殷秀兰, 李思田, 杨计海, 张启明, 董玉珊. 2002: 琼西莺歌海盆地断裂系统的成因机制. 地质通报, 21(10): 653-657.
    引用本文: 殷秀兰, 李思田, 杨计海, 张启明, 董玉珊. 2002: 琼西莺歌海盆地断裂系统的成因机制. 地质通报, 21(10): 653-657.
    YIN Xiulan, LI Sitian, YANG Jihai, ZHANG Qiming, DONG Yushan. 2002: Genetic mechanism of the fault system in the Yinggehai basin. Geological Bulletin of China, 21(10): 653-657.
    Citation: YIN Xiulan, LI Sitian, YANG Jihai, ZHANG Qiming, DONG Yushan. 2002: Genetic mechanism of the fault system in the Yinggehai basin. Geological Bulletin of China, 21(10): 653-657.

    琼西莺歌海盆地断裂系统的成因机制

    Genetic mechanism of the fault system in the Yinggehai basin

    • 摘要: 通过对莺歌海盆地构造变形背景和变形基本特征的分析,详细地研究了盆地断裂系统的特征及其分布规律,并结合区域构造演化,对断裂的成因机制进行了探讨。认为北西向断裂控制了盆地的总体构造格局,尤其是强烈的右旋扭动形成南北向雁行式的张裂隙,诱导了泥-流体底辟构造的发生;泥-流体底辟活动进一步形成局部的应力场,开启新的断裂和破碎带,同时,形成与超压流体的活动相关的流体压裂。

       

      Abstract: Through an analysis of the setting and basic characteristics of the tectonic deformation of the Tertiary Yinggehai basin in the northwestern South China Sea,the characteristics and distribution pattern of the fault system in the basin were studied in details,and on that basis,combined with a study of the tec-tonic evolution in the area,the genetic mechanism of the fault was studied.The NW-trending fault con-trolled the general tectonic framework of the basin,and especially the strong dextral shear formed the N-S-trending echelon tensile fractures and induced the occurrence of the mud-fluid diapirism.Then the mud-fluid diapirism further gave rise to the local stress field and initiated the new fault and fractured zone,and at the same time ,many hydraulic fractures related to the overpressure fluid activity were formed.

       

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