earth:geohammers:b_bce_events
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earth:geohammers:b_bce_events [2017/11/14 23:54] khavikanum [Global Oxidation Event (GOE) 2.33B BCE] |
earth:geohammers:b_bce_events [2021/02/13 15:49] khavikanum |
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| ==== Columbia Supercontinent, 1.5B BCE ==== | ==== Columbia Supercontinent, 1.5B BCE ==== | ||
| - | Third supercontinent breaks up. | + | Third supercontinent, sometimes called Nuna-Rodinia, breaks up. It's formation may have caused a cessation in tectonic activity, leading to nearly a billion years without orogeny (no mountain forming from 1.8B to 0.8B years) based on europium content in zircon crystals. |
| [[http://www.enotes.com/earth-science/supercontinents]]\\ | [[http://www.enotes.com/earth-science/supercontinents]]\\ | ||
| [[http://en.wikipedia.org/wiki/Supercontinent]]\\ | [[http://en.wikipedia.org/wiki/Supercontinent]]\\ | ||
| + | [[https://phys.org/news/2021-02-europium-crystals-earth-middle-ages.html?fbclid=IwAR2Ivo0vXVhITs4U519gskk4AunwwyVH4soeGHn3SNhA20f1K5daDLdgzx0]] | ||
| Upper bound for the development of nitrogen fixation. It could have begun 2.2 BCE up to 1.5B BCE, and likely was only possible because of the GOE. | Upper bound for the development of nitrogen fixation. It could have begun 2.2 BCE up to 1.5B BCE, and likely was only possible because of the GOE. | ||
| Line 43: | Line 44: | ||
| [[https://phys.org/news/2017-11-met-iron-deep-earth-conditions.html]]\\ | [[https://phys.org/news/2017-11-met-iron-deep-earth-conditions.html]]\\ | ||
| - | ==== Kenorland Supercontinent, 2.6B BCE ==== | + | ==== Kenorland Supercontinent, 2.4B BCE ==== |
| - | Second supercontinent breaks up. | + | Supercontinent breaks up. |
| [[http://en.wikipedia.org/wiki/Supercontinent]]\\ | [[http://en.wikipedia.org/wiki/Supercontinent]]\\ | ||
| [[http://www.enotes.com/earth-science/supercontinents]]\\ | [[http://www.enotes.com/earth-science/supercontinents]]\\ | ||
| + | [[https://en.wikipedia.org/wiki/Kenorland]]\\ | ||
| + | |||
| + | ==== Arctica Supercontinent, 2.5B BCE ==== | ||
| + | |||
| + | [[https://en.wikipedia.org/wiki/Arctica]]\\ | ||
| ==== Vaalbara Supercontinent Breaks Up, 2.8B BCE ==== | ==== Vaalbara Supercontinent Breaks Up, 2.8B BCE ==== | ||
| Line 65: | Line 71: | ||
| [[http://phys.org/news/2012-06-earth-oldest-impact-crater-greenland.html]] | [[http://phys.org/news/2012-06-earth-oldest-impact-crater-greenland.html]] | ||
| + | [[https://en.wikipedia.org/wiki/Vaalbara]] | ||
| ==== Vaalbara (Ur) Supercontinent, 3.2B BCE ==== | ==== Vaalbara (Ur) Supercontinent, 3.2B BCE ==== | ||
earth/geohammers/b_bce_events.txt ยท Last modified: 2021/09/28 15:48 (external edit)
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