| 华北元古代基性岩墙群研究 |
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| 引用本文： | 陈孝德,史兰斌.华北元古代基性岩墙群研究[J].地震地质,1992,14(4):351-357. |
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| 作者姓名： | 陈孝德 史兰斌 |
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| 作者单位： | 国家地震局地质研究所，国家地震局地质研究所，国家地震局地质研究所 北京 100029，北京 100029，北京 100029 |
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| 摘 要： | 我国华北元古代基性岩墙群的岩石以辉绿结构为主,成分为镁低、钾钠稍高的拉斑玄武岩类。内含3个亚群,分別在1.5Ga、1.2Ca、0.9Ga前形成。推导出3期拉张应力场的方向分別为南北、北东-南西和北西-南东向
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| 关 键 词： | 基性岩墙群 亚群 华北 元古代 拉张应力场 |
STUDY ON THE PROTEROZOIC DYKE SWARM IN NORTH CHINA |
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| Chen Xiaode Shi Lanbin Jia Sanfa.STUDY ON THE PROTEROZOIC DYKE SWARM IN NORTH CHINA[J].Seismology and Geology,1992,14(4):351-357. |
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| Authors: | Chen Xiaode Shi Lanbin Jia Sanfa |
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| Abstract: | The rocks of dyke swarm in North China have commonly diabasic texture. Their composition is of tholeiite with low Mg and high K and Na. The swarm consists of three subswarms, which were formed 1500Ma, 1200Ma and 900 Ma ago, respectively.The relevant extensive stress field in three phases is suggested and their directions are NS, NE-SW and SE-NW. |
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| Keywords: | Basic dyke swarm Subswarm North China Proterozoic Extensive stress field |
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