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西太平洋帕里西维拉海盆不对称性发育特征及其成因
引用本文:殷征欣,李正元,沈泽中,汤民强,魏巍,刘强,谢明芮,蔡周荣.西太平洋帕里西维拉海盆不对称性发育特征及其成因[J].吉林大学学报(地球科学版),2019,49(1):218-229.
作者姓名:殷征欣  李正元  沈泽中  汤民强  魏巍  刘强  谢明芮  蔡周荣
作者单位:1. 国家海洋局南海调查技术中心, 广州 510275;2. 国家海洋局南海维权技术与应用重点实验室, 广州 510275;3. 中山大学海洋科学学院, 广州 510006
基金项目:国家自然科学基金项目(41706055,41602092);国家海洋地质专项(DD20160147,DD20189643);国家重点研发计划(2017YFF0107405);广东省自然科学基金项目(2018A030313168,2018B030311030);国家海洋局南海维权技术与应用重点实验室开放基金(SCS1605);广东高校基本科研业务费项目(17lgpy57)
摘    要:西太平洋帕里西维拉海盆是伊豆-小笠原-马里亚纳"沟-弧-盆"体系下众多弧后扩张盆地中最大的一个,地质、地球物理资料显示该海盆具有明显的不对称发育特征,但长期以来对其成因缺乏系统研究。本文深入分析了帕里西维拉海盆东西两侧的几何形态、地形地貌、沉积特征与地球物理特征,以及盆地南端东翼的缺失和西翼明显的弯曲构造特征,并结合海盆区域板块运动机制研究认为:盆地不对称性发育特征的成因主要在于盆地的构造发育背景、盆地两侧构造活动与沉积环境的差异,盆地东西两侧的不对称发育主要受盆地发育过程中两侧的构造过程与沉积环境控制;盆地南端东翼的缺失和西翼的弯曲构造更多地受到东侧加洛林板块特别是加洛林脊俯冲作用的影响。

关 键 词:西太平洋  帕里西维拉海盆  弧后盆地  不对称性发育  成因  
收稿时间:2018-05-31

Asymmetric Geological Developments and Their Geneses of the Parece Vela Basin in Western Pacific Ocean
Yin Zhengxin,Li Zhengyuan,Shen Zezhong,Tang Minqiang,Wei Wei,Liu Qiang,Xie Mingrui,Cai Zhourong.Asymmetric Geological Developments and Their Geneses of the Parece Vela Basin in Western Pacific Ocean[J].Journal of Jilin Unviersity:Earth Science Edition,2019,49(1):218-229.
Authors:Yin Zhengxin  Li Zhengyuan  Shen Zezhong  Tang Minqiang  Wei Wei  Liu Qiang  Xie Mingrui  Cai Zhourong
Institution:1. South China Sea Marine Survey and Technology Center, State Oceanic Administration, Guangzhou 510275, China;2. Key Laboratory of Technology and Application for Safeguarding of Marine Rights and Interests, State Oceanic Administration, Guangzhou 510275, China;3. School of Marine Science, Sun Yat-Sen University, Guangzhou 510006, China
Abstract:The Parece Vela basin in Western Pacific Ocean is the largest of the numerous back-arc basins in the Izu-Ogasawara-Mariana trench-arc-basin system. It is characterized by obviously asymmetric development shown by regional geological and geophysical data. However, for a long time, the causes of its asymmetry have not been systematically studies. In this paper, the asymmetric geological characteristics in the Parece Vela basin are summarized in depth, including the asymmetries of geometry, topography, sedimentary characteristics and geophysical features between the eastern and western sides of the basin, the lack of the eastern wing and the curved structure in the west wing of the southern tip of the basin. Combined with the regional plate movement mechanism in this area, we believe that the asymmetric development of the basin were mainly caused by the tectonic development background and the differences of the tectonic activities and sedimentary environments on both sides of the basin. In the southern tip of the basin, the lack of the eastern wing and the curved structure in the west wing were mainly affected by the occurrence of subduction of the Calorine plate in the east, especially the Calorine ridge.
Keywords:Western Pacific Ocean  Parece Vela basin  back-arc basin  asymmetric development  genesis  
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