TY  - RPRT
TI  - The Great Lakes tectonic zone: Revisited
AU  - P.K. Sims
AU  - W. C. Day
PY  - 1993
DO  - 10.3133/b1904s
UR  - https://pubs.usgs.gov/publication/b1904S
ID  - b1904S
ER  -