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PPhysiography of the Valparaiso Moraine. Valparaiso Moraine at Mink Lake, north of Valparaiso, Indiana. The Valparaiso Moraine is a recessional moraine (a landform left by receding glaciers) that forms an immense U around the southern Lake Michigan basin in North America. It is a band of hilly terrain composed of glacial till and sand.
Chicago Heights lies on the high land of the Tinley Moraine, with the higher and older Valparaiso Moraine lying just to the south of the city.. According to the 2021 census gazetteer files, Chicago Heights has a total area of 10.30 square miles (26.68 km 2), of which 10.28 square miles (26.63 km 2) (or 99.87%) is land and 0.01 square miles (0.03 km 2) (or 0.13%) is water.
Compared to the Valparaiso Moraine, the Tinley Moraine is much narrower and occupies a similar swath, about 6 miles (10 km) closer to Lake Michigan, and passes through the communities of Flossmoor, Western Springs, and Arlington Heights. The moraine was named after the village of Tinley Park, a village southwest of Chicago that lies on the moraine.
The edge of the retreating glacier formed moraines, the Park Moraine in present-day Illinois and the Lake Borders Moraine in Indiana and Michigan. [ 4 ] Early Lake Chicago at the edge of the ice sheet, near the head of the Chicago Outlet River, lower left Map of Glacial lakes Whittlesey, Saginaw and Chicago, based on the USGS Report of 1915 ...
It can be clearly seen as a sand ridge along Ridge Road south of Chicago. Closer to the lake from the Calumet Shoreline, there are the Tolleston shorelines and farther from the lake are the Glenwood Shoreline, the Tinley Moraine, and the Valparaiso Moraine. The shoreline is named after the Calumet Region of Northern Indiana. [1]
Drawing of Lake Chicago at the Glenwood Stage showing the Chicago area. The Michigan Lobe of the continental glacier had been growing and receding since 70,000 BCE. The glacier had been static along the Valparaiso Moraine for many years before it again began to recede northward. Around 12,000 BCE the glacier began receding north of the ...
This shows that this lake existed during the Valparaiso Moraine stage. The lakes level extended up the Kankakee River Valley about as far as Braidwood, where the sand dunes set in. Once this breach in the Marseilles moraine was created, it became the discharged for Lake Chicago. [1] Combined with Lake Wauponsee's waters, the outlet deepened.
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