现代地质Issue(1)：45-53,9.
新疆博格达山北缘大龙口地区构造特征与油气勘探前景
Structural Features and Petroleum Exploration Prospective in Dalongkou Area of the Northern Bogda Mountain,Xinjiang
摘要
Abstract
Dalongkou area,located between Bogda Mountain and the eastern Junggar Basin,Xinjiang,is an in-tegral part of the northern fold and thrust belt of Bogda Mountain.Many studies have been carried out about the surface structural features in recent years,but the underground structural features are not clear till now due to the complex structural deformation and poor seismic imaging quality making identification of underground struc-tures difficult.By surface geology,seismic and magnetotelluric data integrated research,given Fukang thrust fault works as a detachment,two structural systems can be divided vertically which are the extensional tectonic system of the Early Permian rift in the lower part and the fold and thrust system in the upper part.The former belongs to the in situ system with weak structural deformation,and the juxtaposed tectonic framework of the Lower Permian faulted high with fault depression is clear which is of great importance in rethinking regional tec-tonic setting and evolution of Bogda Mountain in the Early Permian;the latter,with intense structural deforma-tion,is characterized by the thrusting from south to north,and accompanied by some strike-slip deformation. Undergoing multiple-stage tectonic movements,the Permian to Jurassic exploratory objectives are exposed, together with the intense deformation of folds and faults,and the preservation becomes poor,herein makes pe-troleum exploration prospects poor.On the other hand,there exist favorable petroleum elements,and given the existence of an Early Permian “residual fault depression”,a greater exploration potential for oil and gas can be assumed in the footwall of the Fukang thrust fault.关键词
构造特征/伸展构造/逆冲推覆构造/油气前景/大龙口地区/博格达山北缘/新疆Key words
structural feature/extensional structure/thrust and nappe structure/petroleum exploration pro-spective/Dalongkou area/the northern Bogda Mountain/Xinjiang分类
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孙自明..新疆博格达山北缘大龙口地区构造特征与油气勘探前景[J].现代地质,2015,(1):45-53,9.基金项目
中国石油化工股份有限公司科技开发项目“西部山前构造带构造建模与有利区带评价”（P07015）。 （）
