| GIS支持下的证据权法在胶东金矿集中区预测中的应用 |
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| 关键词:GIS EWM Jiaodong GDC mineral resource prognosis |
| 基金项目:国家重点基础研究项目（编号：G1999043207-3） |
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| 摘要: |
| Application of the Evidence Wright Method to the Prognosis of Mineral Resources in Jiaodong Gold Ore Concentration Area |
| Using the Evidence Wright Method (EWM), the authors made an analysis of Jiaodong gold deposits concentration area (GDC) on the basis of summarizing and analyzing all kinds of geo-anomalies. 13 kinds of evaluation factors, such as magmatic rock (vein) anomaly, stratigraphic anomaly, rupture and structure anomaly, and gravity and aeromagnetic anomaly, were selected for EWM analysis. The Jiaodong GDC was divided into 9 346 units by GIS at the scale of 1 km×1 km. According to the value of posterior probability, these units were in turn classified into four grades (Ⅰ-grade: 0.667～1; Ⅱ-grade: 0.405～0.667; Ⅲ-grade: (0.200～)0.405; Ⅳ-grade: 0～0.200), with Ⅰ-grade, Ⅱ-grade and Ⅲ-grade areas defined as ore potential areas. The results indicate that the EWM is effective in analyzing the Jiaodong GDC resource potentials and thus contributes to the evaluation of Jiaodong GDC resources. |
| YANG Mao-lin,LI Qing-hua,YANG Hai-wei.2005.Application of the Evidence Wright Method to the Prognosis of Mineral Resources in Jiaodong Gold Ore Concentration Area[J].Acta Geoscientica Sinica,26(5):487-491. |
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