STUDY ON THE PROTEROZOIC DYKE SWARM IN NORTH CHINA

SEISMOLOGY AND GEOLOGY ›› 1992, Vol. 14 ›› Issue (4): 351-357.

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STUDY ON THE PROTEROZOIC DYKE SWARM IN NORTH CHINA

Chen Xiaode, Shi Lanbin, Jia Sanfa

Insitute of Geology, State Seismological Bureau, Beijing 100029

Received:1990-05-31 Online:1992-12-09 Published:2009-11-25

华北元古代基性岩墙群研究

陈孝德, 史兰斌, 贾三发

国家地震局地质研究所北京 100029

基金资助:
地震科学联合基金(87113)

Abstract

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.

Key words: Basic dyke swarm, Subswarm, North China, Proterozoic, Extensive stress field

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。

关键词: 基性岩墙群, 亚群, 华北, 元古代, 拉张应力场

Chen Xiaode, Shi Lanbin, Jia Sanfa. STUDY ON THE PROTEROZOIC DYKE SWARM IN NORTH CHINA[J]. SEISMOLOGY AND GEOLOGY, 1992, 14(4): 351-357.

陈孝德, 史兰斌, 贾三发. 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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STUDY ON THE PROTEROZOIC DYKE SWARM IN NORTH CHINA

华北元古代基性岩墙群研究

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