内蒙古某地区1∶5万化探数据的含量-面积分形异常特征及找矿预测

Content-area fractal dimension characteristics of 1:50 000 geochemical survey data and prospecting potentials of one area in Inner Mongolia

以内蒙古某地区金铜矿产资源预测为研究对象,采用R型因子分析研究元素组合特征,提取5个代表性因子,绘制因子得分等值线图。应用含量-面积分形法确定地球化学异常下限,圈定异常,并结合元素组合特征和成矿地质特征,圈出达拉布盖、哈尔木腾、柳葫芦沟—大麦里沟、梁根—牛头沟—其勒格、树龙沟—麦子井5处找矿远景区。异常查证结果表明:梁根—牛头沟目前已发现3条工业矿体,为有利的金铜找矿靶区;其勒格发现5处金矿化信息,成矿地质条件良好,为下一步重点找矿地段。

The paper takes the prediction of gold and copper resources in one area in Inner Mongolia as the research subject,extracts 5 representative factors with R factor for the analysis of element combination features,and maps the factor score contour diagram. The content-area fractal dimension method is applied to determine the bottom level of geochemical anomalies and delineate anomalies,and associating the element combination features and metallogenic geological features,to delineate Dalabugai,Haermuteng,Liuhulugou- Damailigou,Lianggen- Niutougou- Qilege,Shulonggou- Maizijing as prospecting areas of prospects. Anomaly investigation results show that Lianggen- Niutougou sees 3 industrial orebodies,making it a favorable target area for gold and copper prospecting; Qilege sees 5 spots with gold mineralization information,making it an important prospecting area.