Jurassic integrative stratigraphy,biotas,and paleogeographical evolution of the Qinghai-Tibetan Plateau and its surrounding areas
作者机构:Center for Excellence in Life and PaleoenvironmentNanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008China Nanjing CollegeUniversity of Chinese Academy of SciencesNanjing 211135China
出 版 物:《Science China Earth Sciences》 (中国科学(地球科学英文版))
年 卷 期:2024年第67卷第4期
页 面:1195-1228页
核心收录:
学科分类:070903[理学-古生物学与地层学(含:古人类学)] 0709[理学-地质学] 07[理学] 0708[理学-地球物理学]
基 金:supported by the Second Tibetan Plateau Scientific Expedition and Research(Grant No.2019QZKK0706) the National Natural Science Foundation of China(Grant Nos.42372019,41888101,41872004,42272027,42288201,42172028) the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant Nos.XDB26000000,XDA2007020203)
主 题:Biostratigraphy Chronostratigraphy Correlation Yarlung Zangbo suture Bangong Co-Nujiang suture Tethys
摘 要:The Qinghai-Tibetan Plateau experienced a unique geological evolution during the Jurassic,driven by the termination of the Palaeotethys and the reduction of the *** Indian Plate separated from the northern margin of Gondwana and drifted northward from the Southern *** that the timing of strata serves as the basis for reconstructing geological history,the present work aimed to develop a new multiple stratigraphic and chronologic framework for the Jurassic strata of the Qinghai-Tibetan Plateau region via a synthesis of the material on lithostratigraphy,palaeontology,iso-radiometric dating,magnetostratigraphy,and other techniques with an emphasis on recent progress and *** new framework included the Jurassic System from the four major subdivisions of the plateau:the Baryan Har,Qiangtang,Lhasa-Gandise,and Southern Xizang(Himalaya).Ultimately,a more complete,refined biostratigraphic sequence was proposed,comprising the most common fossils in the plateau and those that are stratigraphically significant for the Jurassic stratigraphy,including ammonites,bivalves,brachiopods,foraminifera,radiolarians,and dinoflagellate cysts for the marine strata,and pollen and spores,and charophytes for the terrestrial *** biostratigraphic framework was correlated with the Jurassic international standard zonation of the Geological Time Scale 2020 via standard or representative species or genera of *** on this framework,we constructed a lateral correlation of the Jurassic strata between different basins of the *** palaeontologic correlation in the present work shows that the Lhasa-Gandise Block had a closer relationship with the Qiangtang Block than with the Southern Xizang Himalaya during the Jurassic ***,the Lhasa-Gandise Block and Qiangtang Block shared similar marine fauna features of the north marginal East *** contrasts the opinion suggesting that the Yarlung Zangbo Tethys was a small back-arc basin.A c