大兴安岭造山带及两侧盆地的地壳速度结构  

The crust velocity structure of Da Hinggan Ling orgenic belt and the basins on both sides

作　　者：李英康[1] 高锐[2] 姚聿涛 米胜信 李文辉[2] 熊小松[2] 高建伟[1] 

机构地区：[1]国土资源实物地质资料中心,三河065201 [2]中国地质科学院地质研究所,北京100037

出　　处：《地球物理学进展》2014年第1期73-83,共11页Progress in Geophysics

基　　金：国家地质调查项目(1212011120975)<松辽盆地-大兴安岭-海拉尔盆地岩石圈精细结构调查与资源远景>资助

摘　　要：内蒙新巴尔虎左旗一黑龙江齐齐哈尔深地震测深剖面长630km，跨越海拉尔盆地、大兴安岭造山带和松辽盆地．本文根据沿测线爆破地震的9炮记录截面图中，5个震相的到时资料，结合地震记录中的振幅信息，确定了沿剖面的二维纵波地壳速度结构，海拉尔盆地的地壳厚度为39．O～41．0km，大兴安岭造山带西侧莫霍面深度为38．5～43．5knL东侧的莫霍面深度为34．5～36．4k风松辽盆地的莫霍面深度为32．4～36．2km整个地壳形态东浅西深，松辽盆地最浅的莫霍面深度为32．4km，大兴安岭西侧最深的莫霍面深度为43．5km最后讨论了本区的深部特征和盆山结构关系．Xinbaerhu-Qiqihaer Deep Seismic Sounding profile is about 630 km long, which goes across Hailaer basin, IN Hinggan Ling orgenic belt and Songliao basin. According to travel-time data of 5 seismic phases and the amplitude information which were recognized by the recorded sections in 9 shots , the authors obtained the two-dimensional P waves velocity structure along the profile, the thickness of crust is about 39. 0-41.0 km in Hailaer basin, the thickness of crust from 38. 5-43.5 km in the west to 34. 5-36. 4 km in the east of Da Hinggan Ling orgenic belt, the thickness of crust is about 32. 4 - 36. 2 km in Songliao basin, analyzed the difference structure of crust and upper mantle of Da Hinggan Ling orgenic belt and the basins on both side, to discuss the relation of basin-mountain structure..

关 键 词：大兴安岭 深地震测深 地壳上地幔结构 

分 类 号：P315[天文地球—地震学] P541[天文地球—固体地球物理学]