乌伦古坳陷断裂特征及其构造演化过程  

The Characteristics and Evolution of Faults in Wulungu Depression

作　　者：卫端 高志前[1] 孟苗苗[1] 

机构地区：[1]中国地质大学(北京)能源学院,北京100083

出　　处：《重庆科技学院学报（自然科学版）》2016年第4期46-50,共5页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家油气重大专项"海相碳酸盐岩层系优质储层分布与保存条件评价"(2011ZX05009-002);国家自然科学基金项目"塔里木盆地早中奥陶世台内滩储集体形成机制及分布规律"(41102087)

摘　　要：利用现有二维地震资料进行断裂解释,识别乌伦古坳陷主断裂及其衍生断裂的的展布特征,分析断裂形成的力学背景。乌伦古东断裂和吐孜托依拉断裂是主要的控坳断裂,属于逆冲推覆类型的断裂;伦2井南断裂是以逆冲推覆为主、走滑为辅的断裂。根据乌伦古坳陷中生代沉降中心的演化特点,认为在印支和燕山期乌伦古坳陷东北缘所受挤压力强于西北缘。In this paper, we distinguish the distribution characteristics of the main faults and the derivative faults and analyze the mechanics background of the different faults of Wulungu depression by the 2D seismic data. We hold the view that both Wulungu east fault and Tuzituoyila fault are over -thrust faults, and they control the development of the depression ; while south Lun2 well fault belongs to over - thrust fault and strike - slip fault as supplement. Besides, according to the analysis of the evolution characteristics of the subsidence center of Wulungu depression in the Mesozoic, we consider that the extrusion force in the northeast edge is stronger than that in the northwest during lndo -china and Yanshanian period.

关 键 词：乌伦古坳陷 乌伦古东断裂 孜托依拉断裂 伦2井南断裂 逆冲推覆 走滑 

分 类 号：P618[天文地球—矿床学]