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APR 30, 2014 - Huffington Post

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Earth's Oldest, Biggest Impact Crater Yields New Secrets

Geologists say they've discovered rocks long thought vanished, the youngest remains of the oldest and biggest impact crater on Earth. In the abraded heart of South Africa's Vredefort impact crater lurk striking green-black rocks, some of the only remnants of a magma sea that once filled the gaping crater, according to a study to be published this May in the journal Geology. Until now, geologists thought nearly all of these "impact melt" rocks were lost to time. Some 6 miles (10 kilometers) of Vredefort crater has worn away since it was whacked open 2.02 billion years ago. "It's like ... Read More

Tags: Earth's Oldest, Biggest Impact Crater Yields New Secrets,  South Africa Latest News