南迦巴瓦构造结西侧里龙断裂晚第四纪活动特征

Technology for Earthquake Disaster Prevention(2017)

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Abstract
本文通过卫星影像解译、地质地貌调查、地质探槽开挖、断错地貌测量和样品年代学测试,对南迦巴瓦构造结西侧的里龙断裂晚第四纪活动特征进行了分析和研究,结果表明:里龙断裂是一条以右旋走滑活动为主、兼有挤压逆冲的北北西向断裂,其最新活动时代为全新世;该断裂晚第四纪以来的平均水平滑动速率为3-4mrn/a,平均垂直滑动速率为0.10—0.15mm/a.研究还表明,南迦巴瓦构造结晚第四纪以来的向北俯冲运动已经停止,喜马拉雅东构造结地区的构造变形主要受阿萨姆构造结的俯冲影响.
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Key words
Namcha Barwa Syntaxis,Lilong fault,Late Quaternary movement characteristics
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