www.physorg.com...
Canadian geologists say they can shed light on how a vast lake, trapped under the ice sheet that once smothered much of North America, drained into
the sea, an event that cooled Earth's climate for hundreds of years.
Quotes from the above:
By some estimates, sea levels rose 14 metres (45 feet) as a result.
Temperatures dropped by more than three degrees Celsius (5.4 degrees Fahrenheit) in Western Europe for 200-400 years -- a mini-Ice Age in itself.
..around 8,200 years ago, Agassiz-Ojibway massively drained, sending a flow of water into the Hudson Strait and into the Labrador Sea that was 15
times greater than the present discharge of the Amazon River.
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