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Felsic to intermediate volcanic and volcaniclastic rocks, mica schist, phyllite, and granitoid rocks

Felsic to intermediate volcanic and volcaniclastic rocks, mica schist, phyllite, and granitoid rocks - Variably and cataclastically deformed. Unit forms aeromagnetic "quiet zone" and probably contains some rocks of Paleoproterozoic age.
StateMinnesota
NameFelsic to intermediate volcanic and volcaniclastic rocks, mica schist, phyllite, and granitoid rocks
Geologic ageLate Archean
Original map labelAqz
Primary rock typefelsic volcanic rock
Secondary rock typeintermediate volcanic rock
Other rock typesschist; phyllite; granitoid
Lithologic constituents
Major
Metamorphic > Metaigneous > Metavolcanicfelsilc to intermediate volcanic and volcaniclastic rocks, variably and cataclastically deformed
Minor
Metamorphic > Metasedimentary > Metaclastic > Phyllite
Metamorphic > Schist
Incidental
Igneous > Plutonic > Granitic
Map references
Morey, G.B., and Meints, Joyce, 2000, Geologic map of Minnesota - Bedrock Geology: Minnesota Geological Survey, State Map Series, S-20, 3rd edition, scale 1:1,000,000. available online at: http://www.geo.umn.edu/mgs/currentpubs.htm
Unit references
Morey, G.B., and Meints, Joyce, 2000, Geologic map of Minnesota - Bedrock Geology: Minnesota Geological Survey, State Map Series, S-20, 3rd edition, scale 1:1,000,000. available online at: http://www.geo.umn.edu/mgs/currentpubs.htm
Geographic coverageBig Stone - Cass - Crow Wing - Douglas - Grant - Otter Tail - Pope - Stevens - Todd - Traverse - Wadena

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