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      Felsic volcanism as a factor driving the end-Permian mass extinction

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          Composition of the Continental Crust

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            Precise analysis of copper and zinc isotopic compositions by plasma-source mass spectrometry

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              High-precision timeline for Earth's most severe extinction.

              The end-Permian mass extinction was the most severe loss of marine and terrestrial biota in the last 542 My. Understanding its cause and the controls on extinction/recovery dynamics depends on an accurate and precise age model. U-Pb zircon dates for five volcanic ash beds from the Global Stratotype Section and Point for the Permian-Triassic boundary at Meishan, China, define an age model for the extinction and allow exploration of the links between global environmental perturbation, carbon cycle disruption, mass extinction, and recovery at millennial timescales. The extinction occurred between 251.941 ± 0.037 and 251.880 ± 0.031 Mya, an interval of 60 ± 48 ka. Onset of a major reorganization of the carbon cycle immediately precedes the initiation of extinction and is punctuated by a sharp (3‰), short-lived negative spike in the isotopic composition of carbonate carbon. Carbon cycle volatility persists for ∼500 ka before a return to near preextinction values. Decamillenial to millennial level resolution of the mass extinction and its aftermath will permit a refined evaluation of the relative roles of rate-dependent processes contributing to the extinction, allowing insight into postextinction ecosystem expansion, and establish an accurate time point for evaluating the plausibility of trigger and kill mechanisms.
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                Author and article information

                Contributors
                Journal
                Science Advances
                Sci. Adv.
                American Association for the Advancement of Science (AAAS)
                2375-2548
                November 19 2021
                November 19 2021
                : 7
                : 47
                Affiliations
                [1 ]LPS, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Nanjing 210008, China.
                [2 ]State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering and Environment and Frontiers Science Center for Critical Earth Material Cycling, Nanjing University, Nanjing 210023, China.
                [3 ]Institute of Surface-Earth System Science, Tianjin University, 92 Weijin Road, Tianjin 300072, China.
                [4 ]Department of Paleobiology, MRC-121 National Museum of Natural History, P.O. Box 37012, Washington, DC 20013-7012, USA.
                [5 ]Santa Fe Institute, 1399 Hyde Park Road, Santa Fe, NM 87501, USA.
                [6 ]Department of Earth and Planetary Sciences, Yale University, New Haven, CT 06511, USA.
                [7 ]Departments of Biology and Environmental Studies, New York University, New York, NY 10003, USA.
                [8 ]State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China.
                [9 ]Institute of Deep Time Terrestrial Ecology and Institute of Palaeontology, Yunnan University, Kunming 650500, China.
                [10 ]Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China.
                [11 ]Department of Earth and Environmental Studies, Montclair State University, Montclair, NJ 07043, USA.
                [12 ]State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China.
                [13 ]State Key Laboratory of Isotope Geochemistry and Center of Excellence in Deep Earth Science, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
                [14 ]Key Laboratory of Continental Collision and Plateau Uplift, Institute of Tibetan Plateau Research and Center for Excellence in Tibetan Plateau Earth Sciences, Chinese Academy of Sciences, Beijing 100101, China.
                Article
                10.1126/sciadv.abh1390
                4723f280-a37a-4dd2-935e-e070b219ebc8
                © 2021
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