Proposing the optimum locations for drilling in Saveh North-Narbaghi porphyry copper deposit on the basis of geophysical data modeling

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AHMADI REZA; Rezapour MohammadReza

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Journal: ENGINEERING GEOLOGY Year:2020 | Volume:12 | Issue:4 Page(s): 95-121

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Title

Proposing the optimum locations for drilling in Saveh North-Narbaghi porphyry copper deposit on the basis of geophysical data modeling

Author(s)

AHMADI REZA | Rezapour MohammadReza | Issue Writer Certificate

Keywords

Saveh North-Narbaghi copper depositQ1

magnetic surveyQ2

Resistivity (Rs)Q1

Induced polarization (IP)Q1

Geophysical modelingQ1

Abstract

In the present research, modeling of magnetic, resistivity (Rs) and induced polarization (IP) data of Saveh North-Narbaghi deposit has been carried out. Also 23 deep boreholes with a total depth of 2425m have been drilled scattered at the studied area. In the first step, processing sequences were applied for magnetic data to highlight the deep anomalies using the Oasis montaj. Afterward, inverse modeling of the geoelectric profiles were done using Res2dinv and the optimum location of drilling was proposed on the basis of qualitative interpretation of geophysical real sections containing chargeability, resistivity and metal factor (MF). In the following the depth variations map of geoelectric properties was plotted and interpreted for inverted data in four depths of 10, 25, 43 and 78 meters. Afterward, to imagine the spatial variations of the electrical properties of the region and proposing the most appropriate location for drilling operation, the quasi three-dimensional solid model of Rs, IP and MF variations of the deposit after the smoothness inversion was mapped using Rockworks. Plotting ore deposit cross-section along the geophysical profiles using the assay data from the boreholes, revealed that drilling of some boreholes located on the profiles and independent of the results of geophysical operation, has been carried out without any right logic, purpose and design with no ore body. Also the qualitative accordance of the results of geoelectrical operations with the assay data from boreholes having ore body, located on the geophysical profiles, showed in general a moderate qualitative accordance between these data.

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APA: Copy

AHMADI, REZA, & Rezapour, MohammadReza. (2020). Proposing the optimum locations for drilling in Saveh North-Narbaghi porphyry copper deposit on the basis of geophysical data modeling. ENGINEERING GEOLOGY, 12(4 ), 95-121. SID. https://sid.ir/paper/380480/en

Vancouver: Copy

AHMADI REZA, Rezapour MohammadReza. Proposing the optimum locations for drilling in Saveh North-Narbaghi porphyry copper deposit on the basis of geophysical data modeling. ENGINEERING GEOLOGY[Internet]. 2020;12(4 ):95-121. Available from: https://sid.ir/paper/380480/en

IEEE: Copy

REZA AHMADI, and MohammadReza Rezapour, “Proposing the optimum locations for drilling in Saveh North-Narbaghi porphyry copper deposit on the basis of geophysical data modeling,” ENGINEERING GEOLOGY, vol. 12, no. 4 , pp. 95–121, 2020, [Online]. Available: https://sid.ir/paper/380480/en

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