Early Wuchiapingian cooling linked to Emeishan basaltic weathering? | |
Yang, Jianghai1,2; Cawood, Peter A.3; Du, Yuansheng1,2; Condon, Daniel J.4; Yan, Jiaxin1,2; Liu, Jianzhong5; Huang, Yan1,2; Yuan, Dongxun (袁东勋)6 | |
刊名 | EARTH AND PLANETARY SCIENCE LETTERS |
2018-06-15 | |
卷号 | 492页码:102-111 |
关键词 | Late Paleozoic Ice Age South China Weathering Trends Early Wuchiapingian Cooling Emeishan Large Igneous Province |
ISSN号 | 0012-821X |
DOI | 10.1016/j.epsl.2018.04.004 |
英文摘要 | The last glaciation during the late Paleozoic ice age commenced at around the Guadalupian-Lopingian (G-L) boundary and is synchronous with the emplacement of the Emeishan large igneous province. Using CA-TIMS zircon U-Pb dating, we obtained an age of 259.51 +/- 0.21 Ma for the uppermost tuff from the Puan volcanic sequence in the eastern Emeishan large igneous province, constraining the timing of Emeishan volcanism and providing another candidate age for the G-L boundary. In addition, we determined an age of 259.69 +/- 0.72 Ma for a basal claystone in the immediately overlying Longtan Formation from a drill core section in southwest South China. These ages, along with source weathering trends of mudstones from the lower Longtan Formation, and compiled paleotemperature records, indicate an earliest Wuchiapingian cooling coinciding with the onset of the last Permian glaciation. This global cooling is associated with positive shifts in both organic and carbonate carbon isotopic records and likely a decrease in atmospheric pCO(2). A hypothesised causal linkage is proposed in which the rapid post eruptive basaltic weathering of the Emeishan province in an equatorial humid belt may accelerate the atmospheric CO2 consumption and lead to climate cooling. Our work supports the long-term climate cooling effects of large igneous provinces. (C) 2018 Elsevier B.V. All rights reserved. |
资助项目 | National Science Foundation of China[41572078] ; 111 Project[B08030] ; fundamental Research Funds for the Central Universities[CUG160604] ; Australian Research Council[FL160100168] ; Hubei Chenguang Talented Youth Development Foundation |
WOS关键词 | Large Igneous Province ; Paleozoic Ice-age ; Plume-lithosphere Interaction ; Permian-triassic Boundary ; U-pb Age ; Sw China ; Eastern Australia ; Mass Extinction ; South China ; Global Climate |
WOS研究方向 | Geochemistry & Geophysics |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE BV |
WOS记录号 | WOS:000432762000010 |
资助机构 | National Science Foundation of China ; 111 Project ; fundamental Research Funds for the Central Universities ; Australian Research Council ; Hubei Chenguang Talented Youth Development Foundation |
内容类型 | 期刊论文 |
源URL | [http://ir.nigpas.ac.cn/handle/332004/18662] |
专题 | 中国科学院南京地质古生物研究所 南京地质古生物研究所_其他 |
通讯作者 | Yang, Jianghai |
作者单位 | 1.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Hubei, Peoples R China 2.China Univ Geosci, Sch Earth Sci, Wuhan 430074, Hubei, Peoples R China 3.Monash Univ, Sch Earth Atmosphere & Environm, Melbourne, Vic 3800, Australia 4.British Geol Survey, NERC Isotope Geosci Lab, Keyworth NG12 5GG, Notts, England 5.Bur Geol & Mineral Explorat & Dev Guizhou Prov, Guiyang 550000, Guizhou, Peoples R China 6.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Yang, Jianghai,Cawood, Peter A.,Du, Yuansheng,et al. Early Wuchiapingian cooling linked to Emeishan basaltic weathering?[J]. EARTH AND PLANETARY SCIENCE LETTERS,2018,492:102-111. |
APA | Yang, Jianghai.,Cawood, Peter A..,Du, Yuansheng.,Condon, Daniel J..,Yan, Jiaxin.,...&Yuan, Dongxun .(2018).Early Wuchiapingian cooling linked to Emeishan basaltic weathering?.EARTH AND PLANETARY SCIENCE LETTERS,492,102-111. |
MLA | Yang, Jianghai,et al."Early Wuchiapingian cooling linked to Emeishan basaltic weathering?".EARTH AND PLANETARY SCIENCE LETTERS 492(2018):102-111. |
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