Revisions of stratigraphic nomenclature within the Keweenawan supergroup of northern Michigan / by William F. Cannon and Suzanne W. Nicholson. Geochemistry, petrography, and volcanology of rhyolites of the Portage Lake volcanics, Keweenaw Peninsula, Michigan / by Suzanne W. Nicholson.
- Physical Description: 1 online resource (various pagings) : illustrations, maps.
- Publisher: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 1992.
- Distributor: [Washington, D.C.] : United States Government Printing Office
|General Note:|| Title from title screen (viewed Aug. 25, 2014).
|Bibliography, etc. Note:|| Includes bibliographical references.
Search for related items by subject
|Subject:||Geology, Stratigraphic > Proterozoic.
Rhyolite > Michigan > Keweenaw Peninsula.
Volcanic ash, tuff, etc. > Michigan.
Bergland Group (Mich.)
Copper Harbor Conglomerate (Mich.)
Porcupine Volcanics (Mich.)
Portage Lake Volcanics (Mich.)
Search for related items by series
- U.S. Geological Survey bulletin ; 1970 A-B
- Contributions to the geology and mineral resources of the midcontinent rift system
- U.S. Geological Survey bulletin ; 1970 A-B.
- Contributions to the geology and mineral resources of the midcontinent rift system ; ch. A-B.