this post was submitted on 17 Dec 2023

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The Silurian hypothesis: would it be possible to detect an industrial civilization in the geological record? | International Journal of Astrobiology | Cambridge Core (www.cambridge.org)

submitted 11 months ago by [email protected] to c/[email protected]

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[–] [email protected] 2 points 11 months ago

My guess without tech is meteor bombardment. High metal content meteors vaporizing on impact could alter the metal concentrations.