Steven Dutch University of Wisconsin - Green Bay
Time 1000 yr | Glacial | Interglacial | Event | Events in Wisconsin |
---|---|---|---|---|
Wisconsin | ||||
Sangamon | ||||
Illinoisan | ||||
Yarmouth | ||||
Kansan | ||||
Aftonian | ||||
Nebraskan (many Pleistocene geologists favor abandoning this term) | Very old tills near mouth of Wisconsin River; possible incision of present upper Mississippi along ice margin. | |||
Approximately 20 glacial advances known from deep-sea sediment sampling | ||||
2000 | Beginning of Pleistocene |
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Created 27 Dec 1997, Last Update 15 Sep 1997