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首页> 外文期刊>Quaternary International >Magnetostratigraphy and luminescence dating on a sedimentary sequence from northern East China Sea: Constraints on evolutionary history of eastern marginal seas of China since the Early Pleistocene
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Magnetostratigraphy and luminescence dating on a sedimentary sequence from northern East China Sea: Constraints on evolutionary history of eastern marginal seas of China since the Early Pleistocene

机译：东海北部沉积序列的磁地层学和发光年代：自更新世以来中国东部边缘海演化史的限制

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摘要

Owing to the large and increasing population density in low-lying coastal regions, even small changes in sea level can have substantial societal and economic impacts. Alternations of terrestrial and marine sediments deposited in coastal areas or continental shelves are important and effective indicators of sea-level changes, and thus, have been widely studied in the marginal seas of China over the past 30 years. However, sea-level change results from not only eustatic factors but also tectonic activity. The Zhe-Min (or Zhejiang-Fujian) Uplift (ZMU) was such an important factor in geomorphology, and formed a barrier preventing entry of sea water into the northern marginal seas of China, but its Quaternary history is poorly known. In this study, a new borehole (ECS-DZ1) was drilled in the Zhoushan Islands, northern East China Sea to obtain information on the evolution of the ZMU during the Quaternary. Information from paleo-magnetic and luminescence dating was combined with data on sedimentary changes. The main results are: (1) constrained by luminescence ages, the upper sedimentary units were extrapolated to have been deposited since ～0.2 Ma; (2) paleomagnetic results suggest that the ECS-DZ1 borehole sequence spans from the pre-Olduvai Matuyama reverse chron to the Brunhes normal chron, approximately constraining the age of the basal sedimentary unit to ～2.0 Ma; (3) a significant hiatus or erosion between two major sedimentary units possibly occurred between the late Early Pleistocene and Middle Pleistocene. As the Zhoushan Islands are within the ZMU and considering previous transgression studies around this region, it is inferred that the ZMU subsided at ～2.0 Ma, allowing sea water to invade northward in the Yellow Sea basin. The ZMU might have been uplifted again no later than 1.0 Ma, causing a sedimentary hiatus or lacustrine development. After ～0.2 Ma, the ZMU subsided completely, allowing large transgressions to develop across the northern marginal seas of China in the context of global sea-level changes.
机译：由于低洼沿海地区人口密度的增加和不断增加，即使海平面的微小变化也会对社会和经济产生重大影响。沉积在沿海地区或大陆架的陆地和海洋沉积物的变化是海平面变化的重要和有效指标，因此，在过去的30年中，在中国的边缘海进行了广泛的研究。但是，海平面变化不仅是由喜乐因素引起的，而且还由构造活动引起的。浙闽隆起（ZMU-MIN）是地貌学中的重要因素，并形成了阻止海水进入中国北部边缘海的屏障，但其第四纪历史却鲜为人知。在这项研究中，在东海北部的舟山群岛钻了一个新的钻孔（ECS-DZ1），以获取有关第四纪ZMU演化的信息。来自古磁和发光测年的信息与沉积变化的数据相结合。主要结果是：（1）受发光年龄的限制，推测上层沉积单元从〜0.2Ma开始沉积。 （2）古磁学结果表明，ECS-DZ1井眼序列从Olduvai Matuyama前逆时针到Brunhes正时针跨度，大约将基底沉积单元的年龄限制在〜2.0 Ma。 （3）早更新世晚期和中更新世之间可能存在两个主要沉积单元之间的明显裂隙或侵蚀。由于舟山群岛在ZMU范围内，并考虑到该区域以前的海侵研究，因此推断ZMU在〜2.0 Ma处平息，从而使海水向黄海盆地北侧侵入。 ZMU可能不迟于1.0 Ma再次抬升，导致沉积裂隙或湖相发育。 〜0.2 Ma之后，ZMU完全平息，在全球海平面变化的背景下，中国北部边缘海域发生了较大的海侵。

著录项

  • 来源
    《Quaternary International》 |2014年第28期|316-326|共11页
  • 作者

    Liang Yi; Xingyong Ye; Junbing Chen; Yan Li; Hao Long; Xulong Wang; Jinhua Du; Songling Zhao; Chenglong Deng;

  • 作者单位

    State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China,MSG Group, Sanya Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya 572000, China,Institute of Geology and Geophysics, CAS, Bei-tu-cheng-xi-lu 19#, Beijing, China;

    Zhejiang Institute of Hydrogeology and Engineering Geology, Ningbo 315012, China;

    Zhejiang Institute of Hydrogeology and Engineering Geology, Ningbo 315012, China;

    School of Ocean Sciences, China University of Geosciences, Beijing 100083, China;

    State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China;

    State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China;

    State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China;

    Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;

    State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    East China Sea; Zhe-Min (Zhejiang-Fujian) Uplift; Quaternary; Magnetostratigraphy; Luminescence dating;

    机译：东海;浙闽（浙闽）隆起;第四纪磁地层学;发光测年;

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