Document Type : Original Research Paper
Authors
1 M.Sc., Department of Geology, Khoram Abad Branch, Islamic Azad University, Khoram Abad, Iran
2 Assistant Professor, Department of Geology, Khoram Abad Branch, Islamic Azad University, Khoram Abad, Iran
3 Associate Profesor, Department of Mining Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
4 Assistant Professor, Watershed Management Research Department, Lorestan Agricultural and Education Center Soil Conservation Khoram Abad, Iran
5 M.Sc., Geological Survey of Iran, Tehran, Iran
Abstract
Collected geochemical data from stream sediments, can be used in regional exploration and identifying anomalies in reconnaissance stages. In this research in order to regional exploration studies, multifractal modeling approaches include concentration-area and concentration-number has been used and geochemical anomalies for index elements (As,Sb,Au and Cu) has examined. 855 of stream sediment samples were collected The Alut 1:100,000 sheet and analyzed by ICP-MS method in the laboratory of Geological Survey of Iran (GSI). Then, statistical parameters and histograms were performed on the elements. Then, using fractal methods concentration-area and concentration-number, related anomalies in this sheet has prepared and anomaly maps were drawn. Respect to the Geological setting, existing structures and predominant lithology the results of two methods (concentration - area and concentration – number) has compared in the area. The results of the two methods showed that concentration of these elements has increased in central and southeast regions and formed promising areas. Although concentration-number method due to more extensive geochemical halo included well-known deposits (Barika mine) and also accommodate expected mineralization in Sanandaj - Sirjan zone.
Keywords