【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 ,多处出现与Moho震相斜交的震相更多还原

【Abstract】 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.更多还原