吉林大学学报(地球科学版) ›› 2019, Vol. 49 ›› Issue (1): 206-217.doi: 10.13278/j.cnki.jjuese.20180125

• 海洋地质与资源 • 上一篇    

南海及邻区新构造运动表现特征及其主控因素

卢丽娟1,2, 蔡周荣1,2, 黄强太1,2, 姚永坚3, 刘海龄4   

  1. 1. 中山大学海洋科学学院, 广州 510006;
    2. 广东省海洋资源与近岸工程重点实验室, 广州 510006;
    3. 广州海洋地质调查局, 广州 510760;
    4. 中国科学院南海海洋研究所, 广州 510301
  • 收稿日期:2018-05-23 发布日期:2019-01-18
  • 通讯作者: 蔡周荣(1979-),男,副教授,博士,主要从事构造地质与油气资源方面的研究,E-mail:caizhr@mail.sysu.edu.cn E-mail:caizhr@mail.sysu.edu.cn
  • 作者简介:卢丽娟(1990-),女,硕士研究生,主要从事海洋地质方面的研究,E-mail:lulj7@mail2.sysu.edu.cn
  • 基金资助:
    国家海洋地质专项(DD20160147,DD20189643);广东省自然科学基金项目(2018A030313168,2018B030311030);广东高校基本科研业务费项目(17lgpy57)

Characteristics and Controlling Factors of Neotectonic Movement in South China Sea (SCS) and the Adjacent Areas

Lu Lijuan1,2, Cai Zhourong1,2, Huang Qiangtai1,2, Yao Yongjian3, Liu Hailing4   

  1. 1. School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China;
    2. Guangdong Key Laboratory of Offshore Oil Exploration and Development, Guangzhou 510006, China;
    3. Guangzhou Marine Geological Survey, Guangzhou 510760, China;
    4. South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
  • Received:2018-05-23 Published:2019-01-18
  • Supported by:
    Supported by National Marine Geology Special Project of China (DD20160147,DD20189643),Natural Science Foundation of Guangdong Province (2018A030313168,2018B030311030) and Fundamental Research Funds for the Guangdong Universities(17lgpy57)

摘要: 南海具有复杂的地质构造背景,扩张结束以后,新构造运动活跃,但各区域新构造运动发生的时间及运动特征有较大差异。本文综合分析了南海各区域构造演化事件、现今构造格局及新构造运动的基本特征,认为南海新构造运动的起始时间为中中新世(约15 Ma)较合理。在此基础上,收集和整理了南海及邻区最新的地质和地球物理资料,对南海海域新构造期地层差异升降、活动断裂、天然地震以及岩浆活动等新构造表现形式进行了综合分析,系统总结了南海新构造运动特征,并根据活动断裂、天然地震以及岩浆活动等特征和分布规律分析,认为南海海域新构造的表现形式之间存在较大的耦合性。本文根据新构造运动表现形式在空间分布的不平衡性,将南海及邻区划分为1个强构造活动区、3个中等强度构造活动区以及1个弱构造活动区,并结合研究区应力场特征分析,认为南海新构造运动主要受控于东部菲律宾海板块和太平洋板块对东亚大陆边缘的持续俯冲碰撞作用。

关键词: 南海, 新构造运动, 主控因素, 太平洋板块

Abstract: South China Sea (SCS) is in a complex geological tectonic environment, and the neotectonic movement is active during the post-expansion period. The time of neotectonic movement and the movement characteristics are different in the different areas. In this study, the starting time of the neotectonic movement in SCS is considered to be in the middle of Miocene (about 15 Ma) through integrating the tectonic evolution events, current tectonic patterns and the features of the neotectonic movement. With further collection and organization of the geological and geophysical data, the neotectonic movements, including stratigraphic differences, active tectonics, seismicity and magmatic activity, were systematically studied and explored. According to the manifestation and imbalance in spatial distribution of the new tectonic movement, SCS and the adjacent areas are divided into one strong tectonic active zone, three moderate-strong tectonic active zones and one weak tectonic active zone. Combined with the analysis of the stress field characteristics, the neotectonic movement was mainly controlled by the continuous subduction-collision of the Philippine plate and Pacific plate on the continental margin of East Asia.

Key words: South China Sea, neotectonic movement, controlling factors, Pacific plate

中图分类号: 

  • P67
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