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Rangeley Formation, Ribbon-banded calc-silicate of eastern New Hampshire

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Probably equivalent to Patch Mountain Member of the Sangerville Formation (Llandoverian and Wenlockian) of central Maine.
State New Hampshire
Name Rangeley Formation, Ribbon-banded calc-silicate of eastern New Hampshire
Geologic age Lower Silurian (Llandoverian)
Lithologic constituents
Major
Metamorphic > Metasedimentary > Calc-silicate-rockribbon-banded calc-silicate
Comments Part of the Central Maine Composite Terrane (Central Maine Trough) - Variably metamorphosed sedimentary and volcanic rocks of greenschist to granulite facies, locally migmatized. Area includes structural belts between the Monroe fault on the west and the Campbell Hill fault on the east; that is, the Bronson Hill anticlinorium, Piedmont allochthon, Kearsarge-central Maine synclinorium, central New Hampshire anticlinorium, and Rochester-Lebanon (Maine) antiformal synclinorium.
References

Lyons, J.B., Bothner, W.A., Moench, R.H., and Thompson, J.B., Jr., 1997, Bedrock Geologic Map of New Hampshire: Reston, VA, U.S. Geological Survey Special Map, 2 sheets, scale 1:250,000.

https://ngmdb.usgs.gov/Prodesc/proddesc_37338.htm
NGMDB product
Counties Belknap - Carroll - Strafford