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Where the Wisconsin River turns west to join the Mississippi, the area to the south, including the whole of Grant County as well as most of Lafayette County, are part of the Driftless Area. The rugged terrain comprising most of the Driftless Area is distinct from the rest of Wisconsin, and is known locally as the Coulee Region. The steep ridges ...
The Baraboo Range is a monadnock in Sauk and Columbia Counties and a National Natural Landmark formed 1.6 billion years ago featuring Devil's Lake, an endorheic lake. Its first use appears to have been in Edwin James' three-volume work, "An Account of an Expedition from Pittsburgh to the Rocky Mountains , Performed in the Years 1819, 1820 ...
Paleozoic rocks in eastern Wisconsin today make up the Niagara Escarpment, a shelf of rock extending from Door County to Horicon Marsh. The cliffs along the escarpment are primarily formed by the early Silurian Mayville Dolostone; the rocks that make up the escarpment were deposited within the Michigan Basin. Continued subsidence of this basin ...
Baraboo Range in winter Looking east down the range on Wisconsin Highway 78. The Baraboo Range is a mountain range in Columbia County and Sauk County, Wisconsin. Geologically, it is a syncline fold consisting of highly eroded Precambrian metamorphic rock. It is about 25 miles (40 km) long and varies from 5 to 10 miles (16 km) in width.
Wisconsin is divided into five geographic regions. The Driftless Area of southwestern Wisconsin is characterized by bluffs carved in sedimentary rock by water from melting Ice age glaciers. Pictured is the confluence of the Mississippi and Wisconsin rivers. Sea caves are located on the shorelines of the Apostle Islands in Lake Superior.
Based on the large size of the sand volcanoes, the quake must have been at least a 7 or an 8 magnitude — approaching the size of the Great 1906 San Francisco earthquake.
A magnitude 2.5 earthquake was detected in the Crandon area in northern Wisconsin Sunday morning, according to the U.S. Geological Survey. The earthquake hit 4 kilometers, or about two and a half ...
The red dots show larger-magnitude earthquakes in Minnesota, Wisconsin, Michigan's Upper Peninsula and southern Ontario. The earthquake near Minnesota's western "bulge" is the Morris earthquake. This map and table shows where Minnesota's earthquakes have occurred. Earthquakes 1, 6, 9, 11, 15 and 18 are in the Great Lakes tectonic zone.