SEISMOLOGY AND GEOLOGY ›› 1995, Vol. 17 ›› Issue (4): 405-415.

• Brief Report • Previous Articles     Next Articles

ON THE STRUCTURAL FEATURES OF THE FRONTAL STEEP-DIP SHEAR ZONE OF THE GUANGNING DEEP-LEVEL NAPPE IN WESTERN GUANGDONG

Zhang Boyou1, Zhao Zhenhua1, Xia Bin1, Shi Manquan1, Yu Hongnian2, Guo Lingzhi2   

  1. 1. Guangzhou Institute of Geochemistry, Academia Sinica, Cuangzhou 510640;
    2. Deparment of Earth Sciences, Nanjing University, Nanjing 210093
  • Received:1993-08-31 Revised:1995-05-31 Online:1995-12-06 Published:2009-11-25

广宁深层次推覆构造前缘陡倾带变形构造研究

张伯友1, 赵振华1, 夏斌1, 石满全1, 俞鸿年2, 郭令智2   

  1. 1. 中国科学院广州地球化学研究所, 广州 510640;
    2. 南京大学地球科学系, 南京 210093
  • 基金资助:
    国家自然科学基金(49272133);广东省自然科学基金(930659);国家博士后基金资助

Abstract: Hetai gold-bearing ductile shear zone is a frontal steep-dip shear zone of Gunagning deep-level nappe structure in Western Guangdong,and is also a composite shear zone formed by thethrust shearing and subsequent dextral strike-slipping of Hetai shear zone. The characteristics ofdeformation and the microstructures of mylonites are also studied.In addition,the differentialstress and the strain rate of the deformation are estimated through study of the mylonites underpolarizing microscope and TEM.

Key words: Nappe, Strike-slip fault, Microstructure, Mylonite

摘要: 河台含金韧性剪切带是广宁深层次推覆构造前缘的一个陡倾带,它又是继推覆剪切之后再行右旋走滑剪切的复合带。首先解析了河台带中推覆与走滑两期构造变形的存在,并研究了带中的变形特征和运动规律及估算了几个主要糜棱岩带的水平走滑距离。通过显微镜和透射电镜,还研究了糜棱岩的显微、超显微构造,估算了变形的差异应力和应变速率。

关键词: 推覆体, 走滑断层, 显微构造, 糜棱岩