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Frontenac Formation, Massive tan- or brown-weathering calcite-ankerite-muscovite granofels and interbedded gray metapelite

Frontenac Formation, Massive tan- or brown-weathering calcite-ankerite-muscovite granofels and interbedded gray metapelite - Probably partly a facies equivalent to the Waits River Formation in Vermont.
StateNew Hampshire
NameFrontenac Formation, Massive tan- or brown-weathering calcite-ankerite-muscovite granofels and interbedded gray metapelite
Geologic ageSilurian?
Original map labelSfrc
CommentsPart of the Grenville Terrane (Connecticut Valley Trough).
Primary rock typegranofels
Secondary rock typemeta-argillite
Other rock types
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > Pelitic-schistinterbedded gray metapelite
Metamorphic > Granoblastic > Granofelsmassive tan- or brown-weathering calcite-ankerite-muscovite granofels
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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