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| 陕西二台子铜金床钠长石碳酸（角砾）岩类特征及形成构造背景分析 | |
| 引用本文： | 方维萱,张国伟.陕西二台子铜金床钠长石碳酸（角砾）岩类特征及形成构造背景分析[J].岩石学报,2000,16(3):392-400. |
| 作者姓名： | 方维萱 张国伟 |
| 作者单位： | 1. 中国科学院地球化学研究所矿床地球化学开放研究实验室,贵阳,550002;西北有色金属地质勘查局,西安,710054 2. 西北大学地质学系,西安,710069 3. 中国科学院地球化学研究所矿床地球化学开放研究实验室,贵阳,550002 4. 西北有色金属地质勘查局,西安,710054 |
| 基金项目： | 国家重大基础研究规划项目 (G19990 43 2 0 0 ),中国有色金属工业总公司人才培养基金资助 |
| 摘 要： | 从岩石学、矿物学、岩石化学、地球化学、稀土元素等方面研究了二台子铜金矿内长石炭酸（角砾）岩类地质地球化学特征。晚泥盆世－石炭纪,在区域幔羽构造作用下,深部热流体沿先存在构造通道上升进入镇安二台子三级热水沉积盆地之中,形成了石英重晶石炭酸角砾岩、碳酸角砾岩、复成分角砾岩、钠长岩、钠长石碳酸岩,受同性断裂及层位控制明显,并构成了金的矿源层及普遍金矿化。燕山期,具有幔源特征的深部含矿热流体在北东、北西向 |
| 关 键 词： | 构造背景 铜金矿床 钠长石碳酸岩 |
Analysis on tectonic background of formation and characteristics of albite carbonate brecciaite from Ertaizi Cu-Au deposits in the Qinling orogen |
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| Fang Weixuan,Zhang Guowei,Hu Ruizhong,Lu Jiying,Yang Yaomin and Wang Ruiting. Laboratory of Ore Deposit Geochemistry.Analysis on tectonic background of formation and characteristics of albite carbonate brecciaite from Ertaizi Cu-Au deposits in the Qinling orogen[J].Acta Petrologica Sinica,2000,16(3):392-400. | |
| Authors: | Fang Weixuan Zhang Guowei Hu Ruizhong Lu Jiying Yang Yaomin and Wang Ruiting Laboratory of Ore Deposit Geochemistry |
| Institution: | Fang Weixuan,Zhang Guowei,Hu Ruizhong,Lu Jiying,Yang Yaomin and Wang Ruiting. Laboratory of Ore Deposit Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang,Chin,. Department of Geology,Northwest University,Xian |
| Abstract: | Based on research on petrology, mineralogy, petrochemistry, geochemistry, and REE for albite carbonate brecciaite, geological and geochemical characteristic of albite carbonate brecciaites from Ertaizi copper-gold deposits in the Qinling orogen have been discussed in the paper. From Late Devonian epoch to Carboniferous period, under tectonic formation of regional penetration of Mantle feather, hydrothermal fluids in depth upward alone pre-existing tectonic feeder and poured into Ertaizi hydrothermal subbasin on the sea bed, so hydrothermal sedimentary rocks were formed and were controlled by synsedimentary faults and strata. These rocks which were main parts of gold source layer with gold mineralization consist of quartz barite carbonate breccia, carbonate breccia, poly-component breccia, albite, albite carbonate rock. In Yanshanian movement, in the intersections of NE trending fault, NW trending fault and EW trending fault, pre-existing hydrothermal brecciaite were superimposed by hydrothermal fluids which derived from regional penetration of Mantle feather, so albite carbonate breccia in barrel-shaped were formed. Copper-gold deposits hosted in Ertaizi albite carbonate breccia in the Qinling orogen was formed by the same hydrothermal fluid. |
| Keywords: | Albite carbonate brecciaite Tectonic background Diagenismmineralization of hydrothermal fluid Ertaizi Qinling orogen |
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