| 桐柏地区古元古代桐柏杂岩系的岩石特征 |
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| 引用本文： | 郑双信,杜晓冉.桐柏地区古元古代桐柏杂岩系的岩石特征[J].地质调查与研究,2007,30(3):168-171. |
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| 作者姓名： | 郑双信 杜晓冉 |
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| 作者单位： | 河南省地矿局第一地质勘查院,河南南阳,473000 |
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| 基金项目： | 1∶5万祈礼-新集幅区域地质调查项目 |
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| 摘 要： | 前人认为桐柏杂岩系是一套强混合岩化或酸性片麻岩地层,划归为太古界桐柏山群。通过对其地质特征、岩石类型及岩性特征的分析,结合该套岩石的矿物成分、组构特征认为其原岩应属花岗岩类,整个岩体是由不同时代、不同类型花岗岩类组成的一个杂岩体。岩体内构造复杂,岩石普遍遭受了不同期次的韧性变形和碎裂岩化,并被改造为眼球状花岗质变晶糜棱岩或糜棱岩化片麻状花岗岩-花岗质变晶糜棱岩。
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| 关 键 词： | 桐柏杂岩系 花岗岩 韧性变形 碎裂变形 |
| 文章编号： | 1672-4135（2007）03-0168-04 |
| 修稿时间： | 2007-07-12 |
Petrological Characteristics of Palaeo-Proterozoic Tongbai Complex in Tongbai Area |
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| ZHENG Shuang-xin,DU Xiao-ran.Petrological Characteristics of Palaeo-Proterozoic Tongbai Complex in Tongbai Area[J].Geological Survey and Research,2007,30(3):168-171. |
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| Authors: | ZHENG Shuang-xin DU Xiao-ran |
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| Institution: | First Geological and Explorational Institute of Henan Bureau of Geology and Mineral Resources, Nanyang, 473000, China |
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| Abstract: | The Tongbai complex was taken for a series of strong migmatic or felsic gneissoid stratigraphic rocks and classified to be Archaean Tongbai Group.The characteristics of Tongbai complex in geology,typology,petrology,mineral composition,texture and structure show their granitic origin.The complex is composed of a series of different time intrusive and different compositional plutons.The deformation in these plutons is very complicated.The pluton rocks was reworked to be a eye-like metamorphic blastic mylonite or mylonitic gneissoid granite by different episodic ductile and cataclastic deformation. |
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| Keywords: | Tongbai complex granite ductile deformation cataclastic deformation |
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