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Seawater carbon and strontium isotope variations through the late Ediacaran to late Cambrian in the Tarim Basin

文献类型：期刊论文

作者Zhang, Yinggang6; Yang, Tao6; Hohl, Simon, V1; Zhu, Bi7; He, Tianchen3,4,5; Pan, Wenqing2; Chen, Yongquan2; Yao, Xizhu6; Jiang, Shaoyong6,8
刊名PRECAMBRIAN RESEARCH
出版日期2020-08-01
卷号345页码:18
ISSN号0301-9268
关键词Carbon isotopes Strontium isotopes Ediacaran-Cambrian Tarim Basin Paleoenvironment
DOI10.1016/j.precamres.2020.105769
通讯作者Yang, Tao(yangtao@nju.edu.cn) ; Hohl, Simon, V(sv_hohl@tongji.edu.cn)
英文摘要The radiation of early animals during the Cambrian explosion was accompanied by widespread perturbations in oceanic and atmospheric conditions. However, the cause-effect relationships between evolutionary innovations, carbon (C) cycling, and continental weathering are still a matter of debate. Further paleoenvironmental reconstructions of poorly studied paleo-continents covering the Precambrian/Cambrian (PC/C) transition may improve the correlation of the events and their impact on the Earth system on a global scale. The Tarim Basin was presumably located proximal to the well-studied South China craton during the Ediacaran-Cambrian boundary and is expected to contribute equally to our paleoenvironmental reconstructions. Here we apply carbon and strontium (Sr) isotope records (delta C-13 and Sr-87/Sr-86) obtained from well-preserved marine carbonates spanning the late Ediacaran to the late Cambrian from the Keping region in the northwestern Tarim Basin, NW China. By comparison to other carbonate successions from various paleo-continents, our obtained seawater Sr-87/Sr-86 curve in this study shows a stepwise first-order increase to more radiogenic values superimposed by second-order presumably regional variations. Our obtained delta C-13 variations exhibit four prominent negative and three positive excursions identical to the global delta C-13 record. Based on existing paleontological evidence and our new Tarim delta C-13 and Sr-87/Sr-86 curves, we propose a stratigraphic correlation from the late Ediacaran to the late Cambrian between the Tarim Basin and other paleo-continents. Besides, our paleoenvironmental reconstruction reveals both regional and global sea-level changes that may have controlled the influx of radiogenic Sr and presumably the influx of nutrients controlling primary production and the rate of organic carbon burial in the Tarim Basin at the time of deposition. These feedbacks may have ultimately influenced the rapid diversification of metazoans and the oxygenation of the Cambrian ocean and atmosphere approaching-present pO(2) levels.
WOS关键词NORTHWEST CHINA IMPLICATIONS ; SMALL SHELLY FOSSILS ; 3 GORGES AREA ; YANGTZE PLATFORM ; SOUTH CHINA ; SR-ISOTOPE ; C-ISOTOPE ; NW CHINA ; TRANSITION EVIDENCE ; KEPING AREA
资助项目National Science and Technology Major Project of China[2016ZX05004-004] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS)[XDB26000000] ; National Natural Science Foundation of China[41650110480] ; National Natural Science Foundation of China[41750410690] ; National Natural Science Foundation of China[41888101] ; State Key Laboratory of Palaeobiology and Stratigraphy & Center for Excellence in Life and Paleoenvironment (Nanjing Institute of Geology and Palaeontology)[2018KF03]
WOS研究方向Geology
语种英语
出版者ELSEVIER
WOS记录号WOS:000538145800003
资助机构National Science and Technology Major Project of China ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy & Center for Excellence in Life and Paleoenvironment (Nanjing Institute of Geology and Palaeontology)
源URL[http://ir.nigpas.ac.cn/handle/332004/38622]  
专题中国科学院南京地质古生物研究所
通讯作者Yang, Tao; Hohl, Simon, V
作者单位1.Tongji Univ, Sch Ocean & Earth Sci, State Key Lab Marine Geol, Shanghai, Peoples R China
2.PetroChina, Tarim Oil Field Co, Res Inst Explorat & Dev, Korla, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing Inst Geol & Palaeontol, Nanjing, Peoples R China
4.Chinese Acad Sci, State Key Lab Palaeobiol & Stratig, Nanjing Inst Geol & Palaeontol, Nanjing, Peoples R China
5.Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England
6.Nanjing Univ, State Key Lab Mineral Deposits Res, Nanjing, Peoples R China
7.Hohai Univ, Sch Earth Sci & Engn, Nanjing, Peoples R China
8.China Univ Geosci, Sch Earth Resources, State Key Lab Geol Proc & Mineral Resources, Wuhan, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Yinggang,Yang, Tao,Hohl, Simon, V,et al. Seawater carbon and strontium isotope variations through the late Ediacaran to late Cambrian in the Tarim Basin[J]. PRECAMBRIAN RESEARCH,2020,345:18.
APA Zhang, Yinggang.,Yang, Tao.,Hohl, Simon, V.,Zhu, Bi.,He, Tianchen.,...&Jiang, Shaoyong.(2020).Seawater carbon and strontium isotope variations through the late Ediacaran to late Cambrian in the Tarim Basin.PRECAMBRIAN RESEARCH,345,18.
MLA Zhang, Yinggang,et al."Seawater carbon and strontium isotope variations through the late Ediacaran to late Cambrian in the Tarim Basin".PRECAMBRIAN RESEARCH 345(2020):18.

入库方式： OAI收割

来源：南京地质古生物研究所

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