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古地理学报 ›› 2024, Vol. 26 ›› Issue (1): 192-207. doi: 10.7605/gdlxb.2023.06.070

• 古地貌动态模拟 • 上一篇    下一篇

新近纪以来华北东部古地貌演化数值模拟及陆架海沉降控制*

韩续1,2, 索艳慧1,2, 李三忠1,2, 丁雪松3, 宋双双1,2, 田子晗1,2, 付新建1,2   

  1. 1 深海圈层与地球系统教育部前沿科学中心,海底科学与探测技术教育部重点实验室,中国海洋大学海洋地球科学学院,山东青岛 266100;
    2 青岛海洋科学与技术国家实验室,海洋矿产资源评价与探测技术功能实验室,山东青岛 266237;
    3 加州大学洛杉矶分校地球行星与空间科学学院,美国加州洛杉矶 CA90095
  • 收稿日期:2022-10-21 出版日期:2024-02-01 发布日期:2024-01-23
  • 通讯作者: 索艳慧,女,1987年生,中国海洋大学教授、博士生导师,从事海洋地质学、洋底动力学研究。E-mail: suoyh@ouc.edu.cn。
  • 作者简介:韩续,男,1999年生,中国海洋大学硕士研究生。E-mail: hanxu7359@stu.ouc.edu.cn。
  • 基金资助:
    *青岛海洋科学与技术国家实验室山东省专项经费(编号: 2022QNLM05032)、国家自然科学基金项目(编号: 42121005, 91958214)、山东省自然科学基金项目(编号: ZR2021YQ25)和中央高校基本科研业务费专项(编号: 202172003)联合资助

Numerical simulation of eastern North China paleo-landscape evolution since the Neogene controlled by continental shelf subsidence

HAN Xu1,2, SUO Yanhui1,2, LI Sanzhong1,2, DING Xuesong3, SONG Shuangshuang1,2, TIAN Zihan1,2, FU Xinjian1,2   

  1. 1 Frontiers Science Center for Deep Ocean Multispheres and Earth System,Key Lab of Submarine Geosciences and Prospecting Techniques,MOE and College of Marine Geosciences,Ocean University of China,Shandong Qingdao 266100,China;
    2 Laboratory for Marine Mineral Resources,National Laboratory for Marine Science and Technology(Qingdao),Shandong Qingdao 266237,China;
    3 University of California Los Angeles,Department of Earth,Planetary and Space Sciences,Los Angeles,CA90095,USA
  • Received:2022-10-21 Online:2024-02-01 Published:2024-01-23
  • Contact: SUO Yanhui,born in 1987,is a professor and a Ph.D. supervisor of the College of Marine Geosciences,Ocean University of China. She is mainly engaged in researches on marine geology and marine geodynamics. E-mail: suoyh@ouc.edu.cn.
  • About author:HAN Xu,born in 1999,is a master degree candidate of the College of Marine Geosciences,Ocean University of China. E-mail: hanxu7359@stu.ouc.edu.cn.
  • Supported by:
    Marine S & T Fund of Shandong Province for National Laboratory for Marine Science and Technology(Qingdao)(No.2022QNLM05032),the National Natural Science Foundation of China(Nos.42121005, 91958214),the Natural Science Foundation of Shandong Province of China(No. ZR2021YQ25)and the Fundamental Research Funds for the Central Universities(No.202172003)

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摘要： 中生代以来,华北地区经历了华北古高原垮塌形成渤海湾盆地的地貌巨变过程。针对中生代的华北古高原和古近纪期间的渤海湾盆地裂陷过程已有大量研究,但新近纪以来,由于受太行山隆起、黄河沉积物输运、黄河贯通及海侵等地质事件影响,现今华北东部沿海地区及海域的地貌演化过程及地貌格局的定型时间还存在争议。使用Badlands数值模拟软件,定量化分析了地幔对流、构造事件、古气候、侵蚀和沉积等地球深浅部多种因素对于地形地貌的贡献,动态重建了华北东部晚新生代(25 Ma)以来的地貌演化过程; 并通过与区域构造格架和沉积相展布的对比,检验了模拟结果的合理性。结果表明,华北东部的地貌格局在中新世期间已定型并趋于稳定演化; 陆架海沉降是该时期华北东部地貌演化的一级控制因素。此外,该时期华北东部可能存在一条环山东半岛的古河流——华东河,这条古河流的形成时间不晚于中新世,可能在全新世期间消亡。本研究的古地貌模拟结果也有助于系统理解华北洋陆过渡带的多圈层相互作用。

关键词: 华北东部, 新近纪, 古地貌, 陆架海沉降, 华东河

Abstract: Since the Mesozoic,North China experienced an abrupt landscape transition from the collapse of the paleo-plateau to the formation of the Bohai Bay Basin. The distribution of the Mesozoic North China Paleo-plateau and the Paleogene rifting in the Bohai Bay Basin have been well known. However,factors driving the Late Cenozoic landscape evolution of the region remain a subject of debate,due to major geological events,such as the uplift of the Taihang Mountain,the sediment transport and the evolution of the Yellow River and marine transgression. In this study,we used Badlands software to quantitatively analyze the contributions of mantle convection,tectonic events,paleoclimate change,erosion and deposition to landscape,respectively. We then reconstructed the paleo-landscape evolution of eastern North China since the Late Cenozoic(25 Ma). The credibility of the modeled results was validated by comparing with existing geological data on tectonic frameworks and sedimentary facies patterns. We suggested that the landscape configuration in eastern North China was primarily established during the Miocene,controlled by the subsidence of continental shelf sea. Notably,our model identified an ancient river,termed'the East China River' near the Shandong Peninsula,which formed no later than the Early Neogene and disappeared by the Holocene. Our results are of great scientific significance to the systematic study on the multiple-sphere coupling in the eastern North China Ocean-Continent Connection Zone.

Key words: eastern North China, Neogene, paleo-landscape, continental shelf subsidence, East China River

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