earth:geohammers:m_bce_events
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earth:geohammers:m_bce_events [2020/06/13 13:45] 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. | ||
| + | |||
| + | ]]https://en.wikipedia.org/wiki/Pingualuit_crater]] | ||
| ==== Homo erectus Diverges, 1.8M BCE ==== | ==== Homo erectus Diverges, 1.8M BCE ==== | ||
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| A meteor strike forms a 12km wide crater and lake, 100km north of the Arctic Circle and 360km from Pevek, Russia. The Siberian crater was drilled for sediment core analysis and climate information by Julie Brigham-Grette and her team form the University of Massachusetts Amherst. | A meteor strike forms a 12km wide crater and lake, 100km north of the Arctic Circle and 360km from Pevek, Russia. The Siberian crater was drilled for sediment core analysis and climate information by Julie Brigham-Grette and her team form the University of Massachusetts Amherst. | ||
| - | Alexandra Witze. 2010. "Siberian lake yields climate record: winter drilling project also penetrates ancient impact crater." //Science News//. 178(11):p13. | + | The megaladon sharks go extinct during this time. |
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| + | Alexandra Witze. 2010. "Siberian lake yields climate record: winter drilling project also penetrates ancient impact crater." //Science News//. 178(11):p13.\\ | ||
| + | [[https://www.popsci.com/story/science/megalodon-alive-myth/?utm_source=digg]]\\ | ||
| ==== Australpithecines Diverge, 4M BCE ==== | ==== Australpithecines Diverge, 4M BCE ==== | ||
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| [[http://en.wikipedia.org/wiki/Karakul_(Tajikistan)]] | [[http://en.wikipedia.org/wiki/Karakul_(Tajikistan)]] | ||
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| + | ==== Miocene Ends / Pliocene Begins, 5.333M BCE ==== | ||
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| + | A global warm period ends, and glaciations begin. | ||
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| + | [[https://en.wikipedia.org/wiki/Miocene]]\\ | ||
| ==== Chimpanzee Diversion, 6.3M BCE ==== | ==== Chimpanzee Diversion, 6.3M 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]] | ||
| + | |||
| + | ==== ERV-FC Virus, 33M BCE ==== | ||
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| + | A retrovirus began to infect mammals, and it did so for about 15M years. | ||
| + | |||
| + | [[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. | ||
| + | |||
| + | ==== Hiawatha Crater, 58M BCE ==== | ||
| + | |||
| + | Originally thought to be only 13,000 years old, later analyses indicate that Hiawatha Crater on Greenland is much, much older. | ||
| + | |||
| + | [[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]] | ||
| + | |||
| + | ==== KGB Carbon Dioxide Jump, 304M BCE ==== | ||
| + | |||
| + | Kasimovian-Gzhelian boundary (KGB) records doubling in CO2 from 350ppm to 700ppm within just 300,000 years. | ||
| + | |||
| + | [[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.1592055933.txt.gz · Last modified: 2020/06/13 13:45 by khavikanum
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