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Frontenac Formation, undivided

Frontenac Formation, undivided - Interbedded thick feldspathic wackes, tan and green slates, and minor calcareous lenses.
StateNew Hampshire
NameFrontenac Formation, undivided
Geologic ageSilurian?
Original map labelSfr
CommentsPart of the Grenville Terrane (Connecticut Valley Trough).
Primary rock typemetasedimentary rock
Secondary rock typeslate
Other rock types
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > Slate
Metamorphic > Metasedimentary > Metaclastic > Metasandstone > Metagraywackeinterbedded thick feldspathic wackes
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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