Great Lakes tectonic zone southern Ontario. Several earthquakes have been documented in Minnesota in the last 120 years, with at least six in the GLTZ. The epicenters show a clear relationship to tectonic features of the state; four epicenters lie along the Great Lakes tectonic zone. Depths are estimated at . The best-documented event occurred on July 9, 1975, near Morris, Minnesota, with a magnitude of 4.6, and a felt area of covering parts of four states. Wisconsin has had no earthquakes along the GLTZ, Michigan's Upper Peninsula has had four earthquakes in the vicinity of the GLTZ – Negaunee, Newberry and two in
Great Lakes Junior C Hockey League Leamington awarded 1972-73 regular season title over Windsor Royals due to winning head-to-head record." National Hockey League Great Lakes Junior C Hockey League The Great Lakes Junior C Hockey League was a Junior "C" ice hockey league in Ontario, Canada, sanctioned by the Ontario Hockey Association. The champion of the Great Lakes competed for the All-Ontario Championship and the Clarence Schmalz Cup. It is now a division in the Provincial Junior Hockey League. The league got its start as the Border Cities Junior Hockey League in 1968. It became a Junior B and C league under the Great Lakes name