文献类型：期刊文献

英文题名：Intensifying aeolian activity following the end-Permian mass extinction: Evidence from the Late Permian-Early Triassic terrestrial sedimentary record of the Ordos Basin, North China

作者：Zhu Zhicai[1];Kuang Hongwei[1];Liu Yongqing[1];Benton, Michael J.[2];Newell, Andrew J.[3];Xu Huan[4];An Wei[5];Ji Shu'an[1];Xu Shichao[6];Peng Nan[1];Zhai Qingguo[1]

机构：[1]Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China;[2]Univ Bristol, Sch Earth Sci, Bristol BS8 1RJ, Avon, England;[3]British Geol Survey, Maclean Bldg, Wallingford OX10 8BB, Oxon, England;[4]East China Univ Sci & Technol, Coll Earth Sci, Nanchang 330013, Jiangxi, Peoples R China;[5]Chinese Acad Sci, Inst Elect, Suzhou 215123, Jiangsu, Peoples R China;[6]Shanxi Museum Geol, Taiyuan 030024, Peoples R China

年份：2020

卷号：67

期号：5

起止页码：2691

外文期刊名：SEDIMENTOLOGY

收录：;EI(收录号：20201608422470);WOS:【SCI-EXPANDED(收录号:WOS:000526014500001)】；

基金：We thank Runfu Wang, Suozhu Wang, Jian Yi, Liyang Dong, Peilin Xue and Gaowen Jia of Shanxi Museum of Geology for their help in the field. This study was supported by the National Key Research and Development Program of China (Grant No. 2018YFC0604201), the National Science Foundation of China (Grant Nos. 41688103 and 41672111), the China Geological Survey Project (Grant Nos. DD20190005 and DD20160120-03) and the Natural Environment Research Council, UK (Grant No. NE/P013724/). Insightful comments and suggestions from Chief Editor Dr Ian Kane, Associate Editor Dr Subhasish Dey and three anonymous reviewers are greatly appreciated.

语种：英文

外文关键词：Aeolian; fluvial; mass extinction; North China; palaeoclimate; palaeoecology; Permian-Triassic; recovery

摘要：Sedimentary successions provide direct evidence of climate and tectonics, and these give clues about the causes of the mass extinction around the Permian-Triassic boundary. Terrestrial Permian-Triassic boundary strata in the eastern Ordos Basin, North China, include the Late Permian Sunjiagou, Early Triassic Liujiagou and late Early Triassic Heshanggou formations in ascending order. The Sunjiagou Formation comprises cross-bedded sandstones overlaid by mudstones, indicating meandering rivers with channel, point bar and floodplain deposits. The Liujiagou Formation was formed in braided rivers of arid sand bars interacting with some aeolian dune deposits, distinguished by abundant sandstones where diverse trough and planar cross-bedding and aeolian structures (for example, inverse climbing-ripple, translatent-ripple lamination, grainfall and grainflow laminations) interchange vertically and laterally. The Heshanggou Formation is a rhythmic succession of mudstones interbedded with thin medium-grained sandstones mainly deposited in a shallow lacustrine environment. Overall, the sharp meandering to braided to shallow lake sedimentary transition documents palaeoenvironmental changes from semi-arid to arid and then to semi-humid conditions across the Permian-Triassic boundary. The die-off of tetrapods and plants, decreased bioturbation levels in the uppermost Sunjiagou Formation, and the bloom of microbially-induced sedimentary structures in the Liujiagou Formation marks the mass extinction around the Permian-Triassic boundary. The disappearance of microbially-induced sedimentary structures, increasingly intense bioturbation from bottom to top and the reoccurrence of reptile footprints in the Heshanggou Formation reveal gradual recovery of the ecosystem after the Permian-Triassic boundary extinction. This study is the first to identify the intensification of aeolian activity following the end-Permian mass extinction in North China. Moreover, while northern North China continued to be uplifted tectonically from the Late Palaeozoic to Late Mesozoic, the switch of sedimentary patterns across the Permian-Triassic boundary in Shanxi is largely linked to the development of an arid and subsequently semi-humid climate condition, which probably directly affected the collapse and delayed recovery in palaeoecosystems.