The Michigan Basin is a bowl-shaped region in central North America that includes Michigan and its surrounding Great Lakes. The basin contains a sedimentary rock record of up to 5 km (16,000 ft) of ...

Different plate tectonic settings produce distinctive basin environments where sedimentary rocks are deposited ... In the past, virtually the entire North American continent has been underwater.

And by default, the 191-square-mile body of water takes the cake for North America's oldest freshwater ... that lava flows occurred in the Tahoe Basin at three separate points in time - 2.3 ...