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posted by chromas on Wednesday October 30 2019, @06:24PM   Printer-friendly

Something crashed into Earth and helped wipe out mammoths and other animals 13,000 years ago, study says

Around 13,000 years ago, giant animals such as mastodons, mammoths, saber-toothed cats and ground sloths disappeared from the Earth. Scientists have found evidence in sediment cores to support a controversial theory that an asteroid or a comet slammed into Earth and helped lead to this extinction of ice age animals and cooling of the globe.

It's called the Younger Dryas Impact Hypothesis and was first suggested in 2007. The hypothesis included the idea that an extraterrestrial body impacted Earth 12,800 years ago. This led to an extreme cooling of the environment, which in turn helped cause more than 35 species of large animals to go extinct.

At the same time, human populations declined. The impact also has been suggested as the cause of large, raging wildfires that created enough smoke to block the sun and created an "impact winter," in which cold weather lasts longer than expected after Earth is impacted.

[...] Today, evidence of such an impact can be found in platinum spikes. Platinum can be found in asteroids, comets and meteorites. Researchers found them in sediment cores collected from White Pond in Elgin, South Carolina.

Sediment Cores from White Pond, South Carolina, contain a Platinum Anomaly, Pyrogenic Carbon Peak, and Coprophilous Spore Decline at 12.8 ka (open, DOI: 10.1038/s41598-019-51552-8) (DX)


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  • (Score: 0) by Anonymous Coward on Thursday October 31 2019, @03:01AM (2 children)

    by Anonymous Coward on Thursday October 31 2019, @03:01AM (#914006)

    There is no evidence at all in any of those links that the Moon was molten 13,000 years ago.

    Yes, there is. I will leave it to any reader to decide for themselves who is correct on that ridiculously obvious point. Anyone capable of comprehending a few paragraphs can see it...

  • (Score: 2, Insightful) by khallow on Thursday October 31 2019, @02:39PM (1 child)

    by khallow (3766) Subscriber Badge on Thursday October 31 2019, @02:39PM (#914123) Journal

    I will leave it to any reader to decide for themselves who is correct on that ridiculously obvious point.

    No, that's not how rational argument works. It's your job to support your arguments. Not this ridiculous cycle of making unfounded assertions and then vacuously claiming that the right people will bother to research it and reach the right conclusions.

    • (Score: -1, Troll) by Anonymous Coward on Thursday October 31 2019, @05:50PM

      by Anonymous Coward on Thursday October 31 2019, @05:50PM (#914253)

      Not this ridiculous cycle of making unfounded assertions and then vacuously claiming that the right people will bother to research it and reach the right conclusions.

      Wow. Who knew Trump comes to this site?