It shows that the resolution of the crust interface ' s shape on this four profiles is very good , nevertheless that of the velocity structure is relatively poor . the crust and upper mantle ' s fine configuration on the hq - 13 profile is obtained by our tomography , which reveals some important structure and dynamic features of this region : the velocity structure of the crust consists of three layers , the upper crust , the middle crust and the lower crust . however it also can be divided into six lateral blocks , each of them " s velocity is always higher or lower than that of its neighboring blocks 本文第五章利用有限差分反演和射线反演的方法获得了符离集?奉贤地震测深剖面( hq - 13线)精细的地壳上地幔结构剖面，揭示出下扬子地区一些重要的结构和动力学特征：地壳速度结构在纵向上大致可分上地壳、中地壳和下地壳三部分，横向上可划分为6个块体，各块体的p波速度沿测线方向呈现高速?低速?高速的组合。
Ree partition simulation suggests that the tianzhushan intermediate rocks can be generated by partial melting , in coupling with fractional crystallization , of dioritic gneiss which is similar in chemical compositions to the mafic rocks in the lower crust in north dabie ; partial melting of intermediate grey gneiss which is similar in chemical compositions to the middle crust in north dabie can generate the tianzhushan felsic rocks Ree配分的定量模拟计算结果表明，与基性下地壳相似的北大别基性闪长质片麻岩部分熔融并经过结晶分异能够形成与天柱山中性岩类似的稀土元素组成，而与中性地壳相似的北大别中性灰色片麻岩部分熔融能够形成与天柱山花岗岩类似的稀土元素组成。
Alkali basite , which came from upper mantle or lower crust , invaded through those structure , which not only bring cu et al mineralizing elements , but also the most important is that thermal energy . it cycled the formation water ( yinmin fonnation and luoxue formation ) , and form alkali - rich , middle - high temperature and salinity fluid mixed with alkali - rich magmatic water . there were high rate of percolation and well voidage in the contact zone between yinmin purple stratum and yinmin rubblerocks , which is in favor of the transposition and mineralization of minerogenetic fluids 因此，总结东川稀矿山式铜矿成矿模式为沉积( fe 、 cu ) ?热液叠加( cu )改造：晋宁-澄江期，小江深大断裂发生走滑运动，在东川矿区造成右行旋扭及其派生构造，形成“ z ”字形落因破碎带，同时来自深源(下地壳或上地幔)碱基性岩浆侵入，不仅带来了大量cu等成矿物质，更重要的是提供了热源，促使地层水(落雪组白云岩和因民组紫色层)循环，与富碱( na和k )岩浆水混合，形成富碱中高温高盐度流体。
