+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Glacial lakes Wisconsin and Oshkosh; two very different late-glacial ice-marginal lakes in Wisconsin



Glacial lakes Wisconsin and Oshkosh; two very different late-glacial ice-marginal lakes in Wisconsin



Abstracts with Programs - Geological Society of America 37(5): 22



Two large ice-marginal lakes, glacial Lakes Wisconsin and Oshkosh, were dominant features in the late-glacial landscape of Wisconsin. These lakes formed along the edge of the Green Bay Lobe, and nearly overlapped in time, but their histories are very different. Glacial Lake Wisconsin formed when the western edge of the Green Bay Lobe advanced onto the eastern end of the Baraboo Hills, damming the Wisconsin River. The resulting lake in central Wisconsin drained northwestward to the East Fork of the Black River. When the Green Bay Lobe receded, the lake expanded eastward and then drained southward to the Wisconsin River around the east end of the Baraboo Hills. The rapid drainage of this, and possibly earlier versions, of glacial Lake Wisconsin carved the network of sandstone gorges known as the Wisconsin Dells. Throughout most of its existence glacial Lake Wisconsin was separated from the Green Bay Lobe by broad outwash plains and there were no major advances of ice into the lake. Shore features of glacial Lake Wisconsin are poorly preserved and sediment deposited in the lake is dominantly sand. No radiocarbon dates closely constrain the timing of events in the history of glacial Lake Wisconsin. Lake Oshkosh was a much more complex ice-marginal lake. It formed as the Green Bay Lobe receded from the Green Bay lowland. This lake first drained westward through an outlet at Portage to the Wisconsin River. As the Green Bay Lobe continued to recede, a series of progressively lower outlets eastward to the Lake Michigan basin became available, the Portage outlet was abandoned, and lake level dropped. The geomorphology of the area and the sedimentary sequence in the lake basin indicate that the Green Bay Lobe readvanced into Lake Oshkosh at least twice, at about 13,200 and 11,500 RCYBP, blocking most or all of the eastern outlets and raising lake level until drainage shifted back to the Portage outlet. Sediment deposited in glacial Lake Oshkosh is characterized by thick sequences of laminated silt and clay-rich lake sediment interbedded with till and sandy lake sediment and outwash. Locally, shore features of Lake Oshkosh are fairly well preserved. Organic material interbedded with lake sediment has yielded a number of radiocarbon dates that constrain the timing of events in the history of glacial Lake Oshkosh.

Accession: 019082803

Download citation: RISBibTeXText


Related references

Late Wisconsin stratigraphy of the glacial Lake Oshkosh Basin, Wisconsin. Abstracts with Programs - Geological Society of America 35(2): 60, 2003

Chronology of late Wisconsin glacial lakes in Fond du Lac County, east-central Wisconsin. Geological Society of America 43.5, 2011

Late glacial pollen spectra from sediments of the glacial Lake Oshkosh basin, Wisconsin. Abstracts with Programs - Geological Society of America 37(7): 423, 2005

The late Wisconsinan glacial lakes of the Fox River watershed, Wisconsin. Transactions of the Wisconsin Academy of Sciences, Arts and Letters: 188-201, 1980

Late Wisconsin glacial retreat in the Great Lakes region, North America. Annals of the New York Academy of Sciences 288(none): 70-89, 1977

Correlation of late Wisconsin glacial phases in the western Great Lakes area. Geological Society of America Bulletin: 2, Pages 1585-1593. 1985., 1985

A geographic information system reconstruction of glacial Lake Oshkosh and ancient hydrology of eastern Wisconsin from models of glacial isostatic adjustment. Abstracts with Programs - Geological Society of America 36(3): 6, 2004

Drainage of late Wisconsin glacial lakes and the morphology and late Quaternary stratigraphy of the New Jersey-southern New England continental shelf and slope. Marine Geology 172(1-2): 117-145, 2001

Glacial lakes in the Indian Himalayas--from an area-wide glacial lake inventory to on-site and modeling based risk assessment of critical glacial lakes. ScienceoftheTotalEnvironment468-469Suppl:S71, 2013

History of the glacial Lake Oshkosh basin, Wisconsin. Abstracts with Programs - Geological Society of America 35(2): 60, 2003

Glacial lakes Scuppernong and Yahara, southeastern Wisconsin. Abstracts with Programs - Geological Society of America 29(4): 10, 1997

Glacial outburst floods from proglacial lakes in Wisconsin. Abstracts with Programs - Geological Society of America 36(5): 281, 2004

Multiple glaciations in the Genesee Valley predating the most recent (late Wisconsin) readvance; a unique record of glacial events and fauna in the Finger Lakes-western NY region. Proceedings of the Rochester Academy of Science: , Pages 63. 1998., 1998

Numerical simulation of the paleohydrology of glacial Lake Oshkosh, eastern Wisconsin, USA. Quaternary Research 69(1): 117-129, 2008

Profiles of peatlands within limits of extinct glacial lakes Agassiz and Wisconsin. Botanical Gazette (Chicago) 80(4): 345-366, 1925