Evolution of sedimentary environments of the middle Jiangsu coast, South Yellow Sea since late MIS 3
  • 【摘要】

    An?evolutionary?model?of?sedimentary?environments?since?late?Marine?Isotope?Stage?3?(late?MIS?3,?i.e.,?ca.?39?cal?ka?BP)?along?the?middle?Jiangsu?coast?is?presented?based?upon?a?reinterpretation?of?co... 展开>>An?evolutionary?model?of?sedimentary?environments?since?late?Marine?Isotope?Stage?3?(late?MIS?3,?i.e.,?ca.?39?cal?ka?BP)?along?the?middle?Jiangsu?coast?is?presented?based?upon?a?reinterpretation?of?core?07SR01,?new?correlations?between?adjacent?published?cores,?and?shallow?seismic?profiles?recovered?in?the?Xiyang?tidal?channel?and?adjacent?northern?sea?areas.?Geomorphology,?sedimentology,?radiocarbon?dating?and?seismic?and?sequence?stratigraphy?are?combined?to?confirm?that?environmental?changes?since?late?MIS?3?in?the?study?area?were?controlled?primarily?by?sea-level?fluctuations,?sediment?discharge?of?paleo-rivers?into?the?South?Yellow?Sea?(SYS),?and?minor?tectonic?subsidence,?all?of?which?impacted?the?progression?of?regional?geomorphic?and?sedimentary?environments?(Le.,?coastal?barrier?island?freshwater?lacustrine?swamp,?river?floodplain,?coastal?marsh,?tidal?sand?ridge,?and?tidal?channel).?This?resulted?in?the?formation?of?a?fifth-order?sequence?stratigraphy,?comprised?of?the?parasequence?of?the?late?stage?of?the?last?interstadial?(Para-Sq2),?including?the?highstand?and?forced?regressive?wedge?system?tracts?(HST?and?FRWST),?and?the?parasequence?of?the?postglacial?period?(Para-Sql),?including?the?transgressive?and?highstand?system?tracts?(TST?and?HST).?The?tidal?sand?ridges?likely?began?to?develop?during?the?postglacial?transgression?as?sea-level?rise?covered?the?middle?Jiangsu?coast?at?ca.?9.0?cal?ka?BP.?These?initially?submerged?tidal?sand?ridges?were?constantly?migrating?until?the?southward?migration?of?the?Yellow?River?mouth?to?the?northern?Jiangsu?coast?during?AD?1128?to?1855.?The?paleo-Xiyang?tidal?channel?that?was?determined?by?the?paleo-tidal?current?field?and?significantly?different?from?the?modern?one,?was?in?existence?during?the?Holocene?transgressive?maxima?and?lasted?until?AD?1128.?Following?the?capture?of?the?Huaihe?River?in?AD?1128?by?the?Yellow?River,?the?paleo-Xiyang?tidal?channel?was?infilled?with?a?large?amount?of?river-derived?sediments?from?AD?1128?to?1855,?causing?the?emergence?of?some?of?the?previously?submerged?tidal?sand?ridges.?From?AD?1855?to?the?present,?the?infilled?paleo-Xiyang?tidal?channel?has?undergone?scouring,?resulting?in?its?modern?form.?The?modern?Xiyang?tidal?channel?continues?to?widen?and?deepen,?due?both?to?strong?tidal?current?scouring?and?anthropogenic?activities. 收起<<

  • 【作者】

    XIA Fei  ZHANG Yongzhan  WANG Qiang  YIN Yong  Karl W. WEGMANN  J. Paul LIU 

  • 【作者单位】

    Department of Coastal Ocean Science/The Key Laboratory of Coastal and Island Development/Department of Marine/Tianjin Institute of Geology and Mineral Resources

  • 【刊期】

    地理学报(英文版) ISTIC 2013年5期

  • 【关键词】

    江苏沿海  沉积环境  冰后期  MIS  南黄海  高水位体系域  潮汐通道  潮流沙脊  Marine Isotope Stage 3 (MIS 3)  South Yellow Sea  middle Jiangsu coast  tidal sand ridge  tidal channel  sedimentary environment  radiocarbon dating  seismic stratigraphy  sequence stratigraphy 

  • 【基金项目】

    National Basic Research Program of China (973Program), No.2013CB956500 National Natural Science Foundation of China, Nos.40776023&40872107 Comprehensive Investigation and Assessment in Jiangsu Offshore Area, Nos.JS-908-01-05& JS-908-01-101 Special Fund for Marine Scientific Research in the Public Interest, No.201005006 Special Fund for Land and Resources Research in the Public Interest, No.201011019 China State-Sponsored Postgraduate Study Aboard Program, No.2011619035Acknowledgements This paper is derived from the first author's Ph.D. thesis. The sedimentary facies analysis of core07SR01was supervised by Prof. Wang Ying. The identification of calcareous nannofossils of core07SR01was accomplished by Prof. Zou Xinqing. Prof. Gao Shu, Zhao Songling and Associate Prof. Han Zhiyong made marly constructive comments on this paper. Two anonymous referees also gave a lot of valuable suggestions for the further revision. Dr. Li Gang and Mr. Huang Jiaxiang participated in the field work. Dr. Li Gang, Dr. Sun Zhuyou, Mr. Xu Liang, Miss. Zhang Ning, Mr. Ge Song, Miss. Gao Minqin, Miss. Liu Qun and Miss. Du Liqiong participated in the analysis of sedimentary facies and subsampling of core07SR01. Dr. Sun Zhuyou and Miss. Zhang Ning also did some laboratory work of sample tests. We are extremely grateful to the above persons who helped us a lot for this study.