Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

Determination of mineralization zones using interpretation of SIP and Resistivity Data in Tappeh Sorkh Area, Iran-kuh

Document Type : Original Research Paper

Authors
1 Shahrood University of Technology, Shahrood , Iran
2 Isfahan University of Technology, Isfahan , Iran
Abstract
Accessibility to industrial minerals and ores is one of the necessities to faciliate the development. Meanwhile, it is clear that the shallow mineral resources are near to exhaust, therefore, using modern exploration methods to attain deeper mineral deposits is inevitable. An attampt has been made in this paper to apply and accomplish the results of geological and surface geochemical studies for determination of spatial mineralized zones in western area of Tappeh Sorkh lead - zinc mine (which is one of Bama mining complex mines).
IP and Resistivity techniques are the most popular geophysical methods for exploration of Pb and Zn sulfide deposits. There are some advantages in applying SIP method, such as identification of mineralization texture, grain structure, type of material, ore phase and parasitical data. In this study, a relatively new method of time domain SIP was used and apparent time constant, apparent frequency -dependent and true chargeability parameters were extracted. By using the results of time constant parameter, the average of metal grain size was determined, also the amount of metal grain dispersion (mineralization texture) was determined by applying the results of frequancy dependent parameter. Probable mineralization places were determined by using SIP sections. Since the results of raw data do not indicate accurate information about the depth and geometry of mineralization, smooth and parametric inverse modeling were applied to determine probable zones and vertical and horizontal extent of mineralization.
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Rastad, E., 1981- Geological mineralogical and ore facieses investigations on the lower cretaceous strata band Zn, Pb, (Ba , Cu) deposits on the irankuh mountain range, Isfahan west central Iran, Ph.D. Thesis,.
Burnol, L., 1968 - Contribution a L'etude des gisments de plumb et zinc L'Iran essais de classification paragenetique, Geological survey of Iran, Report No 11.
 Luo, Z.Z., Zang, G., 1998- Theory and application of Spectral Induced Polarization, Geophysical monograph series, No.8, SEG publication.
Ward, S.H., 1990- Investigations in geophysics Geotechnical and environmental geophysics, No.5, SEG publication.
Yungul, S. H., 1996-Electrical methods in geophysics exploration of deep sedimentary basins, 1st edition, Chapman Hall.
Telford, W. M., Geldart, L. P., Sheriff, R. E., , 1990- Applied geophysics, 2nd editions, Cambridge University Press.
Marquardt, D.W., 1963- "An algorithm for least-squares estimation of nonlinear parameters", J. Soc. Indust. Appi. Math., Vol.11, no.2.
Loke, M.H., Barker, R.D., 1996-"Rapid least-squares inversion of apparent resistivity pseudo sections by a quasi- Newton method", Geophysical prospecting, No.44, pp. 131 – 152.
Pelton, W.H., Ward, S.H., Hallof, P.G., Sill, W.R., Nelson, P.H., 1978- "Mineral discrimination and removal of Induced Polarization Coupling with multi frequency IP.", Geophysics, Vol.43, No.3, pp. 588-609.
Hohmann, G.W., , 1975- "3-D Induced Polarization EM modeling", Geophysics, Vol.40, pp. 309 - 324.
Johnson, I.M., . 1993 - 2003, 1984 -"Spectral Induced Polarization parameters as determined through Time-domain measurements", Geophysics, Vol.49, No.11, pp.
Tombs, J.M.C., 1981- "The feasibility of Spectral Induced Polarization measurements in the Time-domain", Geo exploration, Vol.19, pp. 91 - 102.
Horel, A.E., Kennard, R.W., 1970b -"Ridge regression: Application to non orthogonal problems", Tachnometrics, No.12, pp. 69 – 82.
Apparrao, A., 1997-Developments in geo electrical methods, National geophysical research institute, Hyderabad, A. A. Balkama. Pub.