Ordovician-Silurian true polar wander as a mechanism for severe glaciation and mass extinction.
Ordovician-Silurian true polar wander as a mechanism for severe glaciation and mass extinction.
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奥陶纪—志留纪真正的极移是严重冰川作用和大规模灭绝的机制
DOI：
10.1038/s41467-022-35609-3
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发表时间：
2022-12-26
影响因子：
16.6
通讯作者：
Wan, Bo
中科院分区：
文献类型：
--
作者：
Jing, Xianqing;Yang, Zhenyu;Mitchell, Ross N.;Tong, Yabo;Zhu, Min;Wan, Bo
奥陶纪-志留纪过渡期经历了严重但神秘的冰川作用，以及大规模灭绝和物种起源的矛盾组合。本文根据华南地区古地磁资料和各大洲可靠的古地磁资料，报道了发生在4.5亿~ 4.4亿年前的一次大而快的真极漂移（TPW）事件。总的来说，一个~50 ° C的大规模旋转与最大的大陆速度~55厘米yr-1被证明。多个孤立的大陆快速、同步、单向运动与板块相对运动的一致性和合理性都不如TPW。TPW控制古经度的古地理重建解释了冈瓦纳大陆冰川中心的时间和迁移，以及奥陶纪末期的大规模灭绝。全球正交模式的纬度变化在TPW进一步解释了为什么灭绝伴随着升高的起源水平，因为一些大陆迁移到或留在顺从的热带地区。华南地区的古地磁资料和其他四大洲可靠的古地磁资料显示，在4.5亿~ 4.4亿年前发生了一次约50万年的真极移事件。这一TPW事件席卷了冈瓦纳大陆，导致了奥陶纪的冰川作用和物种大灭绝。
The Ordovician–Silurian transition experienced severe, but enigmatic, glaciation, as well as a paradoxical combination of mass extinction and species origination. Here we report a large and fast true polar wander (TPW) event that occurred 450–440 million years ago based on palaeomagnetic data from South China and compiled reliable palaeopoles from all major continents. Collectively, a ~50˚ wholesale rotation with maximum continental speeds of ~55 cm yr−1 is demonstrated. Multiple isolated continents moving rapidly, synchronously, and unidirectionally is less consistent with and plausible for relative plate motions than TPW. Palaeogeographic reconstructions constrained by TPW controlling for palaeolongitude explain the timing and migration of glacial centers across Gondwana, as well as the protracted end-Ordovician mass extinction. The global quadrature pattern of latitude change during TPW further explains why the extinction was accompanied by elevated levels of origination as some continents migrated into or remained in the amenable tropics. Palaeomagnetic data from South China and compiled reliable palaeopoles from 4 other continents reveals a ~50˚ true polar wander (TPW) event occurring 450–440 million years ago. Sweeping Gondwana across the South Pole, this TPW event induced the Ordovician glaciation and mass extinction.
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DOI：
10.19615/j.cnki.1000-3118.200513
发表时间：
2020-01-01
期刊：
VERTEBRATA PALASIATICA
影响因子：
--
作者：
Cai Jia-Chen;Zhao Wen-Jin;Zhu Min
通讯作者：
Zhu Min
华南扬子地块晚奥陶世岩石古地磁新结果及其古地理意义
影响因子：
3.9
作者：
Han, Zhirui;Yang, Zhenyu;Jing, Xianqing
通讯作者：
Jing, Xianqing
影响因子：
3.8
作者：
Jean Antonio, Paul Yves;Ferreira Trindade, Ricardo Ivan;Tohver, Eric
通讯作者：
Tohver, Eric
影响因子：
64.8
作者：
Creveling, J. R.;Mitrovica, J. X.;Matsuyama, I.
通讯作者：
Matsuyama, I.
影响因子：
18.3
作者：
Longman, Jack;Mills, Benjamin J. W.;Palmer, Martin R.
通讯作者：
Palmer, Martin R.