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地震 ›› 2008, Vol. 28 ›› Issue (3): 110-114.

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临潼—长安断裂活动性研究

郝凯, 田勤俭, 太龄雪, 张军龙   

  1. 中国地震局地震预测研究所, 北京 100036
  • 收稿日期:2007-11-19 修回日期:2008-01-05 出版日期:2008-07-31 发布日期:2021-10-29
  • 作者简介:郝凯(1982-), 男、 山东博兴人, 2005年在读硕士研究生, 主要从事地震地质等研究。
  • 基金资助:
    国家科技支撑计划课题(2006BAC13B01-02-02)

Study of the activity of Lintong-Chang'an fault

HAO Kai, TIAN Qin-jian, TAI Ling-xue, ZHANG Jun-long   

  1. Institute of Earthquake Science, CEA, Beijing 100036, China
  • Received:2007-11-19 Revised:2008-01-05 Online:2008-07-31 Published:2021-10-29

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摘要： 临潼—长安断裂是渭河盆地内部骊山凸起和西安凹陷之间一条重要的分界性断裂, 前人研究表明该断裂在全新世有强烈活动。 通过对该地区钻孔资料的收集整理、 跨断裂阶地测量分析以及晚更新世古土壤标志层错距的量测, 分析了早更新世后期以来断裂的活动性特征, 认为临潼-长安断裂在中更新统以前有过强烈活动, 中更新世以来断裂活动性明显减弱, 活动形式表现为张裂或小的位错。

关键词: 活断层, 渭河盆地, 临潼—长安断裂

Abstract: Lintong-Chang'an fault is an important boundary fault controlling Lishan uplift and Xi'an depression in Weihe basin. Previous study thinks that the fault activity has been strong during the Holocene, but this study shows a different result. According to drilling data analysis, river terrace and the field survey, we have studied the activity of Lintong-Chang'an fault, and the result shows that the fault had a big dislocation of lower Pleistocene ago. After that it becomes weaker, and the feature of the faulting movement is expressed as small extensional fractures and displacement.

Key words: Active fault, Weihe basin, Lintong-Chang'an fault

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