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Reduced plate motion controlled timing of Early Jurassic Karoo-Ferrar large igneous province volcanism
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, t...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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American Association for the Advancement of Science
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9462690/ https://www.ncbi.nlm.nih.gov/pubmed/36083904 http://dx.doi.org/10.1126/sciadv.abo0866 |
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author | Ruhl, Micha Hesselbo, Stephen P. Jenkyns, Hugh C. Xu, Weimu Silva, Ricardo L. Matthews, Kara J. Mather, Tamsin A. Mac Niocaill, Conall Riding, James B. |
author_facet | Ruhl, Micha Hesselbo, Stephen P. Jenkyns, Hugh C. Xu, Weimu Silva, Ricardo L. Matthews, Kara J. Mather, Tamsin A. Mac Niocaill, Conall Riding, James B. |
author_sort | Ruhl, Micha |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-9462690 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-94626902022-09-23 Reduced plate motion controlled timing of Early Jurassic Karoo-Ferrar large igneous province volcanism Ruhl, Micha Hesselbo, Stephen P. Jenkyns, Hugh C. Xu, Weimu Silva, Ricardo L. Matthews, Kara J. Mather, Tamsin A. Mac Niocaill, Conall Riding, James B. Sci Adv Earth, Environmental, Ecological, and Space Sciences 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. American Association for the Advancement of Science 2022-09-09 /pmc/articles/PMC9462690/ /pubmed/36083904 http://dx.doi.org/10.1126/sciadv.abo0866 Text en Copyright © 2022 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Earth, Environmental, Ecological, and Space Sciences Ruhl, Micha Hesselbo, Stephen P. Jenkyns, Hugh C. Xu, Weimu Silva, Ricardo L. Matthews, Kara J. Mather, Tamsin A. Mac Niocaill, Conall Riding, James B. Reduced plate motion controlled timing of Early Jurassic Karoo-Ferrar large igneous province volcanism |
title | Reduced plate motion controlled timing of Early Jurassic Karoo-Ferrar large igneous province volcanism |
title_full | Reduced plate motion controlled timing of Early Jurassic Karoo-Ferrar large igneous province volcanism |
title_fullStr | Reduced plate motion controlled timing of Early Jurassic Karoo-Ferrar large igneous province volcanism |
title_full_unstemmed | Reduced plate motion controlled timing of Early Jurassic Karoo-Ferrar large igneous province volcanism |
title_short | Reduced plate motion controlled timing of Early Jurassic Karoo-Ferrar large igneous province volcanism |
title_sort | reduced plate motion controlled timing of early jurassic karoo-ferrar large igneous province volcanism |
topic | Earth, Environmental, Ecological, and Space Sciences |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9462690/ https://www.ncbi.nlm.nih.gov/pubmed/36083904 http://dx.doi.org/10.1126/sciadv.abo0866 |
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