| 红河和曲江断裂带断层泥的特征及其地震地质意义 |
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| 引用本文： | 杨主恩,胡碧茹,杨继武.红河和曲江断裂带断层泥的特征及其地震地质意义[J].地震地质,1985,7(1):25. |
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| 作者姓名： | 杨主恩 胡碧茹 杨继武 |
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| 作者单位： | 国家地震局地质研究所
(杨主恩，胡碧茹)，云南省地震局(杨继武) |
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| 摘 要： | 活断层产物的研究近年来受到国内外地震地质学者的关注。笔者对地质、地震证据充分的活断层——红河断裂带和曲江断裂带的断层泥进行多种手段的分析研究。它们的显微构造、粒度分布,组构特征以及石英碎砾的SEM显微形貌等显示了活断层中的长期蠕滑研磨作用、地震过程的快速剪切运动以及活断层特定条件下的退变质作用和其他化学作用等成因特征。综合分析指出,红河断裂带南段可能是蠕滑运动为主的活断层,其北段和曲江断裂带则为粘滑运动为主的活断层
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| 关 键 词： | 断层泥 曲江 红河断裂带 地震地质意义 活断层 伊利石 石英碎砾 擦痕 云南 粘土矿物 |
THE CHARACTERISTICS OF GOUGE FROM HONGHE AND QUJIANG FAULT ZONES AND THEIR SEISMO-GEOLOGICAL IMPLICATIONS |
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| Abstract: | The study of products from active fault has been concened by seismogeologists recently.Fault gouge from Honghe and Qujiang active fault zones has been studied.It is,shown that microstructure,grain size,fabric and SEM micro-surface texture on quartz fragment in gouge were formed during steady-state slip stage,rapid shear motion associated with earthquakes and retro-metamorphism and other chemical process in active fault zone.As the result of this study,the author pointed that the south segmetn of Honghe fault zone may be steady-state slip active fault,and the north segment of Honghe fault zone and Qujiang fault zone are stick slip active fault |
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