全球浅成低温热液-斑岩成矿系统大多数分布于年轻的岛弧或陆弧环境，前中生代造山带由于风化剥蚀等后期地质作用的影响，大多不具备完整保存该成矿系统的条件。然而，在西天山北支已发现阿希、伊尔曼得等多个大型浅成低温热液型金矿床和数个斑岩型铜金矿床，使西天山及邻区成为全球最大的前中生代浅成低温热液成矿省。西天山前中生代浅成低温热液-斑岩成矿系统特殊的保存条件，是尚未解决的重要科学问题。本项目拟以含矿的吐拉苏盆地和周缘主要山体为研究对象，运用野外构造解析和低温热年代学分析手段（如：裂变径迹，(U-Th)/He定年）相结合的研究方法，来探讨盆地的沉积、构造特征及热演化历史，对比山体基岩的隆升-剥露过程，阐明盆-山演化的动力学机制和古老造山带内浅成低温热液-斑岩型矿床的保存条件。

Most of the epithermal-porphyry mineralization systems are restricted to juvenile island arcs or continental arcs, in contrast to the pre-Mesozoic orogenic belts with absence of ore-preserving condition due to strong uplifting and erosion processes. However, there are many epithermal deposits and some counterpart porphyry ore deposits in the north branch of the western Chinese Tianshan, such as Axi, Yiermand deposits, making this area one of the largest pre-Mesozoic epithermal-porphyry mineralization provinces. The ore-preserving condition of the pre-Mesozoic epithermal-porphyry mineralization province in the western Chinese Tianshan remains unclear. This proposal will focus on the ore-bearing Tulasu basin and corresponding mountain base rocks by using structure geology analysis and low-temperature thermochronometry methods (including Fission track and (U-Th)/He dating) to study the basin sedimentation, structural fabrics and thermal history, which will be correlated to the uplift-erosional process of the mountain base rocks. Eventually, we will attempt to clarify the geodynamic mechanism of the basin-range evolution and the ore-preserving conditions of an epithermal-porphyry mineralization system in an ancient orogenic belt.