焉耆博湖坳陷早-中侏罗世盆地性质与演化模式探讨  

Characteristics and Its Evolution Pattern of Bohu Depression in Early-middle Jurassic System of Yanqi Basin

作　　者：李小刚[1] 徐国强[1] 蔡坤[1] 邵伟民[1] 何健[1] 刘航[1] 严永新[2] 张辉[2] 

机构地区：[1]成都理工大学能源学院,四川成都610059 [2]中石化河南油田分公司石油勘探开发研究院,河南南阳473132

出　　处：《石油天然气学报》2011年第10期6-10,164,共5页Journal of Oil and Gas Technology

基　　金：国家油气重大专项(XQ-2007-03)

摘　　要：焉耆盆地中生代盆地性质一直存在争议,争议的焦点集中在早-中侏罗世盆地的性质。结合前人研究成果,主要利用博湖坳陷的地震资料,通过开展系统的地层构造解释,并选择4条骨架测线开展关键地质时期沉积盆地原形恢复,探讨其在侏罗系八道湾组(J1b)、三工河组(J1s)及西山窑组(J2x)沉积期末的盆地形态及性质。结果表明盆地在早-中侏罗世早期主要表现为弱扭压条件下的坳陷盆地。结合断裂系统平面展布特征和研究区所处构造位置,提出了研究区构造演化模式。It was still a controversial issue on the natures of Mesozoic basin in Yanqi Basin,it focused on its features in early-middle Jurassic system.In this paper,on the basis of predecessors' studies,the seismic data from Bohu Depression were used for structural interpretation,4 regional seismic profiles were selected for stratigraphic correlation,identification and interpretation of faults,and then original structural shape of sedimentary basin was restored to find out some evidences to illustrate the basin's nature and its original structural shape in early-middle Jurassic system(from J1b to J2s).The results show that Bohu Depression is a depression basin in relatively weak shearing compressive stress in early-middle Jurassic.In combination with the plain distribution of fault system and the position of the studied area,the structural evolution pattern in the area is proposed based on the distribution feature of fault system in the study area and its structural position.

关 键 词：焉耆盆地 博湖坳陷 侏罗纪 盆地性质 演化模式 

分 类 号：P618.13[天文地球—矿床学]