| 琼西莺歌海盆地断裂系统的成因机制 |
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| 引用本文： | 殷秀兰 李思田 杨计海 张启明 董玉珊. 琼西莺歌海盆地断裂系统的成因机制[J]. 地质通报, 2002, 21(10): 653-657. |
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| 作者姓名： | 殷秀兰 李思田 杨计海 张启明 董玉珊 |
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| 作者单位： | 中国地质科学院地质力学研究所 北京100081(殷秀兰)，中国地质大学 湖北武汉430074(李思田)，中国海洋总公司南海西部石油公司 广东湛江524057(杨计海，张启明)，中国地质图书馆 北京100083(董玉珊) |
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| 基金项目： | 国家自然科学基金项目(编号:40102012及49732005)，地质调查项目资助。 |
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| 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。
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| 关 键 词： | 琼西 莺歌海盆地 断裂系统 变形 成因机制 |
| 文章编号： | 1671-2552(2002)10-0653-05 |
| 修稿时间： | 2002-03-08 |
Genetic mechanism of the fault system in the Yinggehai basin |
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| YIN Xiulan 1 LI Sitian 2 YANG Jihai 3 ZHANG Qiming 3 DONG Yushan 4. Genetic mechanism of the fault system in the Yinggehai basin[J]. Geological Bulletin of China, 2002, 21(10): 653-657. |
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| Authors: | YIN Xiulan LI Sitian YANG Jihai ZHANG Qiming DONG Yushan |
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| 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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| Keywords: | western Hainan Yinggehai basin fault system deformation genetic mechanism |
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