| 岷江上游地区第四纪构造应力状态及其与地震的关系 |
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| 引用本文： | 杨景春,邓天岗,王元海,闻学泽.岷江上游地区第四纪构造应力状态及其与地震的关系[J].地震地质,1979,1(3):68. |
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| 作者姓名： | 杨景春 邓天岗 王元海 闻学泽 |
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| 作者单位： | 北京大学地质系
(杨景春)，四川省地震局
(邓天岗，王元海)，北京大学地质系(闻学泽) |
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| 摘 要： | 本文用地质、地貌、地震等综合方法研究第四纪构造应力状态。本区第四纪主压应力为北东东—南西西方向。在这种应力作用下,区内南北向断裂呈压扭方式活动,东西向断裂以张扭方式活动,北西向构造强烈隆起。现今小震活动多沿东西向断裂分布
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| 关 键 词： | 第四纪 岷江上游 地震 岷江断裂 构造应力 砾岩 大断裂 北西向构造 北东东 分水岭 |
THE QUATERNARY TECTONIC STRESS STATES OVER THE UP-STREAM AREA OF MIN JIANG RIVER IN SICHUAN AND ITS RELATIONS TO EARTHQUAKES |
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| Abstract: | The Quaternary tectonic stress states over the mentioned area and its relations to earthquakes are studied by combining the methods of geology, geomorphology. seismology and repeated levelling. Under the action of NEE-SWW trending horizontal principal compressional stress during the Quaternary period, the NW trending structure of this area was intensively upwarded and the EW trending faults suffered a tension-shear displacement leading to release the energy and to cause a series of smaller earth |
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