TY  - RPRT
TI  - Revisions of stratigraphic nomenclature within the Keweenawan Supergroup of Northern Michigan. Geochemistry, petrography, and volcanology of rhyolites of the Portage Lake volcanics, Keweenaw Peninsula, Michigan
AU  - William F. Cannon
AU  - Suzanne W. Nicholson
PY  - 1992
DO  - 10.3133/b1970ab
UR  - https://pubs.usgs.gov/publication/b1970AB
ID  - b1970AB
ER  -