【摘要】 本文利用天然地震转换波法所测得的漂阳震区地壳深部主要界面的构造图。简要地讨论了溧阳震区深部构造与震中分布的关系,认为溧阳两次中强地震都发生在较厚的花岗岩质层中,其深部构造特征表现为上地幔隆起、或界面埋深变化剧烈的梯度带,同时又处于两组以上深断裂交汇的特殊部位。更多还原

【Abstract】 This paper describes the structural profiles across such main boundaries between earth’s crust and mantle as: granitic layer (G), inner granitic layer (G1), Conrad boundary (C), M discontinuity (M), and M1 and M3 in upper mantle, for which a coverted wave has been used in the study area (E118°56′- 119°40′, N31°10′ - 31°50′).The results obtained indicate that NE-trending structures are dominant beneath this area, and then NW-trending structures. The deep faults have been well developed and the two shocks have occurred at the granite layer.It has been concluded that the earthquakes tend to have occurred along the edge of . the uprising zone or along the gradient zone where the depths to the boundaries vary , abruptly or at the intersections of the deep fault in different directions.更多还原