吉林大车背沟地区水系沉积物元素组合分区特征

    Geochemical zonation of element association in stream sediments in Dachebeigou area, Jilin Province

    • 摘要: 采用R型因子分析方法, 对吉林大车背沟地区1:5万水系沉积物地球化学测量所取得的数据进行统计处理, 提取了具有代表性的7种因子组合类型, 并利用各因子组合得分值进行地球化学分区, 制作元素组合分区图, 由此将研究区内全部水系沉积物样品所反映的地球化学统计信息以区块的形式反映在一幅图中.通过对该图的判读分析, 不仅反映了不同地段中以相应元素组合类型为主的地球化学异常及其地质成因信息, 也揭示出相应元素的背景含量特征, 为从整体上认识该区地质、地球化学成矿特征提供了简明、清晰的参考资料.结合水系沉积物异常查证情况, 认为研究区金、铜镍和铌矿找矿潜力较大.

       

      Abstract: Using the R-mode factor analysis method, the paper statistically processes the data from 1:50 000 stream sediment geochemical survey in Dachebeigou area, Jilin Province. Seven representative factor combination types are extracted, and geochemical zoning is performed based on the scores of each factor combination to create the element association zoning map. Thus, the geochemical statistical information represented visually by all the stream sediment samples in the study area is exhibited in a block-based format. The interpretation and analysis of this map reveal not only the geochemical anomalies dominated by corresponding element associations in different sections and their geological genesis, but also the background content characteristics of relevant elements, which provides concise and clear references for comprehensively understanding the geological and geochemical metallogenic features of the region. Combined with the verification of stream sediment anomalies, it is concluded that the study area holds significant prospecting potential for gold, copper-nickel, and niobium deposits.

       

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