The Character of Southern Branch Fault in Eastern Marginal Fault Zone of oft-com:office:smarttags" />Taihang Mountain and K-Ar Dating of Fault Gouge

详细信息   

• 责任者：Yan Shuyu (Key Laboratory of Orogenic Belts and Crustal Evolution ; Ministry of Education ; China ; School of Earth and Space Sciences ; Peking University ; Beijing 100871 ; China) ; Zhang Jinjiang
• 刊名：Chinese Journal of Geology
• 出版年：2012
• 卷期：47(1)
• 关键词：正断层 ; normal faults ; 太行山 ; Taihang Mountains
• 页码：p.1-12
• 图表：9 illus., 1 table, 31 refs.
• 分类号：0300
• issnNo：ISSN0563-5020
• isbnNo：CN11-1937/P

摘要

Eastern marginal fault zone of Taihang Mountain is a controlling fault in western marginal of oft-com:office:smarttags" />North China Basin, as it has a great meaning to oil-gas reservoir, distribution of earthquake and mineralization since Mesozoic. On basis of detailed research of geometry, kinematics, XRD of fault gouge and K-Ar isotope chronology, the authors confirmed that the fault zone was a normal and hinge fault, which is composed of a series of normal faults trending NNE. In the longitudinal, it presents left-lateral. The K-Ar dating of syntectonic illite showed that the fault deformed intensely during the time of （113.42±2.31） Ma. Reactivated during Cenozoic, the fault has formed a series of rift basins.oft-com:office:office" />