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Scientists Discover Ancient ‘Hotspot’ That Shaped the Great Lakes 300 Million Years Ago as Earth’s First ImprintAccording to Live Science, the lakes formed about 20,000 years ago because of a hotspot beneath the supercontinent of Pangaea that existed 300 million years ago. The supercontinent broke apart to ...
Million years ago, Earth was part of the supercontinent Pangaea ... Verde hotspot lay beneath the Great Lakes region since about 300 million years ago, when North America was part of Pangaea.
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