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Chengwatana Volcanic Group

Chengwatana Volcanic Group - Basalt and related volcanogenic and interflow sedimentary rocks in east-central Minnesota
State Minnesota
Name Chengwatana Volcanic Group
Geologic age Middle Proterozoic
Primary rock type basalt
Secondary rock type rhyolite
Other rock types clastic
Lithologic constituents
Major
Igneous > Volcanic > Mafic-volcanic > Basalt
Minor
Igneous > Volcanic > Felsic-volcanic > Rhyolite
Sedimentary > Clastic
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
Counties Carlton - Chisago - Pine