| 袁振国,陈秋伶,钟俊靖,何国建,钟文.西藏尼雄地区水系沉积物地球化学特征及异常分布规律[J].地质找矿论丛,2013,28(4):620-628 |
| 西藏尼雄地区水系沉积物地球化学特征及异常分布规律 |
| Stream sediment geochemical characteristics and the anomly distribution pattern in Nixiong area, Tibet |
| 投稿时间：2013-03-01 修订日期：2013-07-01 |
| DOI：10.6053/j.issn.1001-1412.2013.04.019 |
| 中文关键词: 尼雄地区 水系沉积物 地球化学特征 西藏自治区 |
| 英文关键词:Nixiong area stream sediment geochemical charateristics Tibet |
| 基金项目:中国地质调查局大调查项目“西藏尼雄地区地质矿产调查”（编号：1212011018006）资助。 |
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| 中文摘要: |
| 西藏尼雄地区位于拉达克—冈底斯—拉萨—腾冲陆块，区内已发现尼雄特大型富磁铁矿、日阿中型铜多金属矿等矿床。文章以1：5万水系沉积物地球化学调查为基础，总结水系沉积物地球化学特征及分布规律。研究发现区内成矿作用与亲铜元素和铁族元素有关，二叠系昂杰组、拉噶组是区内金矿的有利地层，敌布错组是寻找银、锌、铅、镉矿产的最佳地层，所圈化探异常与已有矿（化）点区域套合较好。 |
| 英文摘要: |
| Nixiong area in Tibet is geotectonically located in the Ladakh-Gangdise-Lasa-Tengchong landmass. In the area have been discovered Nixiong large sized rich magnetite deposit and Riar medium-sized copper polymetallic deposit etc, Based on stream sediment geochemical survey at scale 1:5 0000 the geochemical characteristics and anomly distribution pattern are summarized. Cluster analysis of ore elements shows that mineralization in the area is related to chalcophile elements and iron group elements. Ore-bearing coefficients of the main strata demonstrate that Permian Angjie formation-and Lage formation are the favorable ore host rocks and Dibucuo formation is the optimum horizon for further exploration of Ag, Zn, Cd, Pb mineral resources in the area. Systematic investigation of mineral resources in the area indicates that geochemical anomlies located are well coincided with the known ore (mineralization) occurrences. |
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