Research of Tectonic Geomorphology in Pinggu Basin and its Adjacent Area in Beijing

Abstract

Abstract-Based on field geological investigation, combined with the regional geology datas and study results from the former researchers, this paper has researched and analyzed the tectonic geomorphology types of Pinggu area and its adjacent area. The results indicated that the major tectonic geomorphological types include the fault block mountains and Pinggu Basin. Orogeny in this area was based on Yanshanian, and formed at tectonic movement in Cenozoic. For Pinggu Basin, it was controlled by Ershilichangshan Fault during the whole Quaternary, at least the west boundary, although the sediment center in Pinggu hollow was far from Ershilichangshan Fault. Another important fault in this area, the movement of Xiadian Fault has slightly influence on the evolution of Pinggu Basin during Quaternary.