| 初论华北板内地震断层特征及其与地壳、上地幔动力学过程的关系 |
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| 引用本文： | 叶洪,张文郁.初论华北板内地震断层特征及其与地壳、上地幔动力学过程的关系[J].地震地质,1980,2(1):27. |
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| 作者姓名： | 叶洪 张文郁 |
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| 作者单位： | 国家地震局地质所
(叶洪)，国家地震局地质所(张文郁) |
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| 摘 要： | 本文研究了华北121个地震断层的错动方式,40个地震断层的走向,15个地震断层的破裂方式与扩展方向。在此基础上发现了华北板内地震断层特征与上地幔隆起带之间的某些规律性联系。作者认为:由于上地幔软流圈的异常活动,上地幔顶部隆起的底辟作用以及重力均衡作用,华北大陆地壳正在经历着一种透镜化的拉薄改造过程,据此可以解释华北板内地震断层的特征,并进而探讨华北板内地震高强度性的原因
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| 关 键 词： | 板内地震 华北地震 地震断层 大陆地壳 断层特征 隆起带 动力学过程 海城地震 拉薄 上地幔 |
THE CHARACTERISTICS OF INTRAPLATE EARTHQUAKE FAULTS IN NORTH CHINA AND THEIR RELATIONSHIP TO THE DYNAMICAL PROCESSES IN EARTH'S CRUST AND UPPERMOST MANTLE |
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| Abstract: | The mechanical nature of 121 earthquake faults, the strikes of 40 events and the directions of fracture propagation of 15 events are discussed in this paper.On this background,some relationships between the strikes of intraplate earthquake faults in North China and the distributions of uplifted zones of uppermost mantle have been found, e. g. within these zones the earthquake faults run nearly parallel tp their elongation, while on their opposing sides the earthquake faults are mainly perpendicu |
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