نوع مقاله : علمی-پژوهشی
نویسندگان
1 دانشجوی دکتری، گروه مهندسی معدن، دانشگاه کاشان، کاشان
2 استادیار، گروه مهندسی معدن، دانشگاه کاشان، کاشان
3 دانشیار، دانشکده مهندسی معدن، نفت و ژئوفیزیک، دانشگاه شاهرود، شاهرود
4 استادیار، دانشکده مهندسی معدن، نفت و ژئوفیزیک، دانشگاه شاهرود، شاهرود
5 استادیار، دانشکده مهندسی معدن، دانشگاه صنعتی اصفهان، اصفهان
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In exploratory projects, the identification of geochemical anomalies in different areas may become complicated under the influence of geological processes. To solve these ambiguities, different methods should be used for a correct understanding of the available information. In this research, by expressing the concept of hierarchical clustering to identify elements related to mineralization, singularity, and how to draw singularity maps in the form of multifractal models and support vector machine method, the anomalous areas where there is a possibility of mineralization are seprated from the context regions. At first, two elements, gold and copper, were identified as elements related to mineralization in the created clusters using the hierarchical clustering method and Ward's method. To calculate the singularity index of these two elements, the method based on the window and the power relation of grade area was used at each point. Finally, by separating the singularity index values into two parts, training and testing, and with the help of the SVM method, the process of classification and estimation of singularity index values was done to identify anomalous areas for unknown areas. A case study has been carried out on the data of the porphyry copper deposit rich in Dali gold with an area of 900×800 meters located in the Urmia-Dokhtar magmatic belt. The data is related to surface soil samples in the target area. The results of this method are consistent with the previous studies conducted in the region. The results of the hybrid method used in this research show good agreement with previous studies. As a result, the use of these introduced hybrid methods can be a suitable guide for the production of geochemical maps in unknown areas.
کلیدواژهها [English]