| Sequence Boundary and Sea Level Changes in Western Margin of Upper Yangtze Platform during Permian and Triassic |
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| 作者姓名： | Xu Xiaosong Liu Baojun Zhao Yuguang |
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| 作者单位： | Chengdu Institute of Geology and Mineral Resources，CAGS，Chengdu 610082 |
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| 摘 要： | TECTONICac~ac~~RA~m~NERGoorU~YANG~~oafNdsreof~actTheho~ofUPperYangtzePlatformwascpetallizedandconsolidatedinthekiaogUanhernovernentofMeSoproterocoic(ca.1700mp.ItconstituteSthestableCentralSichuanconiinelhalnucleusandthecratonakin.Therearetabtabofcontinental~ionsurroUndingtheCentralSichuanconti~alnuCleusduring1700--800the.ThebordersofthecontinentalaCCretionareconcordantacthebordersof~nicandPalcogngnphy,andalsofo~theboundarybet~basin~formationS.InPaloocoic,tab~nicCycleScormspond…
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Sequence Boundary and Sea Level Changes in Western Margin of Upper Yangtze Platform during Permian and Triassic |
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| Xu Xiaosong Liu Baojun Zhao Yuguang.Sequence Boundary and Sea Level Changes in Western Margin of Upper Yangtze Platform during Permian and Triassic[J].Journal of China University of Geosciences,1996(1). |
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| Authors: | Xu Xiaosong Liu Baojun Zhao Yuguang |
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| Abstract: | During Permian and Triassic the western margin of Upper Yangtze platform had experienced an evolution from early rift stage to thermal subsidence and then to foreland basin. The tectonic transformations have resulted in five supersequences and nineteen third-order se- quences.During the rift stage,transgeressive carbonate platform was built up,while in the thermal subsidence stage,regressive carbonate platform with foreslope was formed.The closure of the Garze-Litang narrow oceanic basin resulted in the migration of foreland flexure toward the ctaton.The carbonate ramp in foreland basin setting was formed during the relative sea level rise which was caused by the change in basin volume. |
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| Keywords: | Upper Yangtze platform Permian Triassic sequence boundary eustasy |
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