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 Paper under the Government of Canada's immigration policy, the "Close Relatives Scheme" resulted in over 400 Ukrainian refugees being employed as workers after World War II. Great Lakes fell victim to trends in the pulp and paper industry in Northern Ontario over the past 15–20 years. Factors in the decline of Great Lakes and the pulp and paper industry in general included trends in advertising, electronic data transmission and storage and the Internet, all of which continue to have adverse effects on traditional print media. Newspaper, magazine and catalog publishing customers increasingly use other forms of media and advertising and electronic