松辽盆地深部反射地震探查  

DEEP SEISMIC REFLECTION PROBING IN SONGLIAO BASIN,CHINA

作　　者：杨宝俊[1] 唐建人[2] 李勤学[2] 刘财[1] 刘振彪[2] 邓世玉[2] 李青仁[2] 王洪志[2] 李占林[2] 王功先[1] 董世学[1] 冯晅[1] 郑海山[1] 王世煜[1] 

机构地区：[1]吉林大学地球物理系,长春130026 [2]大庆石油管理局,大庆163357

出　　处：《地球物理学进展》2001年第4期11-17,共7页Progress in Geophysics

基　　金：国土资源部"十五"重点科技攻关项目 (2 0 0 0 10 10 2 0 4)资助

摘　　要：概述了近年来用近垂直反射地震方法研究不同大地构造单元的地壳结构和深部构造问题所取得的基本成果 .说明了在松辽盆地内所进行的两次深反射地震探查 ,包括位置、科学目标、资料采集、处理技术和基本结果 .利用延长排列所得到的约 4 2km长共炮点资料 ,求出松辽盆地内地壳平均速度约为 6 .197km/s .通过初步解释 ,认为在上部地壳存在多组低角度断裂、中下部地壳构造具有更为复杂的震相、Moho震相比较清晰 。The paper summarizes the basic achievement in studying the crustal structure and deep tectonics of different geotectonic unit by near normal seismic reflection in recent years. Also, the paper narrates two times of deep seismic reflection probing in Songliao basin, including the location, scientific goal, data gathering, data processing and basic results. Through 42km common-source point data achieved by extended spread, we calculate that average velocity is about 6.197km/s in Songliao basin. Through elementary explanation, we think that there are multiunit low angle fractures in the upper crust and very complex phase in the middle lower crust. Also, Moho phases are comparatively clear and there are many phases that aslant cross with the Moho phases.

关 键 词：松辽盆地 深部反射地震探查 低角度断裂 Moho震相 地壳结构 深部构造 

分 类 号：P631.4[天文地球—地质矿产勘探]