The Study Of Ore-controlling Structure Of The Xiachen-Wangchangmu Fluorite Ore Field

The Xiachen-Wangchangmu fluorite ore field locates in the Sinian Period-Paleozoic uplift zone in the southeast of Zhejiang Province. It is a superficial layer epithermal filling deposit and its ore-controlling structure are rift structure. The build and structure environment, which is related of any geologic or ore body of the living crust, is mutual restraint, interdependent and common development. The study of them should be based on dynamic space development. This thesis analysed and summarized the law of mineralizing and the the space development relationship between ore-controlling structure and ore bodies by collecting and sorting out the previous information, gathering a great deal of geologic information by elaborative field work and using guiding ideology mentioned above. There are the main conclusions:(1) The Xiachen-Wangchangmu fluorite ore field belongs to the Tiantai basin. It is a successive-transitional basin, which is one kind of tectonic volcanic basin.(2) The ore-controlling structure of the Xiachen-Wangchangmu fluorite ore field experienced multiple tectonic movements. Its mechanical proerty experienced the process of shear-compression-compression and scissor. The current ore-controlling structure is formed under the specific boundary conditions.(3) The post-mineralization tectonic action of the Xiachen-Wangchangmu fluorite ore field is evident and the succession of the ore belt(ore body) suffer from damage in a certain extent(4) The spatial arrangement of every ore belt(every ore body) and wall rock alteration of the Xiachen-Wangchangmu fluorite ore field is strictly controlled by structure. So it has evident zoning laws whether in longitudinal(strike),transverse or vertical.(5) This thesis evaluate the characters of the Xiachen-Wangchangmu fluorite ore field resources using comprehensive analysis.