| 词条 | Lake Ojibway |
| 释义 |
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 ice dam separating it from Hudson Bay broke, as the lake was roughly {{convert|250|m|abbr=on}} above sea level. A comparable mechanism produced the Missoula floods that created the channeled scablands of the Columbia River basin.[2] 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.[2][3] The draining of Lake Ojibway is a possible cause of the 8.2 kiloyear event, a major global cooling that occurred 8,200 years BP. See also
References1. ^{{cite journal|last1=Coleman|first1=Arthur Philemon|title=Lake Ojibway; Last of the Great Glacial Lakes|journal=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|accessdate=30 October 2015}} 2. ^1 2 {{cite conference|author1=Lajeunesse, P. |author2=St-Onge, G. |title=Reconstruction of the Last Outburst Flood of Glacial Lake Agassiz-Ojibway in Hudson Bay and Hudson Strait|booktitle= American Geophysical Union, Fall Meeting 2007|date=2007|bibcode=2007AGUFM.C51A0075L}} 3. ^{{cite book |title=After the Ice Age. |last1= Pielou |first1=E.C. |year=1991 |publisher=University of Chicago Press |location=Chicago |isbn=9780226668123}} External links
6 : Glacial lakes of the United States|Glacial lakes of Canada|Geology of Ontario|Former lakes|Proglacial lakes|Megafloods |
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