| 浅层地震剖面揭示固原市清水河东侧断裂特征 |
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| 引用本文： | 花鑫升,姬计法,酆少英,杜鹏,宋威,刘增祺.浅层地震剖面揭示固原市清水河东侧断裂特征[J].大地测量与地球动力学,2019,39(8):794-797. |
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| 作者姓名： | 花鑫升 姬计法 酆少英 杜鹏 宋威 刘增祺 |
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| 作者单位： | 中国地震局地球物理勘探中心,郑州市文化路45号,450002;宁夏回族自治区地震局,银川市北京东路244号,750001 |
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| 摘 要： | 为查明清水河东侧断裂的产状、性质及其浅部构造特征，跨断裂开展高分辨率的浅层地震探测，获得高信噪比的浅层地震反射叠加剖面。根据浅层地震剖面结果并结合该区域地质资料，对该断裂的浅部构造特征进行分析和讨论。结果表明，清水河东侧断裂为一条走向近SN、倾向E的逆断层，其浅部为由2~3条断层组成的“Y”字形构造，并错断埋深约10~30 m的第四系沉积层，属第四纪以来的隐伏活动断裂。
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| 关 键 词： | 固原市 活断层探测 浅层地震剖面 清水河东侧断裂 |
Characteristics of the Qingshui River East Fault in Guyuan City as Revealed by Shallow Seismic Profiles |
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| HUA Xinsheng,JI Jifa,FENG Shaoying,DU Peng,SONG Wei,LIU Zengqi.Characteristics of the Qingshui River East Fault in Guyuan City as Revealed by Shallow Seismic Profiles[J].Journal of Geodesy and Geodynamics,2019,39(8):794-797. |
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| Authors: | HUA Xinsheng JI Jifa FENG Shaoying DU Peng SONG Wei LIU Zengqi |
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| Abstract: | In order to investigate the occurrences, properties and shallow tectonic features of the east-Qingshui river fault, we complete high resolution shallow seismic profiles crossing the fault and obtain shallow seismic reflection stacked profiles which have higher signal-noise ratio. According to these results, and combined with geological data, we analyze and discuss the shallow structures features of the fault. The results show that east-Qingshui river fault is a near SN trending and E dipping reverse fault. In the shallow position the east-Qingshui river, the fault shows “Y” structure which consists of 2-3 fault. The fault disrupts 10~20 m Quaternary strata in the shallow part, therefore it buried active faults in the Quaternary period. |
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| Keywords: | Guyuan city active fault exploration shallow seismic reflection profile east-Qingshui river fault |
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