Gabriel S. Jacobs's avatar

Gabriel S. Jacobs

@gsjphd.bsky.social

Makes me wonder about the longest-lived environments in the fossil record. How long did it take for that mud-mound reef to accumulate its stratigraphic thickness? For how many millions of years did stromatolites carpet a bay in the Proterozoic? How much time is in a layer of coal in deltaic sand?

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