文献类型：期刊文献

英文题名：Altered fluvial patterns in North China indicate rapid climate change linked to the Permian-Triassic mass extinction

作者：Zhu, Zhicai[1];Liu, Yongqing[1];Kuang, Hongwei[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, Shanxi, Peoples R China

年份：2019

卷号：9

外文期刊名：SCIENTIFIC REPORTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000496416000028)】；

基金：We thank R. F. Wang, S. Z. Wang, J. Yi, L. Y. Dong and P. L. Xue 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), and the China Geological Survey Project (Grant Nos. DD20190005 and DD20160120-03), as well as NERC grant NE/P013724/1 to M.J.B.

语种：英文

摘要：The causes of the severest crisis in the history of life around the Permian-Triassic boundary (PTB) remain controversial. Here we report that the latest Permian alluvial plains in Shanxi, North China, went through a rapid transition from meandering rivers to braided rivers and aeolian systems. Soil carbonate carbon isotope (delta C-13), oxygen isotope (delta O-18), and geochemical signatures of weathering intensity reveal a consistent pattern of deteriorating environments (cool, arid, and anoxic conditions) and climate fluctuations across the PTB. The synchronous ecological collapse is confirmed by a dramatic reduction or disappearance of dominant plants, tetrapods and invertebrates and a bloom of microbially-induced sedimentary structures. A similar rapid switch in fluvial style is seen worldwide (e.g. Karoo Basin, Russia, Australia) in terrestrial boundary sequences, all of which may be considered against a background of global marine regression. The synchronous global expansion of alluvial fans and high-energy braided streams is a response to abrupt climate change associated with aridity, hypoxia, acid rain, and mass wasting. Where neighbouring uplands were not uplifting or basins subsiding, alluvial fans are absent, but in these areas the climate change is evidenced by the disruption of pedogenesis.