广西大瑶山西部一带勘查(新)区构造叠加晕法研究及应用

Study and Application of Structural Superimposed Halo Method in Exploration(New)Area of Western Dayaoshan,Guangxi

构造叠加晕找盲矿法在“攻深找盲”勘查中具有不可替代的作用,勘查(新)区构造叠加晕法的提出拓宽了其应用范围。为探索如何运用勘查(新)区构造叠加晕法对广西大瑶山1∶5万航磁异常桂C-2014-104进行异常查证和评价,本次研究引入元素相关性分析,并提出适用于勘查(新)区的分带方法。在李惠教授等总结的“参照实用理想模型”的基础上,建立了本研究区成矿预测的“参照实用模型”。利用“参照实用模型”对研究区内化探异常进行了评价和预测,预测了3处较典型的成矿有利部位,并对这些部位进行了排序。研究表明,主成矿元素的分带对建立预测模型较为关键,对预测结果影响较大。此外,勘查(新)区构造叠加晕法的应用结果表明该方法具有较高的预测准确性和实用性,可以为相关找矿评价工作提供可靠的地球化学依据。

The application of structural superimposed halos has played an irreplaceable role in the exploration of"deep and blind prospecting",and the proposal of structural superimposed halo method in exploration(new)areas has also expanded its application scope.In order to explore how to use the structural superimposed halo method in the exploration(new)area to verify and evaluate the aeromagnetic anomaly"GuiC-2014-104"at a scale of 1:50000 in the Dayaoshan area of Guangxi,this work introduced element correlation analysis and proposed a zoning method suitable for exploration(new)area.Based on the reference practical ideal model summarized by Professor Li Hui et al.,a reference practical model for metallogenic prediction in this study area was established.The reference practical model was used to evaluate and predict geochemical anomalies in the study area,and three typical favorable ore-forming sites were predicted and ranked.The study shows that the zoning of the main ore-forming elements is critical to the establishment of the prediction model and has a great influence on the prediction results.In addition,the application results of structural superimposed halo method in exploration(new)area show that this method has high prediction accuracy and practicability,which will provide reliable geochemical basis for related prospecting evaluation work.