Kinematics Model Of Wudang Structure In Guiyang

This article reorganizes and analyzes the local existence information, the geological investigation and the apatites and the zircons fission-track data and so on,and researches the local structure kinematics process , and establishes reasonably the structure kinematics model in Wudang area of Guiyang.According to the author analyzes the distributed rule of the local structure and various structures characteristic in Wudang area, thinks that the forming process of the local structure is in turn the Wudang fault, the Wudang fold, the Dawa fault,the Da Mawo fault, the Xiao Mawo fault, the Tian Batou fault and finally the Gaoyuan fault which spread the from north and south.According to the author analyzes the ages of the apatites(D₂) and the zircons(D₁, D₃ and D₄) and thinks the fault is the multi- times moving fault. The active age is about 325Ma (D₄), 264±22Ma (D₃), 134±14Ma (D₁ and D₄) and 81±7 Ma (D₂), its correspondence active time is Haixi movement, Indo-China movement early, Yanshan movement early, Yanshan movement later stage;at the same time , the Wudang fold also is the multi-times activity which is 236±21 Ma (D₄) and 134±14Ma (D₁ and D₄), its correspondence times is the Indo-China movement later and the Yanshan movement early.According to the author analyzes the geological map in Wudang area, the Gaoyuan fault cuts the Dawa fault, the Da Mawo fault, the Xiao Mawo fault and the Tian Batou fault, finally is connect with Wudang fault. Therefore author thinks the measured age of the apatite of D₂ sample (81±7 Ma) may accurately be on behalf of the strike-slip active age of the Gaoyuan fault, which may be also on behalf of partly activity age of Wudang fault (the crossroad part of the Wudang fault and Gaoyuan fault) , Gaoyuan fault may firstly form in Ordevieian and set up orientate normal fault.According to the above analyzes, the formation age of Dawa fault,the Da Mawo fault, the Xiao Mawo fault and the Tian Batou fault is between Wudang fold stereotypia and the Gaoyuan strike-slip age ,namelyl34±14 Ma (D₁ and D₄)—-—81±7 Ma (D₂), which belongs to the Yanshan movement.The author synthesizes the over geological data and the new researching results, researches the local structure evolutionary process,and establishes reasonably the structure kinematics model.