TN776 : Modeling and interpretation of induced polarization,Acquision Isfahan,And resistivity for copper exploration in Ardestan area Province
Thesis > Central Library of Shahrood University > Mining, Petroleum & Geophysics Engineering > MSc > 2017
Authors:
Sajad Radsar [Author], Ali Reza Arab-Amiri[Supervisor], Abolghasem Kamkar Rouhani[Supervisor], Hasan Riahi [Advisor]
Abstarct: One of the most important steps in exploration is target zone identification. Induced polarization (IP) and resistivity methods are two of the most proper methods for prospecting and exploration of sulfide minerals. The main mineral in the study area is copper, which exists as sulfide or oxide minerals. The ultimate goal of this research is to determine the mineralization zones by inverse modeling of IP and resistivity data. According to mineralization in the exploration area in Ardestan area. first, we carried out IP and resistivity surveys using rectangule array, and then in order to study prospect zones in contour maps , four dipole-dipole lines with 20 meters electrode spacing were designed and then ,the IP and resistivity data were collected and analyzed to study the probable anomalies in depth. In order to obtain true chargeability and resistivity the subsurface structures and interpreting the results, two-dimensional (2D) IP and resistivity values and to determine sections from Res2dinv and ZondRes2d were software packages used in this study. To obtain the best subsurface mineralization, three-dimentional (3D) sections had been prepared by Res3dinv software. In the end, results from modeling were visualized via voxler. Typical lithological and mineralization trends are extended from northwest toward southeast. Mineralization has been taken place in andesite rocks and then, altered rocks which in most places showed high chargeability and even moderate to high resistivity. By comparing the contour maps of rectangle array and 2D and 3D sections, the mineralization zones were determined. Finally, two points for exploration drilling were proposed.
Keywords:
#Induced polarization (IP) #Resistivity #Inversion modeling #Rectangule array #Dipole-dipole array #Ardestan Link
Keeping place: Central Library of Shahrood University
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