英雄岭构造带英西北带盐相关构造研究  

Study on salt-related structure in north belt of Yingxi area,Yingxiongling

作　　者：李祥 熊业刚 牛全兵 朱波 欧荣生 吴剑锋 LI Xiang;XIONG Yegang;NIU Quanbing;ZHU Bo;OU Rongsheng;WU Jianfeng(Research Institute of Exploration and Development,Qinghai Oilfield Company,Petro China,Dunhuang 736202,China;Exploration Enterprise Development,Qinghai Oilfield Company,Petro China,Dunhuang 736202,China)

机构地区：[1]中国石油青海油田勘探开发研究院,敦煌736202 [2]中国石油青海油田勘探事业部,敦煌736202

出　　处：《物探化探计算技术》2021年第5期584-590,共7页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：中国石油天然气股份有限公司重大科技专项(2016E-0107GF)。

摘　　要：柴达木盆地英雄岭构造带英西北带E_(3)^(2)地层中盐岩较为发育,对该区构造及其演化特征起着重要控制作用。通过对钻井、测井、地震等资料的综合分析研究,英西北带纵向上发育盐上、盐下、盐间“三层构造”样式。盐上发育大规模逆掩推覆构造,盐下发育逆冲叠瓦构造和冲起构造的复杂变形组合,盐岩层发育盐席、盐楔、盐推覆、盐间断褶、盐背斜等盐相关构造。研究表明,该区在早期弱挤压发育盐下主干断层,中期拗陷沉降发育多套盐岩层,晚期强挤压导致盐上变形幅度增大以及构造形态复杂化,并发育盐上大型逆掩推覆构造。Salt rock is well developed in E_(3)^(2) of the northwest Yingxiongling structural belt in Qaidam basin.It plays an important role in controlling the structure and structural evolution of the area.According to the studies of drilling,logging and seismic data,the"three-layer structure"pattern(upper salt,lower salt and inter salt)is developed longitudinally in the north belt of Yingxi area.Large scale overthrust structure is developed on the salt.The complex deformation combination of thrust imbrication structure and pop-up structure is developed under the salt.Salts in the shapes of sheet,wedge,nappe,discontinuous fold and anticline are formed in the salt stratum.In this area,the main faults under salt are lolcated in the early stage of weak compression.Many salt layers are obserevd in the middle stage of depression subsidence.In the late stage of strong compression,the deformation of salt is increased and the structural features become complicated.In the same stage,large overthrust structure on salt is developed.

关 键 词：英西北带 盐相关构造 构造演化 盐构造成藏 

分 类 号：P631.4[天文地球—地质矿产勘探]