Earth's interior dynamics may explain Antarctica's early glaciation
A study in Science suggests that slow-moving waves in Earth's mantle lifted East Antarctica over millions of years, creating high terrain where ice could form even during a warmer global climate. This process, initiated after Antarctica and Africa separated, eventually led to the establishment of the East Antarctic Ice Sheet about 34 million years ago. The findings help resolve why Antarctica froze long before the Arctic.
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Original headline: “Forces deep inside Earth helped Antarctica freeze before the Arctic.” Browse more stories.