根据本区地质构造的新资料,提出了区域板块构造模型。研究了从俯冲到加利福尼亚型转换和由后者又到俯冲的古地球动力学环境更替的意义。这种更替发生在对本区最重要的中—新生代历史时期,对区域成矿带整体乃至一些金属矿床的形成具有重要影响。论证了一些地体性质,尤其是俯冲-增生杂岩对矿床形成的重要意义。 According to the new geological data in this area, a regional plate tectonic model is proposed. The significance of the replacement of paleo-earth dynamics from subduction to California-type transition and from subduction to subduction was also studied. This alternation occurred in the most important Meso-Cenozoic historical period in this area, and had an important influence on the formation of regional metallogenic belt and even some metal deposits. Some important geological features, especially the subduction-accretionary complex, have been demonstrated.