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Revised magnetostratigraphy of the Linxia Basin in the northeast Tibetan Plateau, constrained by micromammalian fossils

文献类型：期刊论文

作者Zheng, Yan2; Qiu, Zhanxiang2; Qiu, Zhuding2; Li, Lu2; Wei, Xiaohao1; Zhang, Riu1; Yue, Leping1; Deng, Tao2
刊名PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
出版日期2023-08-01
卷号623页码:16
关键词Magnetostratigraphy Mammalian faunas Oligocene Miocene Linxia Basin
ISSN号0031-0182
DOI10.1016/j.palaeo.2023.111620
通讯作者Zheng, Yan(zhengyan@ivpp.ac.cn) ; Deng, Tao(dengtao@ivpp.ac.cn)
英文摘要The Linxia Basin along the northeastern margin of the Tibetan Plateau has drawn enormous attention due to its rich mammalian fossils and great potential for exploring regional tectonics, paleoenvironmental history, and bioevolution. However, the geochronology of the sedimentary sequences is in great dispute owing to uncertain lithostratigraphic correlation and poorly calibrated magnetostratigraphy. From 2017 to 2021, we carried out lithostratigraphic correlation of the strata from the southern part of the basin, which is rich in fossils, to the Maogou section in the central basin, and established a solid intra-basinal lithostratigraphic framework with accurate fossil locations. Then, high-resolution magnetostratigraphic investigations were performed on the Maogou section, which comprises, from oldest to youngest, the Jiaozigou, Shangzhuang, Dongxiang, Liushu/ Hujialiang, and "Liushu" formations. Magnetostratigraphic results show that the Maogou sedimentary sequence (from Jiaozigou to Liushu/Hujialiang formations) spans from chron C10r to chron C5r.2n, yielding an age of 29-11.6 Ma, with constraints from four mammalian assemblage levels. The revised magnetostratigraphy indicates that the Jiaozigou Formation corresponds to chrons C6Cn.3n-C10r (similar to 23-29 Ma), with Paraceratherium fauna from the lower Jiaozigou Formation being determined as similar to 29 Ma, and that the Hujialiang Formation, containing Platybelodon fauna, corresponds to chrons C5r.2n-C5Ar.2r (similar to 11.6-12.8 Ma). The revised magnetostratigraphy of the Maogou section has significantly refined the chronology of the Linxia Basin sedimentary sequences and its associated mammalian evolution, tectonism, and climate change in Central Asia.
WOS关键词MA
资助项目Key Project of Frontier Science Research of the Chinese Academy of Sciences[41974079] ; National Natural Science Foundation of China (NSFC)[41991323] ; National Natural Science Foundation of China (NSFC)[2022YFF0801502] ; National Key R and D project ; [QYZDY-SSW-DQC002]
WOS研究方向Physical Geography ; Geology ; Paleontology
语种英语
WOS记录号WOS:001057770500001
出版者ELSEVIER
资助机构Key Project of Frontier Science Research of the Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Key R and D project
源URL[http://119.78.100.205/handle/311034/22917]  
专题中国科学院古脊椎动物与古人类研究所
通讯作者Zheng, Yan; Deng, Tao
作者单位1.Northwest Univ, Inst Cenozo Geol & Environm, Dept Geol, State Key Lab Continental Dynam, Xian, Peoples R China
2.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China
推荐引用方式
GB/T 7714		 Zheng, Yan,Qiu, Zhanxiang,Qiu, Zhuding,et al. Revised magnetostratigraphy of the Linxia Basin in the northeast Tibetan Plateau, constrained by micromammalian fossils[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2023,623:16.
APA Zheng, Yan.,Qiu, Zhanxiang.,Qiu, Zhuding.,Li, Lu.,Wei, Xiaohao.,...&Deng, Tao.(2023).Revised magnetostratigraphy of the Linxia Basin in the northeast Tibetan Plateau, constrained by micromammalian fossils.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,623,16.
MLA Zheng, Yan,et al."Revised magnetostratigraphy of the Linxia Basin in the northeast Tibetan Plateau, constrained by micromammalian fossils".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 623(2023):16.

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来源：古脊椎动物与古人类研究所

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