Αποτελέσματα Αναζήτησης
15 Μαΐ 2021 · The northern portions and southeastern portions of Wisconsin perfectly display how glacier movement can create a new landscape and central and western Wisconsin help to show the dichotomy between glaciated and non-glaciated portions of the state.
Maps showing the extent of the Laurentide Ice Sheet and changes to glacial lakes at several times. This set of maps, keyed to the graph below, shows when ice first began its advance into Wisconsin (A), ice near its maximum extent (B and C), the initial retreat (D), when ice left Wisconsin (E), and the final major readvance (F). A B C D E
Wisconsin Glacial Stage, most recent major division of Pleistocene time and deposits in North America, which began between about 100,000 and 75,000 years ago and ended about 11,000 years ago. It was named for rock deposits studied in the state of Wisconsin .
The maps are available as a free download in our publication Laurentide Ice Sheet: Ice-Margin Positions in Wisconsin (ES056) and as a video (below). Wisconsin’s last glacier Maximum extent of the last glaciers in Wisconsin.
WGNHS has been producing geologic maps, scientific reports, and more for over 125 years. Our publications catalog offers thousands of maps, reports, datasets, and other publications—all of which are available to view and download for free.
The original map is held on open file by the Wisconsin Geological and Natural History Survey and served as the basis for the page-size map of Wisconsin Glacial Deposits which has been widely distributed.
Maximum glaciation of the Northern Hemisphere (black) during the Quaternary climatic cycles. The Wisconsin glaciation, also called the Wisconsin glacial episode, was the most recent glacial period of the North American ice sheet complex, peaking more than 20,000 years ago.
