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{{Infobox body of water
'''Lake Ojibway''' was a [[prehistoric]] lake in what is now Northern [[Ontario]] and [[Quebec]] in [[Canada]]. Ojibway was the last of the great [[proglacial lake]]s of the last [[ice age]]. Comparable in size to [[Lake Agassiz]] (to which it was probably linked), and north of the [[Great Lakes]], it was at its greatest extent c. 8,500 years [[Before Present|BP]]. The former lakebed forms the modern [[Clay Belt]], an area of fertile land.<ref name=AGU/>▼
| name = Lake Ojibway
| image = Glacial Lake Agassiz and Glacial Lake Ojibway, 7,900 BPE.png
| caption = Glacial [[Lake Agassiz]] and Lake Ojibway (7,900 YBP)
| coords ={{coord|48|N|80|W|type:waterbody_scale:3000000|display=inline,title}}
| location = [[Ontario]] & [[Quebec]]
| group =
|pushpin_map=Ontario
| lake_type = [[:Category:Former lakes|former lake]]
| etymology = [[Ojibwe|Chippewa Nation]]
| inflow = [[Laurentide Ice Sheet]]
| outflow = [[Ottawa River]] valley <ref name=Michalek>{{cite web|last1=Michalek |first1= Michael J. |date=April 23, 2013 |title= Examining the Progression and Termination of Lake Agassiz (PDF) |publisher=Michigan State University |url=https://msu.edu/~michal76/research/407_Geomorphology_Lake%20Agassiz2.pdf}}</ref>
| catchment =
| basin_countries = Canada
| date-flooded = 9,160 years before present
| length = {{convert|1314|mi|km|abbr=on}}
| width = {{convert|365|mi|km|abbr=on}} {{convert|212|mi|km|abbr=on}}
| area =
| depth =
| max-depth =
| volume =
| residence_time = 1900 years in existence
| shore =
| elevation = {{convert|820|ft|m|0|abbr=on}}<ref name="Michalek"/>
| islands =
| islands_category =
| cities =
| reference = Coleman, Arthur Philemon (1909). [http://www.geologyontario.mndmf.gov.on.ca/mndmfiles/pub/data/imaging/ARV18/ARV18.pdf "Lake Ojibway; Last of the Great Glacial Lakes"]. Ontario Bureau of Mines. Report 18 (4): 284–293. Retrieved 30 October 2015.
}}
▲'''Lake Ojibway''' was a [[prehistoric]] lake in what is now Northernnorthern [[Ontario]] and [[Quebec]] in [[Canada]]. Ojibway was the last of the great [[proglacial lake]]s of the last [[ice age]].<ref>{{cite journal|last1=Coleman|first1=Arthur Philemon|title=Lake Ojibway; Last of the Great Glacial Lakes|journal=[[Ministry of Northern Development and Mines|Ontario Bureau of Mines]]|date=1909|volume=Report 18|issue=4|pages=284–293|url=http://www.geologyontario.mndmf.gov.on.ca/mndmfiles/pub/data/imaging/ARV18/ARV18.pdf|access-date=30 October 2015}}</ref> Comparable in size to [[Lake Agassiz]] (to which it was probablylikely linked), and north of the [[Great Lakes]], it was at its greatest extent c. 8,500 years [[Before Present|BP]]. The former lakebed forms the modern [[Clay Belt]], an area of fertile land.<ref name=AGU/>
 
Lake Ojibway was relatively short-lived. The lake drained in what must have been a catastrophic and dramatic manner around 8,200 years BP. One hypothesis is that a weakening [[Proglacial lake|ice dam]] separating it from [[Hudson Bay]] broke, as the lake was roughly {{convert|250|m|spabbr=uson}} above [[sea level]]. A comparable mechanism produced the [[Missoula floods]] that created the [[Channeledchanneled scablands]] of the [[Columbia River]] basin.<ref name=AGU/>
 
A recent analysis states it has not been conclusively determined whether the lake drained by a breach of the ice dam, by water spilling over the glacier, or by a flood under the glacier. It is also not conclusively known whether there were one or more pulses, and the route the water took to reach Hudson's Bay has not been determined.<ref name=AGU>{{cite conference|authorauthor1=Lajeunesse, P.; |author2=St-Onge, G. |title=Reconstruction of the Last Outburst Flood of Glacial Lake Agassiz-Ojibway in Hudson Bay and Hudson Strait|booktitlebook-title= American Geophysical Union, Fall Meeting 2007|date=2007|accessdatebibcode=2012-09-24|url=http://adsabs.harvard.edu/abs/2007AGUFM.C51A0075L}}</ref><ref>{{cite isbn|9780226668123}}</ref>book
|title=After the Ice Age.
|last1= Pielou |first1=E.C.
|year=1991
|publisher=University of Chicago Press
|location=Chicago
|isbn=9780226668123
}}
</ref>
 
The draining of Lake Ojibway wasis the mosta likelypossible cause of the [[8.2 -kiloyear event]], a major [[global cooling]] that occurred 8,200 years BP.
 
==See also==
* [[Tyrrell Sea]]
* [[Glacial lake outburst flood]]
* [[Lake Agassiz|Glacial Lake Agassiz]]
* [[Glacial Lake Missoula]]
* [[Champlain Sea]]
* [[Lake Algonquin]]
* [[Lake Chicago]]
* [[Lake Maumee]]
* [[Last Glacial Maximum]]
* [[Midcontinent Rift System]]
* [[Niagara Escarpment]]
* [[Nipissing Great Lakes]]
* [[List of prehistoric lakes]]
* [[Deluge (prehistoric)]]
 
==References==
{{reflist}}
 
*Pielou, E.C. ''After the Ice Age''. Chicago: University of Chicago Press, 1991. {{ISBN-13|9780226668123}}
==External links==
*AFP{{cite Sun Feb 24, 3:42 PM, “Hownews|title=How it happened: The catastrophic flood that cooled the Earth”Earth|url=http://www.cosmosmagazine.com/news/1864/catastrophic-ancient-flood-cooled-earth|publisher=Cosmos retrieved Feb 25, 2008 from [Magazine|archive-url=https://web.archive.org/web/20120329143949/http://www.cosmosmagazine.com/news/1864/catastrophic-ancient-flood-cooled-earth]|archive-date=2012-03-29|date=2008-02-25|access-date=2012-09-27|url-status=dead}}
 
{{Pleistocene Lakes and Seas}}
 
[[Category{{DEFAULTSORT:Former lakes|Ojibway]]}}
[[Category:Glacial lakes of the United States]]
[[Category:Glacial lakes of Canada]]
[[Category:Geology of Ontario]]
[[Category:Former lakes of North America]]
[[Category:Proglacial lakes]]
[[Category:Megafloods]]
 
 
{{Glaciology-stub}}
{{palaeo-geo-stub}}
 
[[fi:Ojibway-jääjärvi]]
[[uk:Льодовикове озеро Оджибвей]]
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