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 Theater Great Lakes Theater Great Lakes Theater is a professional classic theater company in Cleveland, Ohio, USA. Founded in 1962, Great Lakes is the second-largest regional theater in Northeast Ohio. It specializes in large-cast classic plays with a strong foundation in the works of Shakespeare and features an educational outreach program. The company performs its main stage productions in rotating repertory at its state-of-the-art new home at the Hanna Theatre, Playhouse Square, which reopened on September 20, 2008. The organization shares a resident company of artists with the Idaho Shakespeare Festival. On its main stage and through its education programs, GLT