earth:geohammers:b_bce_events
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earth:geohammers:b_bce_events [2018/10/29 16:46] khavikanum |
earth:geohammers:b_bce_events [2021/09/28 15:48] (current) |
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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. | ||
earth/geohammers/b_bce_events.1540831606.txt.gz ยท Last modified: 2018/10/29 16:46 by khavikanum
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