Comparison of Dighem EM and Magnetic Results for Detecting Epithermal And Shear Zone gold Deposits

Abstract

High resolution Dighem data over broad areas have been found to optimize exploration for gold deposits in different geological environments. Dighem, simultaneously investigate four different data include EM data with five frequency, magnetic susceptibility, gamma ray spectrum for radio elements and altitude. These data have been provided for some part of Iran by Fugro Corporation in early years for exploring mineral deposits. Because of the small flight line spacing at the case study region, Alut, the magnetic data are interpreted for mineral and structural exploration by the output of Model Vision and Quik Mag programs. Furthermore the HEM data are processed by Emflow and Siemon algorithms for producing sections. Then the results of Magnetic and electromagnetic data are discussed and compared with each other in order to define the exact anomaly place(s) for two different kind of gold deposits with respect to prior information like geological information. We try this for discussing the ability of HEM data and its inversion algorithms for detecting the small veins of mesothermal gold deposits.