Tectonic Geomorphology Analysis based on Digital Elevation Model in West Junggar

Abstract

The study of the developmental characteristics of the West Junggar tectonic landscape is one of the important elements in understanding the tectonic deformation processes in the Central Asian orogenic belt. In this study, the topographic slope, contour lines and profile lines of the West Junggar region were analyzed by applying the publicly available ASTER GDEM elevation data to study the tectonic landform development characteristics. The results of the study show that 1. The West Junggar region is constrained by three regional northeast-trending Class I faults. The regional Class I faults play an important role in the development of separated landforms, causing significant differences in the tectonic landforms on both sides of the boundary faults. 2. The overall tectonic landforms in West Junggar form a tertiary landform. The lowest landform unit is the Junggar Basin. The second level landform unit is the transition area between the darabut fault and the Junggar Basin. The tertiary landform unit is the high-altitude mountainous area between the Darabut fault, the Mayile fault and the Ba’erluke strike-slip fault. The formation of tertiary landforms is limited by the distribution of faults, and the difference between the two plates of the fault leads to different landform indicators on both sides, and the accumulation of stratigraphic material at the end of the fault forms tectonic highlands. This is an important indicator for further study of tectonic deformation in the Central Asian orogenic belt.