| 赵志伟,刘锐,蔺鹏飞,郭永强,丁园,孙国胜.基于MORPAS的敖汉旗林家地金多金属成矿远景区预测[J].矿产勘查,2022,13(6):785-796 |
| 基于MORPAS的敖汉旗林家地金多金属成矿远景区预测 |
| The prediction of gold and other polymetallic metallogenic prospective area in the Linjiadi area of Aohanqi based on MORPAS |
| 投稿时间：2021-11-25 |
| DOI：10.20008/j.kckc.202206009 |
| 中文关键词: MORPAS 证据权法 C-A分形理论 成矿远景区 |
| 英文关键词: MORPAS weights of evidence method C-A fractal theory metallogenic prospective area |
| 基金项目:本文受内蒙古敖汉旗白土营子地区铀-多金属矿调查评价(202013-2)资助。 |
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| 中文摘要: |
| 随着GIS技术实现多源地学信息的集成、分析以及融合,使得对于成矿远景区的定量化预测成为可能。本文在系统总结内蒙古敖汉旗林家地地区的地质条件以及区域成矿规律的基础上,利用GIS空间分析、主成分分析、聚类分析以及C-A分形理论等提取了包括地质、地球物理异常、地球化探异常以及遥感蚀变异常等在内的13个证据因子,并基于MORPAS平台应用证据权法成功建立了内蒙古敖汉旗林家地地区综合信息找矿模型,在此基础上成功圈定了15个I级成矿远景区和17个II级成矿远景区,同时对各成矿远景区结合实际地质情况进行了分析和评价。结果表明:内蒙古敖汉旗林家地地区已知金矿点大部分都落入圈定成矿远景区内,证明了该方法的合理性和可靠性。预测结果可为该区域的下一步找矿工作提供一定的技术支持和科学依据。 |
| 英文摘要: |
| With the integration, analysis and fusion of multi-source information by GIS technology, it is possible to predict the metallogenic prospective area quantitatively. In this paper, the GIS spatial analysis, principal component analysis, clustering analysis and C-A fractal theory are employed to extract the 13 factors, including evidence including geology, geophysical anomaly, geochemical anomaly, remote sensing alteration and other factors, based on systematically summarizing the Linjiadi area of Aohanqi, Inner Mongolia regional geological conditions and regional metallogenic regularity. On the basis of MORPAS, the comprehensive information prospecting model of Linjiadi area of Aohanqi, Inner Mongolia has been successfully built by using the weight of evidence method and 15 grade I metallogenic prospective areas and 17 grade II metallogenic prospective areas have been delineated successfully, and the actual geological conditions of each metallogenic prospective area have been analyzed and evaluated. The results show that most of known gold deposits in the Linjiadi area of Aohanqi, Inner Mongolia fall into the delineated metallogenic prospective area, which proves the rationality and reliability of this method. The prediction results can provide some technical support and scientific basis for the next prospecting work in this area. |
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