TY  - RPRT
TI  - U-Th-Pb zircon ages of some Keweenawan Supergroup rocks from the south shore of Lake Superior
AU  - R. E. Zartman
AU  - S. W. Nicholson
AU  - W.F. Cannon
AU  - G. B. Morey
PY  - 1997
DO  - 10.1139/e17-044
UR  - https://pubs.usgs.gov/publication/70019942
ID  - 70019942
ER  -