Fission Track Analysis And Thermal History Simulation Of Akedaban-Kaladaban Area,Altyn Tagh,Xinjiang

The Akedaban-Kaladaban fault zone is located in the core area of the Altyn metallogenic belt,with high scientific research value,but low degree of research.In this paper,we use the field route profile survey,typical deposit study,zircon fission track analysis,apatite fission track analysis and previous research to analysis the fission track thermal chronology and thermal history simulation of the Akedaban-Kaladaban in Altyn mountain area,and preliminarily study the preservation of deposit after the deposit in the study area is made.The following understanding is made:The zircon and apatite fission tracks in the Akedaban-Kaladaban,Altyn,recorded 4tectonic uplift events,222~186Ma(late Triassic Epoch to early Jurassic),145~133Ma(Late Jurassic to early Cretaceous),117~103Ma(Late Cretaceous),and 55~8Ma(Cenozoic).The tectonic events of the new generation are roughly divided into two stages,the first stage is55~12Ma,the uplift amplitude is about 1800 m,the uplift rate is about 42m/Ma,the second stage is 12Ma~8Ma,the uplift amplitude is about 1000 m,and the uplift rate is about83.33m/Ma.In the Akedaban-Kaladaban fault zone,the middle generation is now a NE oriented tectonic movement,while the Cenozoic is now a SN shear movement.The ore deposits are mainly concentrated in the Akedaban-Kaladaban fault zone,so the spatial location of the deposit is controlled by Akedaban-Kaladaban fault.The difference of erosion depth between the West and the East is 500 meters,and the volcanic deposits in the eastern Kaladaban region are 100~200 meters away from the surface,if the same beds in the western Akedaban area have similar deposits,they have been completely denuded.