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  1. Re: Huge asteroid crater found under the ice in Greenland

    Carlson theorized that a cometary fragment hit near Michigan and liquified much of the Laurentide Ice Sheet as part of a bombardment of the Northern Hemisphere that occurred in a single day, iirc....
  2. Re: Huge asteroid crater found under the ice in Greenland

    So it wasn’t JUST a comet particularate impact. Imagine the effect on a coastal oriented civilization of any kind of a Tauride stream impact on the Laurentide Ice Sheet of the kind popularized by...
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