SEISMOLOGY AND GEOLOGY ›› 1994, Vol. 16 ›› Issue (1): 89-96.

• Brief Report • Previous Articles    

CHAKACTERISTICS OF ILLITE MINERALS IN FAULT GOUGE FROM XIAOWAN, YUNNAN AND THEIR GEOLOGICAL SIGNFICANCE

Zhang Bingliang1, Liu Guifen1, Fang Zhongjing1   

  1. 1. Institute of Geology, SSB, Beijing 100029;
    2. The Scientific Research Institute for Petroleum Exploration and Development, Beijing 100083
  • Received:1992-06-01 Revised:1993-02-01 Online:1994-03-09 Published:2009-11-25

云南小湾断层泥中伊利石矿物特征及其意义

张秉良1, 刘桂芬1, 方仲景1, 林西生2, 郑乃宣2   

  1. 1. 国家地震局地质研究所, 北京 100029;
    2. 石油勘探开发科学院, 北京 100083
  • 基金资助:
    地震科学联合基金会资助(92218)

Abstract: In this paper,characteristics of illite in fault gouges are studied by SEM, XRD and chemicalanalysis.The study shows that illite belongs to I +ISIl structure;expansibility takes approximately 15%; IMis of multiple paterns interlayer positive ions 2Ca+Na+K≈l;b0 value of illite is 8.993Å in fault gouge at Xiaowan,which show that mechanisms of fault movement in Xiaowanare of low pressure and temperature(<200℃)。

Key words: Clay mineral, IIIite, X-ray diffraction, Fault gouge, Yunnan

摘要: 根据扫描电镜观察、X射线衍射和化学分析,研究断层泥中伊利石矿物的特征。研究表明,小湾断层泥中伊利石属I+ISII结构,膨胀层约占15%,IM多型,层间阳离子2Ca+Na+K≈1,伊利石的b0值等于8.993Å,这些参数反映了小湾断层活动的机制为低压、低温(<200℃).

关键词: 粘土矿物, 伊利石, X射线衍射, 断层泥, 云南