CRATER EROSION. “Around 700 million years ago, they found, the Earth’s impact craters were wiped nearly clean. Only two huge craters, the Sudbury basin in Canada and the Vredefort crater in South Africa, predate Snowball Earth — and those craters were staggeringly enormous, originally measuring 93 miles (150 km) and 185 miles (300 km) across, respectively. They’ve been eroded to a fraction of their original size. [Crash! 10 Biggest Impact Craters on Earth].”
https://lnkd.in/ds7GcBF
linkedin post 2022-06-29 05:12:48
Nigel Fleming
September 21, 2022