A soaring mountain range as tall as the Himalayas once towered over the U.S. East Coast. Some 20 miles (32 kilometers) of rock have since transformed into sand and mud, exposing an outcrop of the most ...
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 title ...
When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A soaring mountain range as tall as the Himalayas once towered over the U.S. East Coast. Some 20 ...
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Michigan lays claim to oldest rocks in US. Where you can find 3.6 billion-year-old stone
Scientists recently unveiled the nation's newest "oldest known" rock — discovered in Michigan's Upper Peninsula. Michigan, Minnesota and Wisconsin all feature ancient rocks known as gneisses — ...
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