Group - Sachuest Arkose |
| Geologic age | Pennsylvanian |
| Lithologic constituents |
Major
Sedimentary > Clastic > Conglomerate (Bed)gray, smoky-quartz granule-conglomerate; and pebble to cobble conglomerate
Sedimentary > Clastic > Sandstone (Bed)
Minor
Metamorphic > Metasedimentary > Metaclastic > Phylliteinterbedded with black carbonaceous phyllite
|
| Comments | Part of Esmond-Dedham Subterrane. Narragansett Bay Group - deposited upon older rocks of both West Bay and East Bay parts of the Esmond-Dedham subterrane. |
| 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 |