Narragansett Bay Group - Pondville Conglomerate (RIPAnbpo;0)

Narragansett Bay Group - Pondville Conglomerate

Gray to greenish conglomerate with sand-sized matrix, interbedded with quartz arenite and litharenite; typically lenticular and discontinuous. At type locality (Pondville Station, Massachusetts), unit consists of interbedded red and green slate, siltstone, arkose, and quartzite-pebble conglomerate.

State	Rhode Island
Name	Narragansett Bay Group - Pondville Conglomerate
Geologic age	Pennsylvanian
Lithologic constituents	Major Sedimentary > Clastic > Sandstone > Arenite (Bed)interbedded with quartz arenite and litharenite; typically lenticular and discontinuous Sedimentary > Clastic > Conglomerate (Bed)gray to greenish conglomerate with sand-sized matrix; At type locality (Pondville Station, Massachusetts) unit consists of quartzite-pebble conglomerate Incidental Sedimentary > Clastic > Sandstone > Arkoseat type locality (Pondville Station, Massachusetts) Sedimentary > Clastic > Siltstoneat type locality (Pondville Station, Massachusetts) Metamorphic > Metasedimentary > Metaclastic > Slateat type locality (Pondville Station, Massachusetts), unit consists of interbedded red and green slate
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	NGMDB product page for 19719
Counties	Kent - Providence

Narragansett Bay Group - Pondville Conglomerate

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.