450 - 440 million years ago a ~50˚ True Polar Wander event swept Gondwana across the South Pole, triggering glaciation and the second most lethal of the “Big Five” mass extinctions, the end-Ordovician mass extinction nature.com Submitted by GeoGeoGeoGeo t3_101xgio on January 3, 2023 at 3:58 AM in science 19 comments 847
Incendiary_mind742 t1_j2qu9cd wrote on January 3, 2023 at 8:09 AM Horse shoes and hand grenades. Close enough on an order of magnitude maybe. Still fun to think about Permalink 7
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