In a recent study, geologists say Michigan is home to the oldest known rock in the nation. Watersmeet gneiss is found in Michigan's Upper Peninsula. Minnesota's Morton gneiss previously held the ...

"(B)ased on our analyses, we propose that the Watersmeet gneiss wins the prize for the oldest rock, at >3.6 Ga," the report stated. "Taken together, the Archean rocks of the Wyoming-Minnesota ...

Plus, rocks have an illustrious history in greater Minnesota. Iron ore, used to make steel, fed and clothed generations of Iron Rangers. There are agates, beloved by North Shore visitors and the ...

Plate Tectonics in the Archean: Observation versus Interpretation. Science China Press. Journal Science China Earth Sciences DOI 10.1007/s11430-023-1210-5 ...

Mars atmosphere mystery could be solved by rocks in Minnesota. News. By Stefanie Waldek published 10 February 2023 Comments (1) ...