| 云南大平糜棱岩化碱性花岗岩岩石地球化学特征及成因讨论 |
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| 引用本文： | 夏斌,林清茶,张玉泉.云南大平糜棱岩化碱性花岗岩岩石地球化学特征及成因讨论[J].地质学报,2006,80(2):287-293. |
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| 作者姓名： | 夏斌 林清茶 张玉泉 |
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| 作者单位： | 中国科学院边缘海地质重点实验室,广州地球化学研究所,510640;中国科学院边缘海地质重点实验室,广州地球化学研究所,510640;中国科学院边缘海地质重点实验室,广州地球化学研究所,510640 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目(编号KZCX2-SW-117)，国家自然科学基金项目(编号40072022)资助成果。 |
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| 摘 要： | 本文在野外工作基础上,系统研究了云南大平糜棱岩化碱性花岗岩岩石结构构造、矿物组成、主微量元素和锆石特征等。根据岩体本身还残留有层理,在糜棱岩化之前的岩石具花岗变晶结构和含有反映区域变质成因的钠铁闪石造岩矿物,以及锆石高度富集和显示有一定层位等,认为云南大平糜棱岩化碱性花岗岩为沉积变质成因。
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| 关 键 词： | 成因和地球化学 糜棱岩化 碱性花岗岩 金平县大平 云南 |
| 修稿时间： | 2004年12月30 |
Geochemical Characteristics and Genesis of the Daping Mylonitized Alkali Granite in Yunnan Province |
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| XIA Bin,LIN Qingch,ZHANG Yuquan Laboratory of Marginal Sea Geology,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou.Geochemical Characteristics and Genesis of the Daping Mylonitized Alkali Granite in Yunnan Province[J].Acta Geologica Sinica,2006,80(2):287-293. |
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| Authors: | XIA Bin LIN Qingch ZHANG Yuquan Laboratory of Marginal Sea Geology Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou |
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| Abstract: | This paper, based on filed work, studies the structure and texture, mineral compositions, characteristics of major and trace elements, as well as zircons of the rocks in the study area. It is considered that the mylonitized alkaline granite is of sedimentary-metamorphic genesis in view of the following facts: bedding is exhibited in the rocks, before mylonitization the rocks had granoblastic texture and rock-forming minerals such as natro-griinerite, which reflect region metamorphic genesis, and the zircons are highly concentrated in certain layers. |
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| Keywords: | genesis and geochemistry mylonitization alkali granite Daping in Jingping County Yunnan Province |
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