利用MorPAS对上黑龙江成矿带进行金成矿预测

上黑龙江成矿带主要由早-中侏罗世河流-湖泊-洪积相含煤碎屑岩组成，目前已发现多个中小型矿床，在该区进行成矿预测意义重大。文章利用MORPAS成矿预测系统，采用证据权重法进行了成矿预测工作，在充分研究区内已知矿床的成矿规律基础上，以1：257Y地质图为背景，物化探异常分析子系统对1：20万区域化探数据进行C—A分形确定异常下限，综合现有的找矿标志，提取有利的成矿要素，进行针对处理，制成上黑龙江成矿带MORPAS金成矿预测分析图，提供成矿靶区，为森林高覆盖区提供找矿有利单元。

Using MorPAS to Conduct the Gold Mineralization Forecast in the Metallogenic Belt Upstream of Heilongjiang

The metallogenic belt upstream of Heilongjiang is mainly composed by Early - Middle Jurassic Riverslakes - with coal-bearing alluvial clastic, where a number of small and medium-sized deposits were found, and it is very significant to have the mineralization forecast in this region. Using the system of metallogenic prediction MorPas and Weights of Evidence, this paper has made the metallogenic prediction work. Based on the study on metallogenic regularity in the known deposits area, the anomalies analyzer of geophysical and geochemical subsystem has conducted C-A fractal over the geochemical data to determine the abnormal limit within 1：200,000 regions amid the geological map of 1：250,000 in this document; the favorable metallogenic elements were extracted for targeted treatment with comprehensive existing prospecting criteria; it is a way to produce an gold mineralization forecast analysis chart of MORPAS in the metallogenic belt upstream of Heilongjiang, and provides a mineralization target and a good unit for finding the mineral deposits within the high forest coverage area.