| 渭河盆地断层活动反映的第四纪构造事件初步研究 |
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| 引用本文： | 田勤俭,申旭辉,冯希杰,韦开波.渭河盆地断层活动反映的第四纪构造事件初步研究[J].地震地质,2003,25(1):146-154. |
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| 作者姓名： | 田勤俭 申旭辉 冯希杰 韦开波 |
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| 作者单位： | 1. 中国地震局分析预报中心,北京,100036
2. 陕西省地震局,西安,710068 |
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| 基金项目： | 国家重点基础研究发展规划项目 (G19980 4 0 70 10 2 )资助。 |
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| 摘 要： | 研究了渭河盆地南缘和北缘几条断裂第四纪活动性的迁移变化。利用横跨断裂的构造地层剖面 ,结合断裂上覆黄土地层的年代学研究结果 ,对断裂活动强度迁移变化的演化阶段进行了研究。结果表明 ,在大约 80～ 90万年前 ,渭河盆地南缘的临潼 -长安断裂带的活动性发生了显著变化 ,骊山山前断裂也有活动性迁移现象 ,渭南塬前断裂开始强烈活动 ,渭南塬全面抬升 ;12万年前左右 ,渭河盆地北缘的口镇 -关山断裂活动性明显减弱。该区断层活动的这些变化是对第四纪中晚期的 2次重要构造事件的反映
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| 关 键 词： | 构造事件 活断层 第四纪 年代 渭河盆地 |
| 文章编号： | 0253-4967(2003)01-0146-09 |
| 修稿时间： | 2002年10月16 |
PRIMARY STUDY ON QUATERNARY TECTONIC EVENTS BASED ON VARIATION OF FAULT ACTIVITY IN WEIHE BASIN |
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| TIAN Qin-jian SHEN Xu-hui FENG Xi-jie WEI Kai-bo Center for Analysis and Prediction,China Seismological Bureau,Beijing ,China Seismological Bureau of Shannxi Province,Xi'an ,China.PRIMARY STUDY ON QUATERNARY TECTONIC EVENTS BASED ON VARIATION OF FAULT ACTIVITY IN WEIHE BASIN[J].Seismology and Geology,2003,25(1):146-154. |
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| Authors: | TIAN Qin-jian SHEN Xu-hui FENG Xi-jie WEI Kai-bo Center for Analysis and Prediction China Seismological Bureau Beijing China Seismological Bureau of Shannxi Province Xi'an China |
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| Affiliation: | TIAN Qin-jian 1) SHEN Xu-hui 1) FENG Xi-jie 2) WEI Kai-bo 1) 1) Center for Analysis and Prediction,China Seismological Bureau,Beijing 100036,China 2) Seismological Bureau of Shannxi Province,Xi'an 710068,China |
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| Abstract: | Recognition of major tectonic events and tectonic cycles in Quaternary is an important topic that attracts more and more attention of many geologists. Recently, the research in this aspect has focused mainly on Quaternary sedimentation and geomorphologic evolution, while little attention has been paid to the study of fault evolution, which is directly related to tectonic cycle or tectonic event. This is mainly because of the lacking of geological evidence and the limitation of dating technique. Nevertheless |
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| Keywords: | tectonic event active fault Quaternary Weihe Basin |
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