| 广西平果堆积型铝土矿成矿封闭环境研究 |
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| 引用本文： | 祝瑞勤,奚小双,吴堑虹,杨震.广西平果堆积型铝土矿成矿封闭环境研究[J].大地构造与成矿学,2011,35(3):386-393. |
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| 作者姓名： | 祝瑞勤 奚小双 吴堑虹 杨震 |
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| 作者单位： | 1. 中南大学地球科学与信息物理学院,湖南长沙410083;长沙有色冶金设计研究院,湖南长沙410011
2. 中南大学地球科学与信息物理学院,湖南长沙,410083 |
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| 基金项目： | 中国铝业集团重要科研项目 |
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| 摘 要： | 通过堆积矿矿-土组合特征的研究,揭示了平果矿区在强烈剥蚀环境中堆积矿保存的地质条件,将矿层结构类型划分为斜坡型、洼地型和塌陷型,明确了它们与矿区岩溶地貌分带对应、继承演化的关系.通过矿层地球化学分析,在矿土物源关系、风化程度、成矿相关性等方面揭示了堆积矿在演化过程中风化强、剥蚀弱的特点,这种特点有利于铝土矿的成矿.矿层...
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| 关 键 词： | 铝土矿层 物质来源 岩溶封闭地貌 广西平果 |
Enclosed Environment for Mineralization of Accumulative Bauxites in Pingguo, Guangxi |
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| ZHU Ruiqin,XI Xiaoshuang,WU Qianhong,YANG Zhen.Enclosed Environment for Mineralization of Accumulative Bauxites in Pingguo, Guangxi[J].Geotectonica et Metallogenia,2011,35(3):386-393. |
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| Authors: | ZHU Ruiqin XI Xiaoshuang WU Qianhong YANG Zhen |
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| Abstract: | The study investigates the preservation of the Pingguo accumulative bauxite deposit under intensive denudation condition via the study of the ore-soil composition.The ore beds can be divided into hill-slope,depression and collapse,and inherited karst landforms.The geochemical characteristics of the soil and ore beds indicate that the strong weathering and weak erosion favored the bauxite mineralization.The preserve modes of the bauxites vary with increasing degree of karst development and the shift of drainage pattern from surface to underground.Hence,the enclosed environment resulted in the accumulation of bauxite while the vertical crustal movement and pilot surface erosion may also lead to open condition and cause the loss of accumulative bauxite. |
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| Keywords: | ore beds of accumulative bauxite material source enclosed condition of karst landform Pingguo Guangxi |
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