青藏高原嘉黎断裂晚第四纪运动特征

Acta Scientiarum Naturalium Universitatis Pekinensis(2013)

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Abstract
通过野外考察与GPS观测数据的综合分析,对嘉黎断裂晚第四纪运动特征得到一些新的认识。嘉黎断裂不是整体右旋走滑断层,其不同构造部位的运动性质和速率具有分段差异特征。以东构造结为界大致分为3段:东构造结以西为嘉黎断裂西北段,东构造结顶端易贡通麦段为嘉黎断裂中段,东构造结东南部分为嘉黎断裂的东南段。西北段为右旋挤压运动,走滑速率3.2~5.8 mm/a;中段弱右旋挤压运动,走滑速率1.3~2.0mm/a;东南段为左旋挤压运动,走滑速率3.7~4.0 mm/a。
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Key words
Jiali Fault,Tibetan Plateau,GPS velocity profile,Late Quaternary
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