Heinrich event

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A Heinrich event is a natural phenomenon in which large groups of icebergs break off from the Laurentide ice sheet and traverse the Hudson Strait into the North Atlantic. First described by the marine geologist Hartmut Heinrich, they occurred during five of the last seven glacial periods over the past 640,000 years.

Excerpt from the Wikipedia article “Heinrich event”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Goeland1234, CC BY-SA 4.0, via Wikimedia Commons.