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By some back of the napkin calculations I did once, I found that a couple billion years is enough for the tectonic plates to have completely recycled themselves
by chimi 7y ago
By some back of the napkin calculations I did once, I found that a couple billion years is enough for the tectonic plates to have completely recycled themselves into the mantle, erasing any structures built on them.
- MauranKilom 7y agoCorrect, the stratigraphic record is 3.5 billion years old. At least if this (https://xkcd.com/1194/ https://xkcd.com/1194/) xkcd is to be truested.