Study of the source and geothermobarometry of Shah Jahan granodiorite and granite plutons: by using unstable isotope data, dating and geochemistry

Abstract

The Shah Jahan Granodiorite and granite rocks are part of the Ordubad granitoid body that outcrop in 10 km south of Aras River. These rocks are located in the Alborz-Azerbaijan zone in NW of Iran. The Granodiorite Pluton has granular texture; containing minerals are plagioclase (andesine), alkali feldspar (orthoclase), amphibole (magnesio-hornblende) biotite, titanite and magnetite. Alkali feldspar minerals in granodiorite pluton are less than granite pluton. The Initial rate of 87Sr / 86Sr =0.704486 in granodiorite and 87Sr / 86Sr =0.704432 in granites rocks and positive εNd value indicate to mantle origin and subduction-related area. The emplacement age of these rocks is related to the Eocene based on Ar-Ar by biotite minerals. Base on mineral chemistry of biotite, amphibole and whole rock geochemistry: these plutons are meta-aluminous, I-type granites and related to calc-alkaline magma series. Negative Nb and Ti anomalies in normalized graphs can be shown subduction-related zones. P-T replacement of the granodiorite rocks are estimated of 1.08 to 1.91 Kbar and 753 to 777 °C.

Keywords


[1] Hassanpour Sh., Alirezaei S., Selby D., Sergeev S., "SHRIMP zircon U-Pb and biotite and hornblende Ar-Ar geochronology of Sungun, Haftcheshmeh, Kighal, and Niaz porphyry Cu-Mo systems: evidence for an early Miocene porphyry-style mineralization in northwest Iran", International journal of earth sciences 104 (2015) 45-59.

[2] حسن پور ش.، "متالوژی کانسارهای مس پورفیری و طلای اپی ترمال در زون ارسباران (شمال غرب کشور)"، پایان نامه دکتری، دانشکده علوم زمین، دانشگاه شهید بهشتی (1389).

[3] Castro A., Aghazadeh M., Badrzadeh Z., Chichorro M., "Late Eocene–Oligocene post-collisional monzonitic intrusions from the Alborz magmatic belt, NW Iran. An example of monzonite magma generation from a metasomatized mantle source", Lithos 180–181 (2013) 109–127.

[4] مهرپرتو م.، امامی م.ه.، میرزائی م. ، و علائی س.،" نقشه زمین شناسی 100000/1 سیه رود"؛ سازمان زمین شناسی و اکتشافات معدنی کشور (1376).

[5] Azizi H., Jahangiri A., "Cretaceous subduction-related volcanismin the north- ern Sanandaj-Sirjan Zone, Iran", Journal of Geodynamics 45 (2008) 178–190.

[6] Azizi H., Moinevaziri H., "Review of the tectonic setting of Cretaceous to Quaternary volcanism in northwestern Iran", Journal of Geodynamics 47 (2009) 167–179.

[7] Abdel-Rahman A., "Nature of Biotites from Alkaline, Calc-alkaline, and Peraluminous Magmas", Journal of petrology 35 (1994) 525-541.

[8] Coltorti M., Bondaiman C., Faccini B., Grégoire M., O’Reilly S.Y., Powell W., "Amphiboles from suprasubduction and intraplate lithospheric mantle", Lithos 99 (2007) 68-84.

[9] Anderson J.L., Smith D.R., "The effects of temperature and fO2 on the Al-in-hornblende barometer", American Journal of Science 80 (1995) 549-559.

[10] Hammarstrom J.M., Zen E., "Aluminum in hornblende: An empirical igneous geobarometer", American Journal of Science 71 (1986) 1297-1313.

[11] Holland T., Blundy J., "Non-ideal interactions in calcic amphiboles and their bearing on amphibole-plagioclase thermometry", Contributions to Mineralogy and Petrology 116 (1994) 433-447.

[12] Johnson M.C., Rutherford M.J.,"Experimental calibration of the aluminum-in-hornblende geobarometer with application to Long Valley Caldera (California) volcanic rocks", Geology 17 (1989) 837-841.

[13] Schmidt M.W., "Amphibole composition in tonalite as a function of pressure: An experimental calibration of the Al-in-hornblende barometer", Contributions to Mineralogy and Petrology 110 (1992) 304-310.

[14] Stein E., Dietl C., "Hornblende thermobarometry of granitoids from the Central Odenwald (Germany) and their implications for the geotectonic development of the Odenwald", Mineralogy and Petrology 72 (2001) 185-207.

[15] Thomas W.M., Ernst W.G., "The aluminium content of hornblende in calc-alkaline granitic rocks: A mineralogic barometer calibrated experimentally to 12kbar: In: Spencer R.J. and Chou I.M (Eds.), Fluid-mineral interactions: A tribute to HP Eugster", The Geochemical Society Special Publication 2 (1990) 59–63.

[16] Uchida E., Endo S., Makino M., "Relationship between Solidification Depth of Granitic Rocks and Formation of Hydrothermal Ore Deposits", Resource Geology 57 (2007) 47–56.

[17] اسماعیلی د.، طباخ شعبانی ا. ع.، نجار ح.، رضایی م.، "استفاده از شیمی کانی آمفیبول در بررسی ویژگی های اگمایی و سازنده و زمین دما-فشارسنجی توده های گرانیتوئیدی شمال غرب ساوه، ایران مرکزی"، مجله بلورشناسی و کانی‌شناسی ایران، شماره 21 (1392) ص 417-430.

[18] طهماسبی ز.، خلیلی م.، احمدی خلجی ا.، مکی زاده م.، "مقایسه انواع آمفیبول ها و ژئوترموبارومتری توده نفوذی آستانه (زون سنندج-سیرجان)"، مجله بلورشناسی و کانی‌شناسی ایران، شماره 17 (1388) ص 279-290.

[19] قدمی غ.، مرادیان شهر بابکی ع.، مرتضوی س. م.، "زمین دا-فشارسنجی و کانی شناسی توده های نفوذی اسیدی الیگو-میوسن شمال غرب شهر بابک، کرمان"، مجله بلورشناسی و کانی شناسی ایران، شماره 22 (1393) ص 543-556.

[20] Leake B.E., "On aluminous and edenitc amphiboles", Mineralogical Magazine 38 (1971) 389–407.

[21] Deer W. A., Howie A., Sussman J., "An interdiction to rock- forming minerals", 17th. Longman Ltd (1986) 528p.

[22] Hamilton P.J., Evensen N.M., O'Nions R.K., Smith H.S., and Erlank A.J., "Sm-Nd dating of Onverwach group volcanics, southern Africa", Nature 279 (1979) 28-300.

[23] Shafiei B., Haschke M., Shahabpour J., "Recycling of orogenic arc crust triggers porphyry Cu mineralization in Kerman Cenozoic arc rocks, southeastern Iran", Mineralium Deposita 44 (2009) 265–283.

[24] Liotard J.M., Dautria J.M., Bosch D., Condomines M., Mehdizadeh H., Ritz J.-F., "Origin of the absarokite–banakite association of the Damavand volcano (Iran): trace elements and Sr, Nd, Pb isotope constraints", International Journal of Earth Sciences 97 (2008) 89–102.

[25] Aghazadeh M., Castro A., Omran N.R., Emami M.H., Moinvaziri H., Badrzadeh Z., "The gabbro (shoshonitic)–monzonite–granodiorite association of Khankandi pluton, Alborz Mountains, NW Iran", Journal of Asian Earth Sciences 38 (2010) 199–219.

[26] Boynton W.V., "Consmochemistry of the rare earth elements meteorite stud-ies. In: Henderson, P. (Ed.), Rare Earth Element Geochemistry", Elsevier Sciences, Amsterdam (1984) 63–114.

[27] Thompso R.N., "Magmatism of the British Tertiary volcanic province", Scottish Journal of Geology 18 (1982) 9–107.

[28] Chappell B.W., White A.J.R., "I- and S-type granites in the Lachlan fold belt. Transactions of the Royal Society of Edinburgh", Earth Sciences 83 (1992) 1–26.

[29] Cox K g., Bell J. D., Pakhurst R. J., "The interpretation of igneous rocks Allen and unwin", London (1979) 450p.

[30] De La Roche h., Leterrier J., Grandclaude P., Marchal M., "A classification of volcanic and plutonic rocks using R1-R2 diagrams and major element analyses, its relationship and current nomenclature", Chemical Geology 29 (1980) 183-210.

[31] Barker F., "Teronhjamite definition, environment and hypotheses of origin, in Teronhjamites, dacites and related rocks", edited by F Barker., Elsevier Science Publication Amsterdam (1979) 1-12.

[32] Maniar P.D., Piccoli P.M., "Tectonic discrimination of granitoids", Geological Society of American Bulletin 101 (1989) 635–643.

[33] Le Maitre R.W., Bateman P., Dubek A., Keller J., Lameyre J., Le Bas M.J., Sabine P.A., Schmid R., Sّrensen H., Streckeisen A., Woolley A.R., Zanettin B., "A classification of igneous rocks and glossary of terms. Recommendations of the International :union: of Geological Sciences Subcommission on the Systematics of Igneous Rocks", Blackwell, Oxford (1989) 193.

[34] Irvine T.N., Baragar W.R.A., "Aguide to the chemical classification of the common volcanic rocks". Canadian Journal of Earth Sciences 8 (1971) 523-548.

[35] Pearce J.A., Harris N.B.W., Tindle A.G., "Trace element discrimination diagrams for the tectonic interpretation of granitic rocks", Journal of Petrology 25 (1984) 956–983.