Calumet Township, officially the Charter Township of Calumet, is a charter township of Houghton County in the Upper Peninsula of the U.S. state of Michigan. The population was 6,263 at the 2020 census
Community of Kearsarge along U.S. Route 41
Jacobsville Sandstone
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Jacobsville Sandstone is a red sandstone formation, marked with lightly-colored streaks and spots, primarily found in northern Upper Michigan, portions of Ontario, and under much of Lake Superior. Des
Sample of Jacobsville Sandstone from Jacobsville, Michigan, in the A.E. Seaman Mineral Museum collection
Distribution of Jacobsville Sandstone within the Upper Peninsula
Red Jacobsville Sandstone underlying the white Munising Formation in Pictured Rocks National Lakeshore
Quarry of the Kerber-Jacobs Redstone Company at Portage Entry about 1897