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Mille Lacs Group and related rocks of the Penokean fold-and-thrust belt; Quartzite at Dam Lake

Mille Lacs Group and related rocks of the Penokean fold-and-thrust belt; Quartzite at Dam Lake - Quartz arenite and sericitic quartz schist; includes a substantial component of mafic volcanic rock fragments
StateMinnesota
NameMille Lacs Group and related rocks of the Penokean fold-and-thrust belt; Quartzite at Dam Lake
Geologic ageEarly Proterozoic
Original map labelPeqd
Primary rock typearenite
Secondary rock typeschist
Other rock typesvolcanic rock
Lithologic constituents
Major
Metamorphic > Schistsericitic quartz schist
Sedimentary > Clastic > Sandstone > Arenitequartz arenite
Minor
Igneous > Volcanicsubstantial component of mafic volcanic rock fragments
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 coverageAitkin - Crow Wing

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