奇异性理论在富宁水合口矿区土壤地球化学异常圈定中的应用

Application of singularity theory to geochemistry anomaly delineation in Shuihekou mining area,Funing

文章以云南富宁水合口金矿土壤地球化学为研究对象,应用分形方法确定了研究区土壤地球化学异常符合分形分布并求出异常下限,对比分析传统方法与奇异性分析法圈定异常的效果,最后使用主成分分析法圈定综合异常。结果表明,奇异性方法不会以统一的阀值来进行圈定异常,具有对矿化弱异常敏感,圈定的异常中心明显,干扰信息少的优点,由主成分分析法圈出的综合异常极具代表性,与实际地质情况吻合度高,对进一步找矿工作具明显指示性意义。

In this paper,take Shuihekou mining area as research object,applied fractal method to confirm the soil geochemistry of anomaly conforms to the fractal distribution and calculated anomaly threshold,compare the effect of traditional method and singularity theory to delineate anomalies,finally principal component analysis to delineate the comprehensive anomaly was used.Result shows that the singularity method does not take the unified threshold to delineate anomaly,with the advantages of weak anomaly sensitive to miner-alization,obvious delineated anomaly center and less interference information.The integrated anomalies deline-ated by principal component analysis method are representative and high coincide with the actual geological condi-tions,they have obvious indicative significance for prospecting task.