Wednesday, May 13, 2015

4 glaciers in the midwest by: Jason Block

My research focused on the landforms created by 4 glaciers in the midwest. The four glaciers are the Nebraskan, Kansan, Illinoian and Wisconsinan. These four glaciers occurred during the pleistocene epoch which occurred from 2.6 million to 10,000 years ago. Types of landforms created are moraines, erratics, kettles and drumlins. A moraine is created from a mass of rocks and sediment carried down and deposited by a glacier, typically as ridges at its edges or extremity. A kettle is a hole in the ground created by a glacier. An erratic is a rock that looks like it doesn't belong with the other rocks. A drumlin is an oval or elongated hill believed to have been formed by the streamlined movement of glacial ice sheets across rock debris, or till.


Moarine:

Kettle:

Erratic:

Drumlin:

The four glaciers:

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