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I imagine there would be residue of artificially created nuclear materials that would still be detectable a billion years later. Some half lives are measured in
by 93po 4y ago
I imagine there would be residue of artificially created nuclear materials that would still be detectable a billion years later. Some half lives are measured in sextillion/quintillion years.
- alchemist1e9 4y agoI don’t have a reference handy but I remember reading there is a candidate period around 55 million years ago. The temperature rose rapidly and there are elevated heavy metals and isotopes in the crust from that time period.