Events Calendar

Chaos and Complex Systems Seminar: Thoughts on drumlins, a major component of Wisconsin's glacial landscape

At a Glance

Tuesday, February 27
12:00 PM - 1:00 PM
Speaker: David Mickelson, UW Department of Geology

4274 Chamberlin Hall



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Robin Chapman

Thousands of cigar-shaped elongate hills dominate the landscape to the east and north of Madison. Produced by glaciers 15,000 to 25,000 years ago, they have a range of heights from meters or less to several hundred meters and have distinctly different length-to-width ratios in different areas. All are parallel to former ice flow direction. They are composed of sediments deposited by the last glaciation, but many also contain older deposits. Why are they so abundant in Wisconsin, but absent from the huge areas covered by the last glaciation in most of Illinois, Indiana, Iowa, and Ohio?