甲玛-驱龙矿集区地球化学异常识别方法研究

Geochemical anomalies are the key to exploration of geochemical research. To describe geochemical anomalies, the statistical and spatial characteristics of geochemical data need to be fully considered.The Spectrum-Area (S-A) fractal model can effectively decompose complex geochemical anomaly patterns and handle complex nonlinear relationships in geochemical data.This paper use S-A model and catchment basin to identify geochemical anomalies and assess resource potential in Jiama-Qulong ore field.The S-A model is used to discriminate the geochemical anomalies from the background, and combinations of elements reflecting the metallogenic correlation are extracted by cluster analysis. On the previous basis, combining with the catchment basin to further define the regional anomaly. Determine the anomalous spatial distribution pattern and lock in the source of the anomalous space.The results indicate that the single element, element combination and comprehensive abnormality extracted by various methods are clearly indicated in Jiama and Qulong deposits.In particular, the Jiama deposit not only has anomalies of medium and low temperature elements, but also anomalies of medium and high temperature elements, which is worthy of further research.