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Smalls Falls Formation, Metaconglomerate member

Smalls Falls Formation, Metaconglomerate member - Found in Errol quadrangle in northern New Hampshire.
StateNew Hampshire
NameSmalls Falls Formation, Metaconglomerate member
Geologic ageUpper to Middle Silurian (Ludlovian and Wenlockian)
Original map labelSsfc
CommentsPart 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.
Primary rock typemeta-conglomerate
Secondary rock type
Other rock types
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > Metaconglomeratemetaconglomerate
Map references
Bennett, D. S, , Wittkop, C.A., and Dicken, C.L., 2006 , Bedrock Geologic Map of New Hampshire - A Digital Representation of the Lyons and others 1997 map and ancillary files: U.S. Geological Survey Data Series 215, scale 1:250,000, CD-ROM.
Unit 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, 1:250,000, 2 sheets.
Geographic coverageCoos

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