| 马超营断裂以北熊耳群火山岩系是形成于弧后裂陷盆地环境的基性-酸性双峰态火山岩组合吗?——与胡德祥等同志商榷 |
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| 引用本文： | 郭继春,姚文平,许红忠.马超营断裂以北熊耳群火山岩系是形成于弧后裂陷盆地环境的基性-酸性双峰态火山岩组合吗?——与胡德祥等同志商榷[J].地球科学,1992(4). |
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| 作者姓名： | 郭继春 姚文平 许红忠 |
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| 作者单位： | 南京大学地球科学系
(郭继春，姚文平)，南京大学地球科学系(许红忠) |
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| 摘 要： | 中元古界熊耳群火山岩分布于华北地台南缘。本文提出马超营断裂以北火山岩是以安山岩占主导地位的玄武岩—安山岩—英安岩—流纹岩组合,而不是胡德祥等人提出的基性—酸性双峰态组合,它们形成的构造环境为安第斯型火山弧。火山岩上部的粗安岩—粗面岩组合形成的构造环境为弧内盆地。
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| 关 键 词： | 火山岩 伸展构造 熊耳群 |
DISCUSSION ON FEATURES OF VOLCANIC ROCKS OF THE MID PROTEROZOIC XIONGER GROUP AND THEIR ROCK-FORMING TECTONIC ENVIRONMENTS |
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| Guo Jichun Yao Wenping Xu Hongzhong.DISCUSSION ON FEATURES OF VOLCANIC ROCKS OF THE MID PROTEROZOIC XIONGER GROUP AND THEIR ROCK-FORMING TECTONIC ENVIRONMENTS[J].Earth Science-Journal of China University of Geosciences,1992(4). |
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| Authors: | Guo Jichun Yao Wenping Xu Hongzhong |
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| Abstract: | The volcanic rocks of the Mid-Proterozoic Xionger Group are distributed at the southern edge of the North China plate. The authors realize that the volcanic rocks north to the Machaoying fault do not show the bi-model features typical of a back-arc basin suggested by Hu Dexiang et al. ;they are composed of basalt,andesite dacite and rhyolite,dominated by andesite,and were formed in an Andean-type volcanic arc and the association of trachyandesite and trachyte formed in the intra-arc basin. |
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| Keywords: | volcanic rock extensional structure Xionger Group |
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