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

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

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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. 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. 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

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

Zhang Boyou, Zhao Zhenhua, Xia Bin, Shi Manquan, Yu Hongnian, Guo Lingzhi. ON THE STRUCTURAL FEATURES OF THE FRONTAL STEEP-DIP SHEAR ZONE OF THE GUANGNING DEEP-LEVEL NAPPE IN WESTERN GUANGDONG[J]. SEISMOLOGY AND GEOLOGY, 1995, 17(4): 405-415.

张伯友, 赵振华, 夏斌, 石满全, 俞鸿年, 郭令智. 广宁深层次推覆构造前缘陡倾带变形构造研究[J]. 地震地质, 1995, 17(4): 405-415.

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

广宁深层次推覆构造前缘陡倾带变形构造研究

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