甘肃夏河—合作一带成矿预测及预测方法比较

以成矿系统理论为指导,通过提取甘肃夏河—合作一带与成矿有关的地层、岩体以及断裂等成矿有利证据图层,基于证据权法、找矿信息量以及最大熵模型方法进行成矿预测。成矿系统理论为从不同尺度选取成矿要素提供了理论依据,为进一步的数据驱动成矿预测奠定了基础。最大熵模型法作为广泛应用于成矿潜力分布的方法,通过与证据权法、找矿信息量法的预测结果对比以及ROC曲线分析,表明其在矿产资源预测中同样具有应用潜力。

Metallogenic prediction and prediction method comparison in Xiahe-Hezuo area, Gansu Province

Guided by the theory of metallogenic system, this paper extracts evidence layers of favorable strata, favorable rock mass and fractures related to mineralization in the Xiahe-Hezuo area to make metallogenic prediction based on evidence weight, prospecting information and maximum entropy model. The theory of metallogenic system provides a theoretical basis for selecting ore-forming elements from different scales, and lays a foundation for further data-driven ore prediction. As widely used in the distribution of ore-forming potential, the maximum entropy model, by comparison with the evidence weight method, the prediction results of the prospecting information method and the ROC analysis, shows that it also has great potential in the prediction of mineral resources.