| 马边-永善地震带构造形式及地震特征 |
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| 引用本文： | 韩德润.马边-永善地震带构造形式及地震特征[J].地震地质,1993,15(3):253-260. |
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| 作者姓名： | 韩德润 |
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| 作者单位： | 国家地震局地壳应力研究所 北京 |
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| 摘 要： | 根据该地褶皱形态、断裂特征、应力场分布等资料研究,指出马边～永善及其两侧的构造形迹自西而东有一个相应强～弱变化过程。推测其力源主要来自西部喜马拉雅构造域的侧向推挤,所形成的马边-永善地震带是处于马边-昭通-曲靖断裂构造带的一部分,从而成为川西经向构造带的东部边界,也是青藏高原东南边缘与四川盆地西南边缘的浅部界线
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| 关 键 词： | 马边-永善地震带 推覆构造 盖层滑脱 喜马拉雅构造域 |
THE TECTONIC PATTERN AND SEISMIC CHARACTERISTICS OF MABIAN-YONGSHAN SEISMIC ZONE |
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| Han Derun.THE TECTONIC PATTERN AND SEISMIC CHARACTERISTICS OF MABIAN-YONGSHAN SEISMIC ZONE[J].Seismology and Geology,1993,15(3):253-260. |
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| Authors: | Han Derun |
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| Abstract: | Many investigations have been made on a series of strong earthquakes that occurred in Mabian-Yongshan-Leipo, Daguan area successively. Basing on the characteristics of folds and faults and distribution of stress, we suggest that there exists a relative variation process, being from strong to weak, from west to east. It is inferred that the source of stress may be derived from a lateral pushing force and the resulting seismic zone forms a part of Mabian-Zhaotong-Qujing fault zone, being an eastern boundary of longitudinal tectonic zone in West Sichuan, and also being an earthquake-controlling basement fault zone along the boundary between geotectonic elements, Qinghai-Xizang plateau and Sichaun basin. |
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| Keywords: | Mabian-Yongshan seismic zone Imbricate structure Overlying strata decollement Himalayan tectonic domain |
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