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سنگ شناسی، زمین شیمی و جایگاه زمین ساختی بازالت های بوژان، شمال شرق نیشابور | ||
زمین شناسی اقتصادی | ||
مقاله 5، دوره 14، شماره 2 - شماره پیاپی 33، 1401، صفحه 93-113 اصل مقاله (1.89 M) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22067/econg.2021.52120.88571 | ||
نویسندگان | ||
حمید حافظی مقدس1؛ سید مسعود همام* 2 | ||
1کارشناسی ارشد، گروه زمینشناسی، دانشکده علوم، دانشگاه فردوسی مشهد، مشهد، ایران | ||
2دانشیار، گروه زمینشناسی، دانشکده علوم، دانشگاه فردوسی مشهد، مشهد، ایران | ||
چکیده | ||
منطقه بوژان در شمالشرق ایران و در 22 کیلومتری شمالشرق نیشابور واقعشده است. این محدوده شامل برونزدهایی از واحدهای رسوبی پالئوزوئیک (سیلت، کنگلومرا، آهک ماسهای) و سنگهای آتشفشانی بازالت، آندزیتی بازالتی، آندزیت، تراکیت و آذرآواری (سیلورین) است. بافت غالب واحدهای آتشفشانی پورفیری، گلومروپورفیری و جریانی بوده و شامل کانیهای اصلی پلاژیوکلاز، پیروکسن و به مقدار کم الیوین و کانی فرعی آپاتیت هستند. بازالتهای بوژان سرشت آلکالن با گرایش سدیک دارند. این سنگها دارای ویژگیهای بازالتهای درون صفحهای (مانند نبود آنومالی منفی عناصر Nb، P و Ti و دارا بودن روند کاهشی در نمودار چند عنصری بهنجارشده به ترکیب گوشته اولیه) هستند. همچنین بر اساس نمودارهای گوناگون برای محیط زمینساختی، در محدوده بازالتهای درون صفحهای قرار میگیرند. ماگمای اولیه بر اساس نسبتهای Nb/Zr، Ce/Zr، La/Zr و Rb/Zr شواهدی از آغشتگی پوستهای نشان نمیدهد. سنگهای بوژان در طول چرخهای از کافت درون قاره در هنگام باز شدگی پالئوتتیس در اردویسین تا سیلورین شکل گرفتهاند. | ||
کلیدواژهها | ||
کانی شناسی؛ زمین شیمی؛ بازالت؛ آلکالن؛ بوژان؛ بینالود | ||
مراجع | ||
Aghanabati, S.A., 2004. Geology of Iran. Geological Survey and Mining Exploration of Iran, Tehran. 586p. (in Persian) Alavi, M., 1991. Sedimentary and structural characteristics of the Paleo-Tethys remnants in northeastern Iran. Geological Society of America Bulletin, 103(8): 983–992. https://doi.org/10.1130/0016-7606(1991)103<0983:SASCOT>2.3.CO;2 Ayati, F., Khalili M., Noghreiyan M. and Mackizadeh, M.A., 2011. Silurian magmatism in the Abyaneh area (Kashan-Central Iran). Journal of Science 35 (4): 21–31. (in Persian) Retrieved July 01, 2021 from https://www.magiran.com/p794211 Baharifar, A.A., Mazaheri, S.A. and Moein-Vaziri, N., 2005. Deformation and its relationship with the crystallization of metamorphic minerals in Dehno area (Mashhad-Khorasan). 9th symposium of Geological society of Iran, Tarbiat Moalem University of Tehran, Tehran, Iran. (in Persian) Retrieved July 01, 2021 from https://www.en.symposia.ir/SGSI09 Boynton, W.V., 1984. Cosmochemistry of the rare earth elements; meteorite studies. In: P. Henderson (Editor) the rare earth element geochemistry. Elsevier, Amsterdam, pp. 115–1522. https://doi.org/10.1016/B978-0-444-42148-7.50008-3 Dai, HK., Zheng, J.P., Xiong, Q., Su, Y.P., Pan, SK., Ping, X.Q. and Zhou, X., 2018a. Fertile lithospheric mantle underlying ancient continental crust beneath the northwestern north China craton: significant effect from the southward subduction of the Paleo–Asian Ocean. Journal of Geological Society of America Bulletin, 131: 3–20. https://doi.org/10.1130/B31871.1 Dai, L.Q., Zheng, F., Zhao, Z.F. and Zheng, Y.F., 2018b. Geochemical insights into the lithology of mantle sources for Cenozoic alkali basalts in West Qinling, China. Lithos, 302-303: 86–98. https://doi.org/10.1016/j.lithos.2017.12.013 Derakhshi, M. and Ghasemi, H., 2015. Soltan Maidan Complex (SMC) in the eastern Alborz structural zone, northern Iran: magmatic evidence for Paleotethys development. Arabian Journal of Geosciences, 8(2): 849–866. https://doi.org/10.1007/s12517-013-1180-2 Esmaeili, D., kananian, A. and Valizadeh, M.V., 2003. Polymorphism in the margins of Mashhad granitoids. 2th symposium of Geological society of Iran, Ferdowsi University of Mashhad, Mashhad, Iran. (in Persian) Retrieved July 01, 2021 from https://www.en.symposia.ir/SGSI02 Floyd, P.A. and Winchester, J.A., 1978. Identification and discrimination of altered and metamorphosed volcanic rocks using immobile elements, Chemical Geology, 21(3-4): 291–306. https://doi.org/10.1016/0009-2541(78)90050-5 Ghazi, A.M., Pessagno, E.A., Hassanipak, A.A., Kariminia, S.M., Duncan, R.A. and Babaie, H.A., 2003. Biostratigraphic zonation and 40Ar–39Ar ages for the Neotethyan Khoy ophiolite of NW Iran. Palaeogeography, Palaeoclimatology, Palaeoecology, 193(2): 311–323. https://doi.org/10.1016/S0031-0182(03)00234-7 Hastie, A.R., Kerr, A.C., Pearce, J.A. and Mitchell, S.F., 2007. Classification of altered volcanic island arc rocks using immobile trace elements: development of the Th-Co discrimination diagram. Petrology, 48 (12): 2341–2357. https://doi.org/10.1093/petrology/egm062 Hatefi, R., 2003. Study on metamorphic rocks and intrusive units in Dehno area (Northwest of Mashhad). M.Sc. Thesis, Tarbiat Moalem University, Tehran, Iran, 112 pp. (in Persian) Homam, M. and Ghaemi, F., 2008. The mechanism of fibrolite formation in the contact aureole of Mashhad granite. Iranian Journal of Crystallography and Mineralogy, 16(1): 159–168 (in Persian). Retrieved July 01, 2021 from https://www.sid.ir/en/journal/ViewPaper.aspx?id=112654 Karimpour, M.H., Stern, C.R. and Farmer, G.L., 2010. Zircon U–Pb geochronology, Sr–Nd isotope analyses, and petrogenetic study of the Dehnow diorite and Kuhsangi granodiorite (Paleo-Tethys), NE Iran. Journal of Asian Earth Sciences, 37(4): 384–393. https://doi.org/10.1016/j.jseaes.2009.11.001 Meschede, M., 1986. A method of discriminating between different types of mid-ocean ridge basalts and continental tholeiites with the Nb-Zr-Y diagram. Chemical Geology, 56(3–4): 207–218. https://doi.org/10.1016/0009-2541(86)90004-5 Middlemost, E.A., 1975. The basalt clan. Earth-Science Reviews, 11(4): 337-364. https://doi.org/10.1016/0012-8252(75)90039-2 Nabavi, M.H., 1976. An introduction to the geology of Iran. Geological survey of Iran, Tehran.109 pp. (in Persian) Retrieved July 01, 2021 from https://www.sid.ir/fa/journal/ViewPaper.aspx?ID=38741 Pearce, J.A., 1982. Trace element characteristics of lavas from destructive plate boundaries, Andesites. Wiley, United Kingdom, 548 pp. Retrieved July 01, 2021 from http://orca.cf.ac.uk/id/eprint/8625 Pearce, J.A., 1983. The role of sub-continental lithosphere in magma genesis at destructive plate margins. Continental basalts and mantle xenoliths. Shiva, United Kingdom, 249 pp. Retrieved July 01, 2021 from http://orca.cf.ac.uk/id/eprint/8626 Pearce, J.A. and Norry, M.J., 1979. Petrogenetic implications of Ti, Zr, Y, and Nb variations in volcanic rocks. Contributions to Mineralogy and Petrology, 69(1): 33–47. https://doi.org/10.1007/BF00375192 Pearce, T.H., Gorman, B.E. and Birkett, T.C., 1977. The relationship between major element chemistry and tectonic environment of basic and intermediate volcanic rocks. Earth and Planetary Science Letters, 36(1): 121–132. https://doi.org/10.1016/0012-821X(77)90193-5 Pour Latifi, A., 2001. Geological map of Torghabeh, Scale 1:100000. Geological Survey of Iran. Samadi. R., 2001. Investigation on the origin of garnet megacrysts in Dehno tonality, Northwest of Mashhad. M.Sc. Thesis, Tehran University, Tehran, Iran, 179 pp. (in Persian) Srivastava, R.K. and Singh, R.K., 2004. Trace element geochemistry and genesis of Precambrian sub-alkaline mafic dikes from the central Indian craton: evidence for mantle metasomatism. Journal of Asian Earth Sciences, 23(3): 373–389. https://doi.org/10.1016/S1367-9120(03)00150-0 Sun, S.S. and McDonough, W.F., 1989. Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. In: A.D. Saunders, M.J. Norry, (Editors), Magmatism in the Ocean Basins. Geological Society, London, Special Publications 42, pp. 313–345. https://doi.org/10.1144/GSL.SP.1989.042.01.19 Thompson, B.M., 1982. Growth and development of Pseudocalanus elongatus and Calanus sp. in the laboratory. Journal of the Marine Biological Association of the United Kingdom, 62(2): 359–372. https://doi.org/10.1017/S0025315400057337 Vogel, T.A., Hidalgo, P.J., Patino, L., Tefend, K.S. and Ehrlich, R., 2008. Evaluation of magma mixing and fractional crystallization using whole-rock chemical analyses: Polytopic vector analyses. Geochemistry, Geophysics, Geosystems, 9(4): 1-27. https://doi.org/10.1029/2007GC001790 Wang, H., Wu, Y.B., Gao, S., Liu, X.C., Gong, H.J., Li, Q.L., Li, X.H. and Yuan, H.L., 2011. Eclogite origin and timings in the North Qinling terrane, and their bearing on the amalgamation of the South and North China Blocks. Journal of Metamorphic Geology, 29(9): 1019–1031. https://doi.org/10.1111/j.1525-1314.2011.00955.x Whitney, D.L. and Evans, B.W., 2010. Abbreviations for names of rock-forming minerals. American Mineralogist, 95(1): 185–187. https://doi.org/10.2138/am.2010.3371 Wilson, M., 1989. Review of Igneous Petrogenesis: Aglobal Tectonic Approach. Terra Nova, 1(2): 18–222. https://doi.org/10.1111/j.1365-3121.1989.tb00357.x Winchester, J.A. and Floyd, P.A., 1977. Geochemical discrimination of different magma series and their differentiation protextures and setting of VMS mineralization in the Pilbara ducts using immobile elements. Chemistry Geology, 20: 325–344. http://dx.doi.org/10.1016/0009-2541(77)90057-2 Zhao, J.X., Shiraishi, K., Ellis, D.J. and Sheraton, J.W., 1995. Geochemical and isotopic studies of syenites from the Yamato Mountains, East Antarctica: implications for the origin of syenitic magmas. Geochimica et Cosmochimica Acta, 59(7): 1363–1382. https://doi.org/10.1016/0016-7037(95)00050-A Zhu, D., Pan, G., Mo, X., Liao, Z., Jiang, X., Wang, L. and Zhao, Z., 2007. Petrogenesis of volcanic rocks in the Sangxiu Formation, central segment of Tethyan Himalaya: A probable example of plume–lithosphere interaction. Journal of Asian Earth Sciences, 29 (2–3): 320–335. https://doi.org/10.1016/j.jseaes.2005.12.004
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