上黑龙江成矿带基于证据权重法的金矿综合信息成矿预测

随着地质找矿工作程度的不断深入,地质找矿工作的难度越来越大,综合信息成矿预测和GIS技术在矿产预测和评价上得到了较好的应用。上黑龙江成矿带位于大兴安岭北部,近年来区内已发现多个金矿床,找矿潜力较大。在收集和综合解译物化遥资料的基础上,结合区内金矿床(点)分布和主要矿床地质特征,分别提取地层、构造、化探、重力、航磁、遥感等成矿有利信息,并利用MRAS系统中的证据权重法对研究区找矿远景做出预测。通过预测共圈出17个金矿成矿远景区,为上黑龙江成矿带进一步找矿勘查部署工作提供了参考依据。

Multi-source information metallogenic prognosis based on evidence weight methodin upper Heilongjiang metallogenic belt

With the progress of geological prospecting work and the exploration of surface deposits becoming increasingly difficult,comprehensive information metallogenic prognosis and GIS have been introduced to mineral prospecting and evaluation.With prospecting potential,Upper Heilongjiang area is located in the north of Great Khingan Mountains where several gold deposits have been found.Combining the collected regional digital data and characteristics of typical gold deposits,the study selects stratum,structures,geochemical anomalies,gravitational data,aeromagnetic data and RS data as the prospecting criteria and use MRAS (weight of evidence) for prediction.17 prospecting areas have been delineated based on the prediction.The results can be used as reference to deploy further work.