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- W2012068685 abstract "Ocean circulation models indicate that freshwater runoff from the North American continent during the last deglaciation may have had an effect on North Atlantic Ocean circulation, and thereby have altered regional climate. One such example is a flood from Lake Agassiz, which has been proposed by previous workers to have caused the onset of the Younger Dryas at around 12,850 calibrated years B.P. by entering the North Atlantic through the Gulf of St. Lawrence. We present two radiocarbon ages from terrestrial organic sources in the Champlain Valley that we associate with the pre-Champlain Sea proglacial lake phases; a musk-ox bone with an AMS age of 11,362 ± 115 14C years B.P. (13,438–13,020 calibrated years B.P.), and a wood fragment with an AMS age of 10,901 ± 76 14C years B.P. (12,995–12,793 calibrated years B.P.). These ages together with a glacial lacustrine varve estimate suggest that the initiation of the Champlain Sea may not have occurred until after the onset of the Younger Dryas. If the Lake Agassiz flood event occurred before the opening of the Champlain Sea then the floodwaters would have been diverted down the Champlain and Hudson valleys to the North Atlantic. Another possibility is that the Agassiz flood may have been contemporaneous with the opening of the Gulf of St. Lawrence. It is also possible that there may have been a large enough flood produced by meltwater originating in the Champlain Valley and St. Lawrence Lowlands at the inception of the Champlain Sea to have affected ocean circulation without the influence of Lake Agassiz." @default.
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- W2012068685 date "2007-03-01" @default.
- W2012068685 modified "2023-09-27" @default.
- W2012068685 title "Evidence from the Lake Champlain Valley for a later onset of the Champlain Sea and implications for late glacial meltwater routing to the North Atlantic" @default.
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- W2012068685 doi "https://doi.org/10.1016/j.palaeo.2006.10.027" @default.
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