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Biological extinction and photic-zone anoxia across the Triassic-Jurassic transition; insights from the Qiangtang Basin, eastern Tethys

Hu Fangzhi, Hu Fangzhi ; Fu Xiugen, Fu Xiugen ; Wang Jian, Wang Jian ; Wei Hengye, Wei Hengye ; Nie Ying, Nie Ying ; Zhang Jian, Zhang Jian ; Tian Kangzhi, Tian Kangzhi

Journal of the Geological Society, 2023-09, Vol.180 (5), p.1 [Revista revisada por pares]

Oxford: Geological Society of London

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Biological extinction and photic-zone anoxia across the Triassic-Jurassic transition; insights from the Qiangtang Basin, eastern Tethys
Autor: Hu Fangzhi, Hu Fangzhi ; Fu Xiugen, Fu Xiugen ; Wang Jian, Wang Jian ; Wei Hengye, Wei Hengye ; Nie Ying, Nie Ying ; Zhang Jian, Zhang Jian ; Tian Kangzhi, Tian Kangzhi
Materias: anaerobic environment ; Anoxia ; Asia ; Biodiversity ; Biodiversity loss ; biostratigraphy ; Bivalvia ; Brachiopoda ; Catastrophic events ; chemical composition ; China ; Far East ; framboidal texture ; Geochemistry ; grain size ; invertebrate ; Jurassic ; Lower Jurassic ; Marine animals ; Marine invertebrates ; Marine sediments ; Mass extinctions ; Mesozoic ; microfacies ; Mollusca ; Mollusks ; Palaeoenvironments ; Palaeontology and geobiology ; Paleoceanography ; Paleontology ; Pyrite ; Qiangtang Basin ; sediments ; Shellfish ; Species extinction ; stratigraphic boundary ; Stratigraphy ; sulfides ; Tethys ; textures ; Trace elements ; Triassic ; Triassic-Jurassic boundary ; Upper Triassic ; Wenquan China ; Xizang China
Es parte de: Journal of the Geological Society, 2023-09, Vol.180 (5), p.1
Descripción: The end-Triassic mass extinction (ETME) is one of the five catastrophic extinction events. However, the driving mechanisms of biodiversity loss during this interval remain controversial. In this study, we investigate the marine sediment geochemistry and fauna across the Triassic-Jurassic boundary in the Wenquan section of Qiangtang Basin, and the triggering mechanism of the Late Triassic extinction in the eastern Tethys Ocean. Our study shows that the main pulse of the ETME occurred in Bed 8, manifesting as the disappearance of four brachiopod species, a significant decrease of other faunas, and the "Lilliput Effect" on bivalves. Analyses of pyrite framboids and redox-sensitive trace elements, suggest the development of photic zone anoxia near the T/J boundary and coincident with the Late Triassic extinction. Thus, the development of abrupt and intense photic-zone anoxia could play an important role in the end-Triassic extinction. Supplementary material: https://doi.org/10.6084/m9.figshare.c.6771606
Editor: Oxford: Geological Society of London
Idioma: Inglés

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Biological extinction and photic-zone anoxia across the Triassic-Jurassic transition; insights from the Qiangtang Basin, eastern Tethys

Hu Fangzhi, Hu Fangzhi ; Fu Xiugen, Fu Xiugen ; Wang Jian, Wang Jian ; Wei Hengye, Wei Hengye ; Nie Ying, Nie Ying ; Zhang Jian, Zhang Jian ; Tian Kangzhi, Tian Kangzhi

Oxford: Geological Society of London

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