Interpretation of geophysical (IP/RS) and geological data of Gonharan lead and zinc exploration area (east of Daran city- Isfahan province

Authors

1 PhD Student: Faculty of Basic Sciences, Economic Geology, Mahallat Branch, Islamic Azad University, Mahallat, Iran

2 Associate Professor: Department of Geology, Khorramabad Baranch, Islamic Azad University, Khorramabad, Iran

3 Assistant Professor: Agricultural Research, Education and Extension Organization, Khorramabad, Iran

4 Atin Madan Media Co., Isfahan, Iran

5 Department of Geology, Mahallat Branch, Islamic Azad University, Mahallat, Iran

Abstract

The Pb and Zn range of Gonharan is in the carbonate part of Sanandaj-Sirjan zone, with early Cretaceous massif limestone host rock. Mineralization is mainly associated with dolomitic-siliceous alteration. The mineralized dolomitized sections are mostly related to reverse fault zones and have a trend approximately parallel to reverse faults and fracture surfaces. The mineralization of the mineral material is in the form of scattered grains, veins, empty space filling and patches. Minerals include lead, zinc, and sometimes copper, which are in the form of galena, sphalerite, pyrite, chalcopyrite, cerusite, calcite, and silica. Collecting the data of inductance and specific resistance has been designed and carried out first in the form of a rectangular arrangement in order to determine the abnormal ranges and then using a dipole-dipole arrangement in order to explore the lateral and deep points of these anomalies. Also, the data modeling of induction and specific resistance was done by two-dimensional smooth inversion method, and to better display the results, all two-dimensional sections were combined and a three-dimensional model was presented. The studied area is divided into two parts, and the total points collected in the two areas by induction polarization method and apparent specific resistance are 3313 stations, and finally, 45 points are suggested for drilling in the two areas.

Keywords

References

آقانباتی، س، ع.، 1383. زمین‌شناسی ایران، انتشارات سازمان زمین‌شناسی کشور، تهران، ایران.
پی‌جویی به روش اکتشاف ژئوشیمیایی با مقیاس 1:25000 در محور گنهران-عسگران، شرکت مشاور توسعه علوم زمین، پژوهشکده سازمان زمین‌شناسی و اکتشافات معدنی کشور.
قاسمی، ع.، حاج‌حسینی، ف.، ابوالفضل، و محمد حسینی 1385. نقشه
 
 
 
 
زمین‌شناسی 1:100000چادگان، سازمان زمین‌شناسی و اکتشافات معدنی کشور.
ناکینی، ع.، محجل، م. و یارمحمدی، ع.، 1394، الگوی چین خوردگی و نقش آن در جایگاه ماده معدنی در معادن انجیره-وجین، تیران، باختر اصفهان. فصلنامه علوم زمین، سال24، شماره 95، ص 231-242.
مصطفایی،ک.نوروزی،غ. عسکری، م.ص. شیوا،م. (1389). " تحلیل آماری و مدل سازی داده های ژئوفیزیکی  RS و IP اندیس معدنی همیچ"، اولین همایش انجمن زمین شناسی اقتصادی ایران، دانتشگاه فردوسی مشهد، شهریور 1389.
 
 
Agard, P., Omrani, J., Jolivet, L. and Mouthereau, F., 2005. Convergence history across Zagros, Iran: Constraints from collisional and earlier deformation. International Journal of Earth Sciences, 94(3), 401*419
 
Alavi, M., 1994, Tectonics of the Zagros orogenic belt of Iran: new data and interpretations” , Tectonophysics, 229, 211-238.
 
Esmaeili, Sevieri, A., Karimpour, M.H., Malekzadeh
Shafaroudi, A. and Mahboubi, A., 2019. Knowledge-driven Approach to Exploration of Carbonate Hosted Zinc and Lead Deposits, Case study: North Irankuh district, Isfahan – Iran. Journal of Economic Geology, 11(4): 565–602. (in Persian with English abstract)
 
 
Ehya, F., Lotfi, M. and Rasa, I., 2010. Emarat carbonate-hosted Zn–Pb deposit, Markazi Province, Iran: A geological, mineralogical and isotopic (S, Pb) study. Journal of Asian Earth Sciences, 37(2), 186-194
 
Ghasemi, A. and Talbot, C., 2006. A new tectonic scenario for the Sanandaj–Sirjan Zone (Iran). Journal of Asian Earth Science, 26(6), 683-693.
 
Hou, Z. and Zhang, H., 2015. Geodynamics and formation of Irankuh-Emarat Pb-Zn MVT belt,Central Iran” by Mohammad Hassan Karimpour and Martiya Sadeghi. Journal of Geochemical Exploration, 205(1), 106346.
Karimpour, M.H. and Sadeghi, M., 2018. Dehydration of hot oceanic slab at depth 30-50km: KEY to formation of Irankuh-Emarat PbZn MVT belt, Central Iran. Journal of Geochemical Exploration, 194(1), 88-103.
 
Karimpour, M.H., Malekzadeh Shafaroudi,  A.,Alaminia, Z., Esmaeili Sevieri, A. and Stern, C.R., 2019. New hypothesis on time and thermal gradient of subducted slab with emphasis on dolomitic and shale host rocks in formation of Pb-Zn deposits of Irankuh Ahangaran belt. Journal of Economic Geology, 10(2), 677-706. (In Persian with English abstract).
 
Mohajjel, M. and Fergusson, C.L., 2014. Jurassic to Cenozoic tectonics of the Zagros Orogen in northwestern Iran. International GeologyReview, 56(3), 263-278.
 
Mohajjel,M., Fergusson, C.L., Sahandi, M.R., 2003. Cretaceous-Tertiary convergence and continental collision, Sanandaj-Sirjan zone, Western Iran.J . Aaian Journal of Earth Science, 21, 397-412.
 
Nadimi, A., Konon, A., 2012, Strike slip faulting in the central part of the Sanandaj-Sirjan Zone, Zagros Orogen, Iran. Journal of Structural Geology. NW Iran, Arabian Journal of Geosciences, 2015, 8263-8275.
 
Niroomand, S., Haghi, A., Rajabi, A., Tabbakh Shabani, A.A. and Song, U.C., 2019. Geology, isotope geochemistry, and fluid inclusion investigation of the Robat Zn-Pb-Ba deposit, Malayer-Esfahan metallogenic belt, southwestern Iran. Ore Geology Review, 112(1), 103040.
 
Telford,   W.  Geldart  L.   &  Sheriff  R., 1990. An Introduction to Applied Geophysics”, American Mineralogist, 95, 185-187.
 
 
Tilman, J.E., Poosti, A.,  Rossello,  S.,  A.,  1981. Structural evilution of Sanandaj-Sirjan Ranges near Esfahan, Iran. Am. Assoc. Pet. Geol. Bull. 65, 674-687.
 
Willocks. A. j.,  Moore.  D.  H., 1999. Geology and geophysical exploration of base metals in Victoria, geology survey of victoria report 119. Australian Society of Exploration Geophysics special.Publicatin, 11, 1-22
 
Zhou, B., 1992, Discussion on: "The use of Hartley transform in geophysical applications", R. Saatcilar, S. Ergintav, and N. Canitez, authors, Geophysics, 57, 196–197.
Volume 11, Issue 2
September 2025
Pages 77-92

Files

Share

How to cite

Statistics