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by JPLeRouzic
6 days ago
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> Many of the large plates are more than 1000km across, they’d need to be moving meters per year for that to happen. In reality it’s cm per year. A plate moving one centimeter per year would move over 10,000 km (6000 miles) over a million year, isn't? It's two times the distance from New-York to San Francisco, one fourth of the Earth circumference! And the Cretaceous–Paleogene extinction event was approximately 66 mya. |
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No, 10,000 km is 10e6 meters, or 1e9 cm, so at 1cm/year it would take a billion years, not a million.