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Author: Geological Survey (U.S.)
Era: Proterozoic
Region: Michigan
Subject: Geology, Stratigraphic
Institution
Format
Subject
Geology, Stratigraphic
4
Geology
2
Geology, Structural
2
Rock deformation
1
Bergland Group (Mich.)
1
Copper Harbor Conglomerate (Mich.)
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1
Copper ores
1
Gneiss
1
Goodrich Quartzite (Mich.)
1
Keweenaw Peninsula (Mich.)
1
Michigamme Formation (Mich. and Wis.)
1
Mines and mineral resources
1
Orogenic belts
1
Porcupine Volcanics (Mich.)
1
Portage Lake Volcanics (Mich.)
1
Radioactive dating
1
Rhyolite
1
Volcanic ash, tuff, etc
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Author
Language
Genre
Literary Form
Region
Michigan
2
Wisconsin
1
Bergland Group (Mich.)
1
Copper Harbor Conglomerate (Mich.)
1
Goodrich Quartzite (Mich.)
1
Keweenaw Peninsula
more ...
1
Keweenaw Peninsula (Mich.)
1
Michigamme Formation (Mich. and Wis.)
1
Negaunee Region
1
Porcupine Volcanics (Mich.)
1
Portage Lake Volcanics (Mich.)
1
Upper Peninsula
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Year of Publication