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The ice continued northward forming the next phase of Lake Chicago. The lake level remained at 640' above sea level, [3] but the ice margin was a third of the way north, opening a channel across Michigan, draining the Lake Saginaw and Lake Whittlesey proglacial lakes in the Lake Huron and Lake Erie basins. [4] Map of Glacial Lakes Duluth ...
Glacial Lake Chicago at the Glenwood Shoreline. The Glenwood Shoreline is an ancient shoreline of the precursor to Lake Michigan, Lake Chicago. It is named after the town of Glenwood, Illinois. The shoreline was formed when the lake was higher during the last ice age, while ice blocked the Straits of Mackinac. After the straits were freed, the ...
[1] The Lake Border Morainic System is younger than the Tinley Moraine and dates from the Glenwood stage of glacial Lake Chicago. The Tinley Moraine is considered pre-Glenwood. [1] The moraine is also touching southern Lynwood, Illinois, South of Cook County, Illinois and north of Will County, Illinois.
Map of the southwestern coast of Proglacial lake Lake Chicago at the Valparaiso Moraine.. The Valparaiso system includes five moraines north of Chicago. The most northerly reach is to the headwaters of the Fox River in Waukesha County, west of Milwaukee.
It resulted from a breach of moraines forming a large glacial lake fed by the melting of the Late Wisconsin Laurentide Ice Sheet. The point of origin of the flood was Lake Chicago. [1] The landscape south of Chicago still shows the effects of the torrent, particularly at Kankakee River State Park [2] and on the Illinois River at Starved Rock ...
The most obvious glacial feature in Illinois is Lake Michigan, the basin of which was carved out by glaciers. [6] As the glaciers receded they left a large number of recessional moraines; among the more visible moraines in the state is the Bloomington Moraine , a Wisconsinan terminal moraine that can be seen in Bureau County .
Chicago's present natural geography is a result of the large glaciers of the Ice Age, namely the Wisconsinan Glaciation that carved out the modern basin of Lake Michigan (which formed from the glacier's meltwater). The city of Chicago itself sits on the Chicago Plain, a flat plain that was once the bottom of ancestral Lake Chicago. This plain ...
They are the glacial Lake Chicago (14,000 YBP), glacial Lake Algonquin (9,000 YBP), glacial Lake Chippewa (7,000 YBP), and the Nipissing Great Lakes stage (4,000 YBP). Once the glaciers had fully retreated from the Lake Michigan basin, after the Lake Nipissing stage, the same factors that created the dunes south of the current shoreline ...