Reduced plate motion controlled timing of Early Jurassic Karoo-Ferrar large igneous province volcanism.
Reduced plate motion controlled timing of Early Jurassic Karoo-Ferrar large igneous province volcanism.
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早期的侏罗纪Karoo-ferrar大型火山省火山的板板运动减少了。
DOI：
10.1126/sciadv.abo0866
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发表时间：
2022-09-09
期刊：
影响因子：
13.6
通讯作者：
中科院分区：
文献类型：
--
作者：
过去的大火成岩省(LIP)侵位通常与地幔热柱上涌有关，并导致主要的碳排放。地球过去最大的环境扰动之一，托阿尔西亚海洋缺氧事件(T-OAE；~183 Ma)，与Karoo-Ferrar嘴唇侵位有关。然而，地幔热柱在控制嘴唇岩浆活动的开始和时间方面的作用还知之甚少。利用全球板块重建模型和下托阿西期沉积汞(Hg)浓度，我们证明(I)T-OAE与Karoo-Ferrar侵位同步发生，(Ii)LIP侵位的时间和持续时间受板块运动方向逆转的潘吉板块运动减弱的支配。这一新的模型将地球内部和地表的过程机械地联系在一起，并且该机制与地球历史上几个最大的唇状火山事件的发生时间一致，从而与地球过去许多全球气候变化和大灭绝事件的发生时间一致。减少的板块运动控制了过去主要火山事件以及相关的气候扰动和大灭绝的时间。
Past large igneous province (LIP) emplacement is commonly associated with mantle plume upwelling and led to major carbon emissions. One of Earth’s largest past environmental perturbations, the Toarcian oceanic anoxic event (T-OAE; ~183 Ma), has been linked to Karoo-Ferrar LIP emplacement. However, the role of mantle plumes in controlling the onset and timing of LIP magmatism is poorly understood. Using global plate reconstruction models and Lower Toarcian sedimentary mercury (Hg) concentrations, we demonstrate (i) that the T-OAE occurred coevally with Karoo-Ferrar emplacement and (ii) that timing and duration of LIP emplacement was governed by reduced Pangean plate motion, associated with a reversal in plate movement direction. This new model mechanistically links Earth’s interior and surficial processes, and the mechanism is consistent with the timing of several of the largest LIP volcanic events throughout Earth history and, thus, the timing of many of Earth’s past global climate change and mass extinction events. Reduced plate motion controlled timing of past major volcanic events and associated climatic perturbations and mass extinctions.
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影响因子：
4.6
作者：
Al-Suwaidi AH;Ruhl M;Jenkyns HC;Damborenea SE;Manceñido MO;Condon DJ;Angelozzi GN;Kamo SL;Storm M;Riccardi AC;Hesselbo SP
通讯作者：
Hesselbo SP
影响因子：
3.5
作者：
Emry, E. L.;Shen, Y.;Bao, X.
通讯作者：
Bao, X.
影响因子：
3.5
作者：
Bonadio, Raffaele;Geissler, Wolfram H.;Baba, Kiyoshi
通讯作者：
Baba, Kiyoshi
DOI：
10.1016/j.palaeo.2011.04.018
发表时间：
2011-06-15
影响因子：
3
作者：
Gomez, Juan J.;Goy, Antonio
通讯作者：
Goy, Antonio
影响因子：
16.6
作者：
Celli, Nicolas Luca;Lebedev, Sergei;Gaina, Carmen
通讯作者：
Gaina, Carmen