| 基岩区断层活动特征和时间的研究——以康定-磨西断裂段为例 |
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| 引用本文： | 刘行松,胥怀济.基岩区断层活动特征和时间的研究——以康定-磨西断裂段为例[J].地震地质,1993,15(2):123-130. |
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| 作者姓名： | 刘行松 胥怀济 |
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| 作者单位： | 国家地震局地质研究所，国家地震局地质研究所，国家地震局地质研究所，国家地震局地质研究所，国家地震局地质研究所，国家地震局地质研究所，国家地震局地质研究所，国家地震局地质研究所 北京 100029，北京 100029，北京 100029，北京 100029，北京 100029，北京 100029，北京 100029，北京 100029 |
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| 摘 要： | 为了探讨基岩裸露区断层的活动特征、期次和时间,在鲜水河断裂带东南段的康定-磨西断裂段采集了一系列断层岩和断层泥样品,运用TL、ESR、K-Ar、石英形貌分析和变形显微构造分析法进行了综合测试。结果表明,断裂段经历了多种机制(韧性剪切和脆性断裂)、多期次、多种运动方式(左旋和右旋)的活动,最新一次较强烈活动的下限时间是晚更新世末或全新世初
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| 关 键 词： | 康定-磨西断裂 断层活动 断层物质 同位素测年 石英形貌 显微构造 |
STUDY ON ACTIVITY FEATURE AND TIME OF THE FAULTS IN BEDROCK REGION-TAKING KANGDING-MOXI FAULT SEGMENT AS AN EXAMPLE |
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| Liu Xingsong Xu Huaiji Shi Lanbin Tang HanjunJi Fengju Lin Chuanyong Guo Jindi He Yongnian.STUDY ON ACTIVITY FEATURE AND TIME OF THE FAULTS IN BEDROCK REGION-TAKING KANGDING-MOXI FAULT SEGMENT AS AN EXAMPLE[J].Seismology and Geology,1993,15(2):123-130. |
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| Authors: | Liu Xingsong Xu Huaiji Shi Lanbin Tang HanjunJi Fengju Lin Chuanyong Guo Jindi He Yongnian |
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| Abstract: | To study the activity feature, phase and time of the faults in a bedrock exposing region, a series of samples of fault rocks and fault gouges are collected along the Kangding -Moxi fault segment. TL. ESR. K-Ar techniques,analyses of quartz surface texture and deformation microstructure are used for the comprehensive research. The results show that the fault segment has undergone multiperiodic activity with multiple types (ductile shearing-brittle fracture) and multiple patterns (left- lateral- right- lateral) ,and the lower limit of the lost strong activity was around the end of late pleistocene or the begining of Holocene (ca. 10000 years) . |
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| Keywords: | Kangding Moxi fault Fault activity Fault material Isotopic dating Surfase texture of quartz Microstructural analysis |
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