【摘要】 通过大兴安岭北部呼中地区1∶5万矿产调查中对以-10~+40目粒级段的采样介质与-10~+60目粒级段的采样介质分析结果进行对比,表明-10~+40目的采样介质能够有效圈定元素地球化学异常,并且异常的总体特征、主成矿元素的主体异常位置、形态和分带性、主体组合异常的元素组合特征均与以-10~+60目粒级段的采样介质具有总体相似性。在布置异常及异常检查工作时,-10~+40目粒级段的采样介质在森林沼泽景观区可以作为有效介质。更多还原

【Abstract】 Two sampling media of-10～+ 40 mesh and-10～+ 60 mesh,obtained from 1∶50 000 mineral survey in Huzhong,north of Daxinganling,are compared and analyzed in the paper,the result indicates that sampling medium of-10～+ 40 mesh can delineate the elemental geochemical anomaly effectively,moreover,the general characteristics of its anomaly,principal anomaly position,form and zonation of main metallogenic elements,as well as element composite characteristics of principal composite anomaly have the overall similarity with sampling medium of-10～+ 60 mesh.In work of arranging anomaly and anomaly examination,sampling medium of-10～+ 40 mesh may take as an effective medium in forest and marsh landscape area.更多还原