The oldest ice disappears and the Stone Age emerges from it

(sciencenorway.no)

71 points | by dxs 4 hours ago

10 comments

  • pugworthy 1 hour ago
    To be clear, so far some of the oldest ice found is over 6 million years old...

    https://news.oregonstate.edu/news/six-million-year-old-ice-d...

  • autoexec 10 minutes ago
    Sure, our actions and inaction regarding climate change threaten the very future of humanity, but on the bright side we're going to learn so much about human history in the process!
    • ant6n 7 minutes ago
      Climate is out. Climate tech too.

      AI is in.

  • skeledrew 7 minutes ago
    Just wait for a few ancient-but-novel pathogens to start emerging too.
  • lexicality 1 hour ago
    I'm slightly surprised they're just holding these artefacts with bare hands. I thought that was generally a no-no for dealing with objects untouched for thousands of years
    • AlotOfReading 52 minutes ago
      Conservationists and archivists (sometimes) use gloves on cleaned samples, but not archaeologists. An archaeologist wearing gloves is almost certainly just cold.

      There's no real reason to immediately protect the find from light handling when it's discovered. It's a dirty object that's still coated in whatever was floating around the environment for those thousands of years. The rock will be fine and probably handled multiple times before it gets back to an archive.

      I think the only times I've worn gloves in the field were for a very rusty metal dagger and some especially sensitive human remains.

    • dieselgate 1 hour ago
      Me too but presumably they’re not really that unique as there are hundreds? Or maybe the stone/hard artifacts are handled different than organic/soft.
  • chrisco255 2 hours ago
    What's most impressive to me is how razor sharp the slate arrowhead they show in the top photo is. I've seen photos of many stone age arrowheads but they are usually much more dull and blunted.
    • jacquesm 45 minutes ago
      That's because they weren't exposed to the weather as much. Essentially these were 'shrinkwrapped' in nature's own version of Cosmoline. No bacteria, no free oxygen. Once did this with a rose to see how long it would last and it basically was perfect until we moved house. Many years and not even the slightest change, it didn't even lose color.
      • spockz 5 minutes ago
        That would actually be a brilliant treatment to give wedding bouquets! I’ve never heard of Cosmoline. Going to look it up. Thanks!
  • PowerElectronix 3 hours ago
    Does this mean that the ice wasn't there during the stone age?
    • kzrdude 2 hours ago
      Yes: most mainland Norway ice was gone during the holocene climatic optimum (9–6 thousand years ago), and glaciers recovered since then (until approx the 20th century, when deglaciation started accelerating again).

      The climate is varying in long cycles, and the deglaciation 20 thousand years ago (last glacial maximum) was driven by a spike in summer temperatures, and this peak has already long passed. Ice ages and interglacial periods have a certain momentum to them, so it takes more than just that to go back to full ice age..

    • chrisco255 2 hours ago
      Yes, the early Neolithic was warmer than modern era.
      • mistrial9 1 hour ago
        wrong: IPCC AR6 puts the warmest Holocene stretch (~6.5 ka) at about 0.2-1°C above 1850-1900. 2011-2020 already beat that
    • throwaway173738 2 hours ago
      Whatever you put in the glacier the glacier gives back to you. Anything you leave there ends up at the bottom of it in the moraine.
  • gAI 2 hours ago
    Including Stone Age diseases?
  • bpbp-mango 1 hour ago
    I wonder what we will find beneath Greenland's ice?
  • mikert89 2 hours ago
    Hyperborea
  • dyauspitr 3 hours ago
    [flagged]
    • sublinear 3 hours ago
      That last sentence is how we know you've never been there. The ratio is the same as anywhere else.
      • dyauspitr 3 hours ago
        I’ve been to Norway, Sweden, Iceland, Denmark, Finland, the British Isles, all of it really.