بررسی‌ های دورسنجی و مغناطیس هوابرد در ذخایر مس پورفیری برای شناسایی مناطق با تمرکز بالای کانه‌ زایی طلا، مطالعه موردی بخش میانی کمربند دهج ساردوئیه کرمان، ایران

زمین شناسی اقتصادی

مقاله 7، دوره 10، شماره 1 - شماره پیاپی 18، 1397، صفحه 237-254   

نوع مقاله: علمی- پژوهشی

شناسه دیجیتال (DOI): 10.22067/econg.v10i1.53510

نویسندگان

مهدیه حسینجانی زاده^* ؛ مهدی هنرمند

تحصیلات تکمیلی صنعتی و فناوری پیشرفته

چکیده

هدف از این پژوهش بررسی‌های دورسنجی و مغناطیس هوابرد در ذخایر مس پورفیری برای شناسایی واحدهای دگرسانی و مناطق با تمرکز بالای کانه‌زایی طلاست. بدین‌منظور هشت اندیس با تمرکز متفاوت طلا انتخاب و مرز مطالعاتی و کانی‌های مهم دگرسانی در آنها توسط پردازش داده استر مشخص شدند. داده‌های مغناطیسی نیز با فیلترهای مختلف پردازش و بر اساس مرزهای تعیین‌شده برای هر اندیس برش‌داده شدند. در مرحله بعد مناطق بارز‌شده و تغییرات میدان مغناطیس در اطراف هر اندیس، بررسی و با یکدیگر مقایسه شدند. طبق نتایج پردازش تصاویر استر زون فیلیک در منطقه گسترش زیادی دارد و با توجه به اینکه بیشتر ذخایر فقیر از طلا با دگرسانی گسترده فیلیک همراه هستند، این امر ‌پایین‌بودن مقدار طلا در این ذخایر را تأیید می‌کند. نتایج داده مغناطیسی نیز نشان داد که تغییر در شدت میدان مغناطیسی با تغییرات طلا در اندیس‌های مورد بررسی همخوانی دارد.

کلیدواژه‌ها

داده مغناطیس هوایی؛ ذخایر مس پورفیری؛ سنجش از دور؛ طلا؛ کمربند دهج ساردوئیه کرمان

مراجع

Amer, R., Kusky, T. and Mezayen, A.E., 2012. Remote sensing detection of gold related alteration zones in Um Rus area, Central Eastern Desert of Egypt. Advances in Space Research, 49(1): 121–134.

Barzegar, H., 2007. Geology, petrology and geochemical characteristics of alteration zones within the Seridune prospect, Kerman, Iran. Ph.D. Thesis, RWTH Aachen University, Aachen, Germany, 180 pp.

Bedini, E., 2011, Mineral mapping in the Kap Simpson complex, central East Greenland, using HyMap and ASTER remote sensing data. Advances in Space Research, 47(1): 60–73.

Bishop, C.A., Liu, J.G. and Mason, P.J., 2011. Hyperspectral remote sensing for mineral exploration in Pulang, Yunnan Province, China. International Journal of Remote Sensing, 32(9): 2409–2426.

Boadi, B., Wemegah, D.D. and Preko, K., 2013. Geological and structural interpretation of the Konongo area of the Ashanti gold belt of Ghana from aeromagnetic and radiometric data. International Research Journal of Geology and Mining, 3(3): 124–135.

Boardman, J.W., 1998. Leveraging the high dimensionality of AVIRIS data for improved subpixel target unmixing and rejection of false positives: mixture tuned matched filterin. 5th JPL Geoscience Workshop, NASA Jet Propulsion Laboratory, California, United States.

Boardman, J.W., Kruse, F.A. and Green, R.O., 1995. Mapping target signatures via partial unmixing of AVIRIS data. 5th JPL airborne earth science workshop, NASA Jet Propulsion Laboratory, California, United States.

Calvin, W.M., Kratt, C. and Faulds, J.E., 2005. Infrared spectroscopy for drillhole lithology and mineralogy. Thirtieth Workshop on Geothermal Reservoir Engineering, Stanford University, California, United States.

Cox, D.P. and Singer, D.A., 1988. Distribution of gold in porphyry copper deposits. Geological Survey Bulletin, United States, Report 88–46, 26 pp.

Dimitrijevic, M., 1973. Geology of Kerman region. Geological Survey of Iran, Tehran, Iran, Report 52, 334 pp.

Dimitrijevic, M.D., Dimitrijevic, M.N. and Djordjevic, M., 1971a. Geological map of Shahre Babak, 1:100000. Geological Survey of Iran. Tehran, Iran.

Dimitrijevic, M.D, Dimitrijevic, M.N., Djordjevic, M. and Vulovic, D., 1973. Geological map of Pariz, 1:100000. Geological Survey of Iran, Tehran, Iran.

Dimitrijevic, M.D, Djordjevic, M. and Petrovic, Z., 1971b. Geological map of Robat, scale: 1:100000. Geological Survey of Iran, Tehran, Iran.

Dimitrijevic, M.N., Cvetic, S. and Dimitrijevic, M.D., 1972. Geological map of Anar, scale: 1:100000. Geological Survey of Iran, Tehran, Iran.

Djokvoic, I., Cvetic, S. and Dimitrijevic, M.D., 1973. Geological map of Dehaj, scale: 1:100000. Geological Survey of Iran, Tehran, Iran.

ENVI User Guide., 2003. ENVI Software Package Version. 4.5. Reaserach System incorporation, United States, 1084 pp.

Gabr, S., Ghulam, A. and Kusky, T., 2010. Detecting areas of high-potential gold mineralization using ASTER data. Ore Geology Reviews, 38(1–2): 59–69.

Galvao, L.S., Filho R.A. and Vitorello, C., 2005. Spectral discrimination of hydrothermal altered materials using ASTER Short wave infrared bands: Evalation in a tropical Savannah Environment. International Journal of Applied Earth Observation and Geoinformation, 7(2): 107–114.

Ganiyu, S.A., Badmus, B.S., Awoyemi, M.O., Akinyemi, O.D. and Olurin, O.T., 2013. Upward Continuation and Reduction to Pole Process on Aeromagnetic Data of Ibadan Area, South-Western Nigeria. Earth Science Research, 2(1): 66–73.

Guilbert, J.M. and Lowell, J.D., 1974. Variations in zoning patterns in porphyry ore deposits. Canadian Mining and Metallurgical Bulletin (Canadian Institute of Mining and Metallurgy) Montreal, 76(742): 99–109.

Henderson, J.R., Stromquist, J.R.A. and Jespersen, A., 1966. Aeromagnetic map of parts of the Mother Lode gold and Sierra foothills copper mining districts, California, and its geologic interpretation. Department of' the interior United States Geological Survey, Washington. D.C., map GP-561, 4 PP.

Honarmand, M., Ranjbar, H. and Moezifar, Z., 2004. Integration and analysis of Airborne geophysical and remote sensing data of Sar Cheshmeh area, using directed principal component analysis. Exploration and Mining Geology, 11(1–4): 43–48.

Honarmand, M., Ranjbar, H. and Shahabpour, J., 2012. Application of Principal Component Analysis and Spectral Angle Mapper in the Mapping of Hydrothermal Alteration in the Jebal–Barez Area, Southeastern Iran. Resource Geology, 62(2): 119–139.

Hosseinjani Zadeh, M., 2008. Comparison of advanced spectral processing of ASTER data in discrimination of alteration zones and lithological units, a case study from Sarduiyeh geological map 1:100000, Kerman, SE Iran. M.Sc. Thesis, Shiraz University, Shiraz, Iran, 188 pp.

Hosseinjani Zadeh, M., 2013. Evaluating relationship between alteration and mineralization using spectral analysis and processing of multispectral and hyperspectral data, a case study from central part of Dehaj-Sarduiyeh belt, Kerman province, SE Iran. Ph.D. Thesis, Shiraz University, Shiraz, Iran, 236 pp.

Hosseinjani Zadeh, M. and Tangestani, M.H., 2011. Mapping alteration minerals using sub-pixel unmixing of ASTER data in the Sarduiyeh area, SE Kerman, Iran. International Journal of Digital Earth, 4(6): 487–504.

Hosseinjani Zadeh, M., Tangestani, M.H., Roldan, F.V. and Yusta, I., 2014a. Sub-pixel mineral mapping of a porphyry copper belt using EO-1 Hyperion data. Advances in Space Research, 53(3): 440–451.

Hosseinjani Zadeh, M., Tangestani, M.H., Velasco Roldan, F. and Yusta, I., 2014b. Spectral characteristics of minerals in alteration zones associated with porphyry copper deposits in the middle part of Kerman copper belt, SE Iran. Ore Geology Reviews, 62: 191–198.

Hosseinjani Zadeh, M., Tangestani, M.H., Velasco Roldan, F. and Yusta, I., 2014c. Mineral Exploration and Alteration Zone Mapping Using Mixture Tuned Matched Filtering Approach on ASTER Data at the Central Part of Dehaj-Sarduiyeh Copper Belt, SE Iran. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 7(1): 284–289.

Kerrich, R., Goldfarb, R., Groves, D. and Garwin, S., 2000. The geodynamics of world-class gold deposits: characteristics, space-time distribution, and origins. In: S.G. Hagemann and P.E. Brown (Editors.), Gold in 2000. Society of Economic Geologists, Incorporation. Littleton, Colorado. pp. 501–552.

Kesler, S.E., 1973. Copper, molybdenum, and gold abundances in porphyry copper deposits. Economic Geology, 68(1): 106–112.

Kesler, S.E., Chryssoulis, S.L. and Simon, G., 2002. Gold in porphyry copper deposits: its abundance and fate. Ore Geology Reviews, 21(1–2): 103–124.

Kruse, F.A., Boardman, J.W. and Huntigton, J.F., 2003. Comparison of Airborne Hyperspectral Data and EO-1 Hyperion for Mineral Mapping. IEEE Transactions on Geoscience and Remote Sensing, 41(6): 1388–1400.

Lowell, J.D., 1989. Gold mineralization in porphyry copper deposits discussed. Mining Engineering, 41(4): 227–231.

Lowell, J.D. and Guilbert, J.M., 1970. Lateral and vertical alteration-mineralization zoning in porphyry ore deposits. Economic Geology, 65(4): 373–408.

Mars, J. C., 2010. VINR-SWIR and TIR Remote Sensing of Porphyry Copper Deposits. In: D.A. John (Editor), Porphyry Copper Deposit Model. U.S. Geological Survey, Reston, Virginia, pp. 38–50.

Neawsuparp, K., Charusiri, P. and Meyers, J., 2005. New processing of airborne magnetic and electromagnetic data and interpretation for subsurface structures in the Loei area, Northeastern Thailand. Science Asia, 31(3): 283–298.

Nedimovic, R., 1973. Exploration for ore deposits in Kerman region. Geological Survey of Iran, Tehran, Iran, Report, Yu/53, 247 pp.

Qiu, F., Abdelsalam, M. and Thakka, P., 2006. Spectral analysis of ASTER data covering part of the Neoproterozoic Allaqi-Heiani suture, Southern Egypt. Journal of African Earth Sciences, 44(2):169–180.

Ranjbar, H. Hassanzadeh, H., Torabi, M. and Ilaghi, O., 2001. Integration and analysis of airborne geophysical data of the Darrehzar area, Kerman Province, Iran, using principal component analysis. Journal of Applied Geophysics, 48(1): 33–41.

Ranjbar, H., Masoumi, F. and Carranza, E.J.M., 2011. Evaluation of geophysics and spaceborne multispectral data for alteration mapping in the Sar Cheshmeh mining area, Iran. International Journal of Remote Sensing, 32(12): 3309–3327.

Ranjbar, H., Shahriari, H. and Honarmand, M., 2004. Integration of ASTER and Airborne Geophysical Data for Exploration of Copper Mineralization; A case study of Sar Cheshmeh Area. XXth ISPRS Congress, International Society for Photogrammetry and Remote Sensing (ISPRS), Istanbul, Turkey.

Shafiei, B. and Shahabpour, J., 2008. Gold distribution in porphyry copper deposits of Kerman region, Southeastern Iran. Journal of Science, Islamic Republic of Iran, 19(3): 247–260.

Shahriari, H., Honarmand, M. and Ranjbar, H., 2015. Comparison of multi-temporal ASTER images for hydrothermal alteration mapping using a fractal-aided SAM method. International Journal of Remote Sensing, 36(5): 1271–1289.

Shayestefar, M., Mohammadi, M., Rezaei, A. and Ranjbar, H., 2014. Choromit exploration using analysis of 1:50000 aeromagnetic data, Abdasht, Esfandaghe, Kerman. Journal of Engineering Geology and Environment, 24(94): 51–58. (in Persian with English abstract)

Sillitoe, R.H., 1979. Some thoughts on gold-rich porphyry copper deposits. Mineralium Deposita, 14(2): 161–174.

Silva, A.M., Pires, A.C. and McCaffery, A., 2003. Application of airborne geophysical data to mineral exploration in the uneven exposed terrains of the Rio Das Velhas greenstone belt. Revista Brasileira de Geociencias, 33(2): 17-28.

Tayebi, M.H. and Tangestani, M.H., 2015. Sub pixel mapping of alteration minerals using SOM neural network model and Hyperion data. Earth Science informatics, 8(2): 279–291.

Tayebi, M.H., Tangestani, M.H., Vincent, R.K. and Neal, D., 2014. Spectral properties and ASTER-based alteration mapping of Masahim volcano facies, SE Iran. Journal of Volcanology and Geothermal Research, 287: 40–50.

Telford, W.M., Geldart, L.P. and Sheriff, R.E., 1990. Applied Geophysics. Cambridge University Press, New Yory, USA, 770 pp.

Titley, S.R., 1978. Copper, molybdenum, and gold content of some porphyry copper systems of the southwestern and western Pacific. Economic Geology, 73(5): 977–981.

Tommaso, I.D. and Rubinstein, N., 2007. Hydrothermal alteration mapping using ASTER data in the Infiernillo porphyry deposit, Argentina. Ore Geology Reviews, 32(1-2): 275–290.

Waterman, G. and Hamilton, N., 1975. The Sarcheshme Phorphyry Copper Deposit. Economic Geology, 70(3): 568–576.

Zhang, X., Pazner, M. and Duke, N., 2007. Lithologic and mineral information extraction for gold exploration using ASTER data in the south Chocolate Mountains (California). (ISPRS) Journal of Photogrammetry and Remote Sensing, 62(4): 271–282.