Revisions of stratigraphic nomenclature within the Keweenawan supergroup of northern Michigan

An edition of Revisions of stratigraphic nomenclature within the Keweenawan supergroup of northern Michigan (1992)

Revisions of stratigraphic nomenclature within the Keweenawan supergroup of northern Michigan

By William F. Cannon

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Publish Date

1992

Publisher

U.S. G.P.O.,For sale by Book and Open-File Report Sales, U.S. Geological Survey

Language

eng

Pages

Description:

subjects: Rhyolite, Stratigraphic Geology, Volcanic ash, tuff

Places: Bergland Group (Mich.), Copper Harbor Conglomerate (Mich.), Keweenaw Peninsula, Michigan, Porcupine Volcanics (Mich.), Portage Lake Volcanics (Mich.)

Times: Proterozoic