نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشکده علوم‌زمین، دانشگاه شهید بهشتی، تهران، ایران.
2 پژوهشکده علوم زمین، سازمان زمین‌شناسی و اکتشافات معدنی کشور، تهران. ایران.
چکیده
توالی آتشفشانی منطقه ارزوییه با سن ژوراسیک بالایی- کرتاسه زیرین در پهنه ساختاری سنندج- سیرجان جنوبی قرار گرفته است. ژئوشیمی عناصر اصلی و کمیاب، تحولات ماگمایی را از گرایش تحولی به سمت کلسیمی- قلیایی نشان می‌دهند. ترکیب شیمیایی کلینوپیروکسن‌ها مشابه با ترکیب این کانی در مناطق فرورانش است و از یک ناحیه مرتبط با کمان آتشفشانی منشأ گرفته است. نمودارهای عناصر کمیاب و خاکی کمیاب الگوهای غنی‌شدگی را در LREEها نسبت به HREEها و تهی‌شدگی را در عناصر Nb و Ta نشان می‌دهند. این توالی ماگمایی از یک منشأ گوشته‌ای با تأثیر سیال‌ها و رسوبات حاصل از ورقه فرورانش تشکیل یافته است. توالی آتشفشانی منطقه ارزوییه احتمالا" در نتیجه فرورانش سنگ‌کره اقیانوس نئوتتیس به زیر پهنه سنندج- سیرجان، از زمان ژوراسیک بالایی تا کرتاسه زیرین، در محیط کمان آتشفشانی تشکیل یافته‌اند.
کلیدواژه‌ها
References
Agard, P., Omrani, J., Jolivet, L. & Mouthereau, F., 2005- Convergence history across Zagros (Iran): constraints from collisional and earlier deformation, Int. J. Earth Sci, 94: 401-419.
Allen, M. B., Jackson, J. & Walker, R., 2004- Late Cenozoic reorganization of the Arabia-Eurasia collision and the comparison of short-term and long-term deformation rates, Tectonics, 23: 1-16.
Alric, G. & Virlogeux, D., 1977- Pétrographie et géochimie des roches métamorphiques et magmatiques de la région de Deh Bid-Bavanat, Chaîne de Sanandaj-Sirjan, Iran. Thèse 3éme cycle, université scientifique et médicale de Grenoble, France, 316 pp.
Azizan, H. & Naderi, N., 2006- Geological map of the Dolatabad, Scale 1/100,000. Geological Survey of Iran, Sheet No. 7346.
Azizan, H. & Nazemzadeh, M., 2006- Geological map of the Orzuieh (Dashtvar), Scale 1/100,000. Geological Survey of Iran, Sheet No. 7246.
Azizi, H. & Jahangiri, A., 2008- Cretaceous subduction-related volcanism in the northern Sanandaj-Sirjan Zone, Iran. Journal of Geodynamics, 45: 178-190.
Babaie, H. A., Ghazi, A. M., Babaei, A., La Tour, T. E. & Hassanipak, A. A., 2001- Geochemistry of arc volcanic rocks of the Zagros Crush Zone, Neyriz, Iran. Journal of Asian Earth Science, 19: 61-76.
Beccaluva, L., Macciotta, G., Piccardo, G. B. & Zeda, O., 1989- Clinopyroxene compositions of ophiolite basalts as petrogenetic indicator. Chemical Geology, 77: 165-182.
Berberian, F. & Berberian, M., 1981- Tectono-plutonic episodes in Iran. In: Gupta, H.K. & Delany, F.M. (eds.) Zagros, Hindukosh, Himalaya geodynamic evolution. American Geophysical Union Washington, 5-32 pp.
Berberian, M. & King, G. C. P., 1981- Towards a paleogeography and tectonic evolution of Iran. Can. J. Earth Sciences, 18: 210-265.
Berberian, M. & Nogol, M., 1974- Preliminary explanation text of the geology of Deh Sard and Khabr maps with some remarks on the metamorphic complexes and the tectonics of the area (two geological maps, 1/100000 from the Hajiabad quadrangle map). Geological Survey of Iran. internal report, 60 pp.
Braud, J., 1978- Geological map of Kermanshah 1/250000 scale. Geological Survey of Iran.
Cabanis, B. & Lecolle, M., 1989 - Le diagramme La/10-Y/15-Nb/8: un outil pour la discrimination des series volcaniques et la mise en evidence des processus de melange et/ou de contamination crustale. C.R. Acad. Sci., 309: 2023-2029.
Davoudzadeh, M., Soffel, H. & Schmidt, K., 1981- On the rotation of the Central-East Iran microplate. N. Jb. Geol. Palaont. Mh., 3: 180-192.
Deer, W. A., Howie, R. A. & Zussman, J., 1991- An introduction to the rock-forming minerals, Longman Scientific Technical, New York, 528 pp.
Dewey, J. F., Pitman, W. C., Ryan, W. B. F. & Bonnin, J., 1973- Plate tectonics and the evolution of the Alpine system. Geological Society of America Bulletin, 84: 3137-3180.
Dimitrijevic, M. D., 1973- Geology of Kerman. Geological Survey of Iran, No. 72.
Forster, H., 1976 - Continental drift in Iran in relation to the Afar structures. In: Pilger, A. & Rosler, A., (eds.). Afar between continental and oceanic rifting (VII). Schweizerbatsche Varlagsbuchhandlung, Stuttgart, 182-190 pp.
Hawkins, J. W. & Allan, J. F., 1994- Petrologic evolution of Lau Basin sites 834 through 839. In: Hawkins, J.W. & Parson, L.M. & Allan, J.F., et al. (eds.). Proceedings of the Ocean Drilling Program, Scientific Results. 135, College Station, Texas, 427-470 pp.
Hout, F., Hebert, R., Varfalvy, V., Beaudoin, G., Wang, C. S., Liu, Z. F., Cotten, J. & Dostal, J., 2002- The Beimarang melange (southern Tibet) brings additional constraints in assessing the origin, metamorphic evolution and obduction processes of the Yarlung Zangbo ophiolite. Journal of Asian Earth Sciences, 21: 307-322.
Jackson, J., Hains, J. & Holt, W., 1995 - The accommodation of Arabia-Eurasia plate. Journal of Geophysical Research, 100: 15,205-15,219.
Kuno, 1968 - Differentiation of basaltic magma. In Hess, H.H., et Poldervaart, A., edit, Basalts, 2: 623-688.
Le Bas, M. J., Le Maitre, R. W., Streckeisen, A. & Zanettin, B., 1986- A chemical classification of volcanic rocks based on the total alkali-silica diagram, Journal 0f Petrology. 27: 745-750.
Leterrier, J., Maury, R. C., Thonon, P., Girard, D. & Marchal, M., 1982- Clinopyroxene composition as a method of identification of the magmatic affinities of paleo-volcanic series. Earth and Planetary Science Letter, 59: 139-154.
Moritimo, N., Fabries, J., Ferguson, A. K., Ginzburg, I. V., Ross, M., Seifert, F. A., Zussman, J., Akoi, K. & Gottardi, G., 1988- Nomenclature of pyroxenes. Mineralogical Magazine, 52, 535-550.
Nazemzadeh, M. & Rashidi, A., 2006- Geological map of the Dehsard (Bezar), Scale 1/100,000. Geological Survey of Iran, Sheet No. 7347.
Nazemzadeh, M., Roshanravan, J. & Azizan, H., 1996- Geological map of the Khabr, Scale 1/100,000. Geological Survey of Iran, Sheet No. 7247.
Omrani, J., Agard, P., Whitechurch, H., Benoit, M., Prouteau, G. & Jolivet, L., 2008- Arc-magmatism and subduction history beneath Zagros: New report of adakites and geodynamic consequences. Lithos, 106: 380-398.
Peccerillo, A. & Taylor, S. R., 1976- Geochemistry of Eocene calc-alkaline volcanic rocks from the Kastamonu area, northern Turkey. Contribution to Mineralogy and Petrology, 58: 63-81.
Sabzehei, M., 1994- Geological map of the Hajiabad, Scale 1/250,000. Geological Survey of Iran, Quadrangle No. 112.
Sengor, A. M. C., 1979- Mid - Mesozoic closure of Permo - Triassic Tethys and its implications. Nature, 279: 590-593.
Stakes, D. S. & Franklin, J. M., 1994- Petrology of igneous rocks at Middle Valley, Juan de Fuca Ridge. In: Mottl, M.J. & Davis, E.E. & Fisher, A.T., et al. (Eds.). Proceedings of the Ocean Drilling Program, Scientific Results. 139, College Station, Texas, 79-102 pp.
Stocklin, J., 1968- Structural history and tectonics of Iran: a review. A.A.P.G. Bull, 52: (7) 1229-1258.
Stocklin, J., 1974 - Possible ancient continental margins in Iran. In: Burk, C.A. & Drake, C.L. (Eds.). The geology of continental margins. Springer, Berlin, 873-887 pp.
Stocklin, J., 1977- Structural correlation of the Alpine range between Iran and Central Asia. Memoire Hors-Serve No.8 dela Societe Geologique de France, 8: 333-353.
Sun, S. S. & McDonough, W. F., 1989- Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. In: Saunders, A.D. 7 Norry, M.J. (eds.). Magmatism in Ocean Basins. Geol. Soc. Spec. Publ. London, 313–345 pp.
Taraz, H., 1974- Geology of the Surmaq-Deh Bid area, Abadeh region, Central Iran. Geological Survey of Iran, 37: 148 pp.
Van der Laan, S. R., Arculus, R. J., Pearce, J. A. & Murton, B. J., 1992- Petrography, mineral chemistry, and phase relations of the basement boninite series of site 786, Izu-Bonin forearc. In: Fryer, P., Pearce, J.A. & Stokking, L.B., et al. (Eds.). Proceedings of the Ocean Drilling Program, Scientific Results, 125, College Station, Texas, 171-201pp.
Wood, D. A., 1980- The application of a Th-Hf-Ta diagram to problems of tectonomagmatic classification and to establishing the nature of crustal contamination of basaltic lavas of the British Tertiary Volcanic Province, Earth and Planetary Science Letters, 50: 11-30.
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