earth:geohammers:m_bce_events
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earth:geohammers:m_bce_events [2020/10/15 13:23] khavikanum |
earth:geohammers:m_bce_events [2022/12/25 17:55] (current) khavikanum |
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| [[http://www.physorg.com/news183278038.html]] | [[http://www.physorg.com/news183278038.html]] | ||
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| + | ==== Pingualuit Crater, 1.4M BCE ==== | ||
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| + | Canadian impact crater in Quebec with a Secchi depth visibility >115ft, recharged solely by snowfall and rainfall. It's noted for its nearly perfect circular dimensions with a depth of 1300ft and a diameter of just over 2mi, and was known to the Inuit as the 'pimple' and the Crystal Eye of Nunavik. | ||
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| + | ]]https://en.wikipedia.org/wiki/Pingualuit_crater]] | ||
| ==== Homo erectus Diverges, 1.8M BCE ==== | ==== Homo erectus Diverges, 1.8M BCE ==== | ||
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| [[http://geosphere.gsapubs.org/content/9/4/864.abstract]]\\ | [[http://geosphere.gsapubs.org/content/9/4/864.abstract]]\\ | ||
| [[http://en.wikipedia.org/wiki/Marysvale_volcanic_field]] | [[http://en.wikipedia.org/wiki/Marysvale_volcanic_field]] | ||
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| + | ==== ERV-FC Virus, 33M BCE ==== | ||
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| + | A retrovirus began to infect mammals, and it did so for about 15M years. | ||
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| + | [[https://en.wikipedia.org/wiki/ERV-Fc]] | ||
| ==== Beginning of the Oligocene Epoch, 34M BCE ==== | ==== Beginning of the Oligocene Epoch, 34M BCE ==== | ||
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| This rise in temperature likely drove out much of the oxygen in the world's oceans, causing a large die off of marine animals. The world would have shifted to a warmer and wetter overall climate, a major selection event in and of itself. | This rise in temperature likely drove out much of the oxygen in the world's oceans, causing a large die off of marine animals. The world would have shifted to a warmer and wetter overall climate, a major selection event in and of itself. | ||
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| + | ==== Hiawatha Crater, 58M BCE ==== | ||
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| + | Originally thought to be only 13,000 years old, later analyses indicate that Hiawatha Crater on Greenland is much, much older. | ||
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| + | [[https://phys.org/news/2022-03-giant-impact-crater-greenland-million.html]]\\ | ||
| ==== K-T Boundary, 65M BCE ==== | ==== K-T Boundary, 65M BCE ==== | ||
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| [[http://phys.org/news/2012-06-fungi-coal-formation-advance-future.html]] | [[http://phys.org/news/2012-06-fungi-coal-formation-advance-future.html]] | ||
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| + | ==== KGB Carbon Dioxide Jump, 304M BCE ==== | ||
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| + | Kasimovian-Gzhelian boundary (KGB) records doubling in CO2 from 350ppm to 700ppm within just 300,000 years. | ||
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| + | [[https://phys.org/news/2022-05-carbon-climate-ocean-anoxia-ancient.html]]\\ | ||
| ==== End Devonian Impacts, Karoo Glaciation, 360M BCE ==== | ==== End Devonian Impacts, Karoo Glaciation, 360M BCE ==== | ||
earth/geohammers/m_bce_events.1602768191.txt.gz ยท Last modified: 2020/10/15 13:23 by khavikanum
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