| 从太古代片麻岩系推测地球的成因和发展 |
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| 引用本文： | 杨杰.从太古代片麻岩系推测地球的成因和发展[J].地震地质,1982,4(1):73. |
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| 作者姓名： | 杨杰 |
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| 作者单位： | 国家地震局地质研究所 |
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| 摘 要： | 古老变质岩系主要由前人称为“片麻岩系”和“结晶片岩系”两大套岩系组成。当地球成球之后,表面首先形成一层“基性焦壳”,在热封闭条件下,壳内产生花岗岩岩浆源,注入此原始地壳,并引起变质作用,形成基性正片麻岩地壳——第一层结晶地壳。然后,固体地壳发生形变和破裂,产生侵蚀、沉积,并伴随着岩浆活动、变质作用形成副片麻岩类——第二层结晶地壳。由此,本文以北京及其外围地区的古老变质岩系为依据,阐述了地球的形成和演化规律
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| 关 键 词： | 片麻岩系 太古代 测地球 地壳 结晶片岩 花岗岩浆 地槽 云蒙山 地盾 密云 |
ON THE ORIGIN AND DEVELOPMENT OF EARTH FROM THE ARCHAEAN GNEISSES |
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| Abstract: | In the area from Beijing to Chengde the extensive occurrences of the Archaean-Proterozoic crystalline rocks are composed mainly of two suits of metamorphic rock series; the Miyun Group in the lower member dominated by hypersthene-granulite and hornblende-granulite, being the type of orthogneisses and named "gneiss series" in the past: the Zhangjiafeng Group (or Huairou Group) in the upper member in predominance of crystalline schist, belonging to the paragneisses, and which used to be referred |
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