四川盆地超深地震大剖面勘探及深部地质结构研究  

Ultra-deep layers seismic profile exploration and study on deep geological structure in Sichuan Basin

作　　者：胡峰 梁顺军 张晓斌 彭业君 杨智超 龙思萍 王中海 HU Feng;LIANG Shunjun;ZHANG Xiaobin;PENG Yejun;YANG Zhichao;LONG Siping;WANG Zhonghai(BGP Southwest Geophysical Company,CNPC,Chengdu 500643,China;Southwest Geophysical Exploration Research Institute of BGP,CNPC,Chengdu 500643,China)

机构地区：[1]中国石油集团东方地球物理勘探有限责任公司西南物探分公司,四川成都500643 [2]中国石油集团东方地球物理勘探有限责任公司西南物探研究院,四川成都500643

出　　处：《复杂油气藏》2021年第1期9-14,共6页Complex Hydrocarbon Reservoirs

摘　　要：为了研究四川盆地中部地震诱发因素,了解沉积盖层到莫霍界面的地震反射信息,近年来部署了2018GJ和2009HN两条超深地震大剖面勘探测线,获得了沉积盖层、岩石圈及莫霍界面的深部地震信息,全景式地再现了四川盆地中部岩石圈结构具明显的3大界面(基地、康拉德界面、莫霍面),4大层系(沉积盖层、上地壳和下地壳、上地幔),对四川盆地深部地质结构,特别是康纳德界面及莫霍界面地质特征有了新的初步认识,为研究四川盆地中部地壳结构和地震诱发因素提供了可靠的基础资料。In order to study the seismic inducing factors in the central Sichuan Basin and understand the seismic reflection information from sedimentary caprocks to the Moho interface,two ultra-deep seismic profiles of 2018 GJ and 2009 HN have been deployed in recent years,and the deep seismic information of sedimentary caprock,lithosphere and Moho interface has been obtained.A panoramic view of the lithospheric structure in the central Sichuan Basin has three distinct interfaces(base,Conrad interface and Moho discontinuity)and four major strata(i.e.sedimentary caprock,upper and lower crust,and upper mantle).A new preliminary understanding of the deep geological structure of the Sichuan Basin,especially the geological characteristics of the Conrad interface and Moho interface,has provide reliable basic data for the study of the crustal structure and earthquake inducing factors in the central Sichuan Basin.

关 键 词：超深地震大剖面 天然地震 沉积盖层 莫霍界面 康拉德界面 四川盆地中部 

分 类 号：P631[天文地球—地质矿产勘探]