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The Wisconsin glaciation extended from about 75,000 to 11,000 years ago, between the Sangamonian Stage and the current interglacial, the Holocene. The maximum ice extent occurred about 25,000–21,000 years ago during the last glacial maximum , also known as the Late Wisconsin in North America.
1911 map showing extent of the Driftless Area as well as the Driftless region in Minnesota and Iowa Typical terrain of the Driftless Area as viewed from Wildcat Mountain State Park in Vernon County, Wisconsin Glacial map of the Great Lakes region; the dark area near left center was not covered by drift. Areas with diagonal hatching were ...
Glacial Lake Wisconsin 20,000 years ago with modern counties for geographical context. Glacial Lake Wisconsin was a prehistoric proglacial lake that existed from approximately 18,000 to 14,000 years ago, at the end of the last ice age , in the central part of present-day Wisconsin in the United States .
A general map of Wisconsin. Wisconsin, a state in the Midwestern United States, has a vast and diverse geography famous for its landforms created by glaciers during the Wisconsin glaciation 17,000 years ago. The state can be generally divided into five geographic regions—Lake Superior Lowland, Northern Highland, Central Plain, Eastern Ridges ...
No rocks from the Paleogene or Neogene period are known from Wisconsin; however, abundant Quaternary deposits can be found as a result of the last Ice Age. The most recent glacial cycle, the Wisconsin Glaciation, began about 31,500 years ago and receded from the state by around 7,000 years ago. During this time the Lake Michigan Lobe and the ...
Brule Glacial Spillway is a Wisconsin Department of Natural Resources-designated State Natural Area that encompasses the valley of the upper reaches of the Bois Brule River. This valley was carved by the outlet of Glacial Lake Duluth , which occupied what is now the western portion of Lake Superior , during the retreat of the Superior lobe of ...
The Ice Age National Scientific Reserve is an affiliated area of the National Park System of the United States comprising nine sites in Wisconsin that preserve geological evidence of glaciation. To protect the scientific and scenic value of the landforms, the U.S. Congress authorized the creation of a cooperative reserve in 1964.
A map showing the area, labeled here as "Kettle Range" Kettle Moraine is a large moraine in the state of Wisconsin, United States. It stretches from Walworth County in the south to Kewaunee County in the north. It has also been referred to as the Kettle Range and, in geological texts, as the Kettle Interlobate Moraine.