| 青海大风山天青石矿床地质特征及成因分析 |
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| 引用本文： | 马顺清,李善平,谢智勇,潘彤,白宗海,陈静,任华.青海大风山天青石矿床地质特征及成因分析[J].西北地质,2012(3):130-140. |
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| 作者姓名： | 马顺清 李善平 谢智勇 潘彤 白宗海 陈静 任华 |
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| 作者单位： | [1]中国地质大学,北京100083 [2]青海省人民政府,西宁810000 [3]青海省地质调查院,青海西宁810012 [4]青海省有色地质勘查局地质八队,青海西宁810012 |
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| 基金项目： | 青海三稀金属资源战略调查（2012000100630144）; 973计划前期研究专项课题（2010CB434808）致谢：参加野外工作的还有刘生军、谈生祥、叶中林等同志.野外调研期间,得到青海金瑞矿业公司相关领导的大力支持和帮助,在此一并表示衷心感谢. |
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| 摘 要： | 大风山天青石矿床位于柴达木盆地西北部,由Ⅰ、Ⅱ、Ⅲ、Ⅳ四个矿区组成,赋矿地层为第三系上新统狮子沟组,含矿层位不稳定,矿体多呈薄层状、扁豆状或透镜状产于含碳钙质泥岩中,矿石主要为天青石、菱Sr矿等;矿区内东西、北东东向次级断裂及舒缓短轴复式背斜构造严格控制着天青石矿体的产出形态;成矿物源具有多源性,一方面周边山系含Sr水为主要补给源,其次为富Sr的油田水。另外,深部含Sr卤水的补给也具有重要作用;矿床成因具有陆相湖泊化学沉积-热水沉积叠加改造型矿床特征。
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| 关 键 词： | 大风山 天青石 地质特征 矿床成因 |
Characteristics and Genetic Analysis of Celestite Deposits in Dafeng Mountain Area, Qinghai |
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| MA Shun-qing LI Shan-ping XIE Zhi-yong PAN Tongs,BAI Zong-hai,CHEN Jing,REN Hua.Characteristics and Genetic Analysis of Celestite Deposits in Dafeng Mountain Area, Qinghai[J].Northwestern Geology,2012(3):130-140. |
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| Authors: | MA Shun-qing LI Shan-ping XIE Zhi-yong PAN Tongs BAI Zong-hai CHEN Jing REN Hua |
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| Institution: | 1. China Geological University, Beijing 100083, Chinal 2. Peoplds Government of Qinghai Province, Xining 810000, China; 3. Qinghai Institute of Geological Survey, Xining, Qinghai 810012, China; 4. Geology eight teams of Qinghai Nonferrous Geological Exploration Bureau, Xining 810012, China) |
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| Abstract: | Celestine deposit of Dafeng mountain is located in northwestern of Qaidam Basin, it is composed of I , II , III, IV four deposits, and ore-formation is Shizigou group of the Pliocene in Tertiary strata, with seam-bit of unstable ore, ore body mostly by thin-bedded, lens-shaped or lenticular produced in carbon-bearing calcareous mudstone, and ore mainly for celestite, strontianite, etc. The EW, NEE sec- ondary faults and the compound anticline with relieve minor axis strictly controlled the celestite ore output patterns in the Dafeng mountain ore area. Strontium-containing material source of mineralization is with multi-source in the area. On the one hand, water with strontium of the surrounding mountains is the main supplying source; on the other hand, water with oil fields of strontium-rich is supplying source too. In ad- dition, brine with strontium in the deep crust plays an important role as supplying source; Genesis have the characteristics by continental lake chemical deposition-hydrothermal sedimentary superimposed trans- formation type in the Dafeng mountain area. |
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| Keywords: | Dafeng mountain celestite geological characteristics genesis |
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