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Scientists discover ancient 'hotspot' that birthed the Great Lakes 300 million years ago

Live Science
Summary
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78% Informative

The Great Lakes formed 20,000 years ago thanks to a hotspot that sat under the supercontinent Pangaea .

The Cape Verde hotspot heated and stretched the crust under the spot that would eventually become the Great Lakes .

This process led to a low spot in the topography of the region, which glaciers later scraped out during the ice age.