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Conanicut Group - Fort Burnside Formation

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Buff siltstone at base grading upward into black to gray phyllite; units commonly cyclically repeated. Intimately interstratified with OCAcj, such that the two units are grouped together at the presented map scale.
State Rhode Island
Name Conanicut Group - Fort Burnside Formation
Geologic age Cambro-Ordovician
Lithologic constituents
Major
Sedimentary > Clastic > Siltstone (Bed)Buff siltstone at base grading upward into black to gray phyllite; units commonly cyclically repeated. Intimately interstratified with OCAcj, such that the two units are grouped together at the presented map scale.
Metamorphic > Metasedimentary > Metaclastic > PhylliteBuff siltstone at base grading upward into black to gray phyllite; units commonly cyclically repeated. Intimately interstratified with OCAcj, such that the two units are grouped together at the presented map scale.
Comments Part of Esmond-Dedham Subterrane (East Bay Area). Printed map states that unit OCcfb is mapped with OCcj due to scale, so unit label on digital map is OCcj+OCcfb.
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