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Application of feldespar and hornblende composition to investigate the nature and thermobarometry aftabrou pluton, northwest uroumieh-dokhtar magmatic belt, Iran

Research Paper | June 1, 2015

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Akram Sabzian, Fariborz Masoudi, Hoshang Asadi Harooni, Mohammad Hashem Emami, Nima Nezafaty

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J. Bio. Env. Sci.6( 6), 609-620, June 2015


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The Aftabrou pluton, situated in the Northwest of Saveh, is a small part of the Uroumieh-Dokhtar magmatic arc of Iran in the Alpine-Himalayan orogenic belt. The arc outcrops are mainly consisted of Tertiary volcanic sequences and associated plutonic rocks typical of calc-alkaline magmatism developed at active continental margins. The arc was developed during the closure of the Neotethyan ocean between Arabia and Eurasia. This pluton is consisted of plutonic (granodiorite) and sub- plutonic (diorite) rocks, intruded into the Eocene volcanic rocks. The main minerals are plagioclase, amphibole, alkali feldspar and magnetite. In this study, composition of minerals is used to describe the nature of the granitic magma and to estimate the pressure and temperature at which Aftabrou pluton is emplaced. The chemistry of amphibole in plutonic rocks and that of clinopyroxe inclusion in plagioclase of sub- plutonic rocks show that this pluton is derived from a calc-alkalin magma. This type of magma is typically produced in the subduction environments. It means that the pluton could have formed in an orogenic suit in the subduction zone. The results obtained from amphibole and clinopyroxen chemistry are well consistent with the previous suggestions on the Uroumieh-Dokhtar belt. The average of emplacement temperatures calculated by the hornblende-plagioclase thermometer for granodiorites and dioritesare 625.5°C and 597.9°C, respectively. Aluminum-in-hornblende geobarometry indicate that the emplacement pressures for sub- plutonic and plutonic rocks of Aftabrou pluton are 1.18–0.14 Kbar and 0.08- .05 Kbar, respectively.


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Application of feldespar and hornblende composition to investigate the nature and thermobarometry aftabrou pluton, northwest uroumieh-dokhtar magmatic belt, Iran

Alavi M. 1994. Tectonic of Zagros orogenic belt of Iran: New data and interpretations. Tectonophysics 229, 211-238.

Amini Haroni I. 2014. Mineralogy and geochem-istry of the Aftabrupoly metal prospect, Markazi Province. (MSc Thesis), Geology Department, Isfahan University, Isfahan, Iran (127 pp. in Persian).

Anderson JL. 1996. The Nature and Origin of Cordilleran Magmatism. Geological Society of America, Memoir 174, 71-98.

Anderson, JL, Smith DR. 1995. The effects of temperature and fO2 on the Al-in-hornblende barometer. Am. Mineral 80, 549–559.

Barbarin B. 1990. Granitoids: main petrogenetic classification in relation to origin and tectonic setting. Geological Journal 25, 227-238.

Barbarin B. 1999. A review of the relationships between granitoid types, their origins and their geodynamic environments. Lithos 46, 605-626.

Blundy JD, Holland TJB. 1990. Calcic amphibole equilibria and a new amphibole-plagioclase geotherm-ometer. Contrib mineral petrol 104, 24- 208. 24.

Chappell BW, White AJR. 1974. Two Contrasting Granite Types. Pacific Geology 8, 173-174.

Chavideh M, Kananian A, Ahmadian J, Sarjoughian F. 2013. 1stcoference on Iranian applied geochemistry (CIAG), Damghan university.

Coltoriti M, Bonadiman C, Faccini B, Gregori M, O’reilly SY, Powell W. 2007. Amphiboles from suprasubduction and intraplate lithospheric mantle. Lithos 99, 68–84.

Emami MH. 2000. Magmatism in Iran. published by the Geological Survey and Mineral Exploration Iran.

Ernst WG. 2002 Paragenesis and thermobarometry of Caamphiboles in the Barcroftgranodioritic pluton, central White Mountains, eastern California .Am. Mineral 87, 478-490.

Femenias OC, Mercier JC, NKono C, Diot H, Berza T, Tatu M, Demaiffe D. 2006. Calcic amphibole growth and compositions in calc-alkaline magmas: Evidence from the Motru Dike Swarm (Southern Carpathians, Romania). American amaineralogist Journal 91, 73- 81.

Ghasemi A, TalbotC J. 2005. A new tectonic scenario for the Sanandaj- Sirjan Zone (Iran). Journal of Asian Earth Science 26(6), 683-693.

Hammarstrom JM, Zen EAN. 1986. Aluminum in hornblende: An empirical igneous geobarometer, American Mineralogist 71, 1297- 1313.

Helz RT. 1982. Phase relations and compositions of amphiboles produced in studies of the melting behavior of rocks, Mineralogical Society of America Reviews in Mineralogy 9B, 279-346.

Holland T, Blundy J. 1994. Non-ideal interactions in calcic amphiboles and their bearing on amphibole-plagioclase thermometry. Contrib Mineral Petrol 116, 433-447.

Hollister LS, Grissom GC, Peters EK, Stowell HH, Sisson VB. 1987. Confirmation of the empirical correlation of Al in hornblende with pressure of solidification of calc-alkaline plutons. Am. Mineral 72, 231-239.

Jakes P, White AJR. 1972. Major and trace element abundances in volcanic rocks of orogenic areas, Geological Society of America Bulltein 83, 29-40.

Jiang CY, An SY. 1984. On chemical characteristics of calcic amphiboles from igneous rocks and their petrogenesis significance. J. Mineral. Petrol 3, 1–9.

John BE, Wooden J. 1990. Petrology and geochemistry of the metaluminous to peraluminous Chemehuevi Mountains Plutonic suite, southeastern California.

Johnson MC, Rutherford MJ. 1989. Experimental calibration of the aluminum-in-hornblende geobarometer with application to Long Valley Caldera (California) volcanic rocks. Geology 17, 837-841.

Kaya O. 1978. Paleozoic basement structure of northwest Anatolia (an approach). In: ZAPFE, H. (ed), Scientific Results of the Austrian Projects of the International Geological Correlation Programme (IGCP), SterreichischeAkademie der Wissenschaften Schriften der ErdwissenschaftlichenKommissionen Band. 3, 223- 234.

Khlili M, Kuorangi M. 2001. Investigation of geology, petrology, petrography and geochemistry of plutonics mass of south and south and north- western of Zafarghand. Thesis of Ph. D.

Leake BE, Woolly AR, Arps CES, BirchWD, Gilbert MC, Grice JD, Hawthorne FC, Kato A, Kisch HJ, Krivovichev VG, Linthout K, Laird J, Mandarino J, Maresch WV, Nickel Eh, Rock NMS, Schmucher JC, Smith DC, Stephenson NCN, Unungaretti L, Whittaker EJW, Youzhi G. 1997. Nomenclature of Amphiboles. Report of the Subcommittee on Amphiboles of the International Mineralogical Association Commission on New Minerals Names. Europian Journal of Mineralogy 9, 623-651.

LeBas NJ. 1962. The role of aluminium in igneousclinopyroxenes with relation to their parentage. Am. J. Sci 260, 267-88.

Leterrier J, Maury RC, Thonon P, Girard D, Marehal M. 1982. Clinopyroxene composition as a method of identification of the magmaticaffinities of paleo-volcanic series. Earth. Planet. Sci. Lett 59, 139-54.

Lundgaard KL, Tegner C. 2004. Partitioning offerric and ferrous iron between plagioclase and silicate melt. Contributions to Mineralogy and Petrology 147, 470- 483.

Mc Causland PJA, Symons DTA, Hart CJR, Blackburn WH. 2001. Paleomagnetism and geobarometryofthe Granite Mountain batholith, Yukon: Minimalgeotectonic motion of the Yukon-Tanana Terranerelativeto North America. Yukon Exploration and Geology, 163- 177.

Moazzen M, Droop GTR. 2005. Application of mineralthermometers and barometers to granitoid igneous rocks:theEtive Complex, W Scotland. Mineral Petrol 83, 27- 53.

Mohajjel M, Fergusson CL. 2000. Dextral transpression inLate Cretaceous contatinetal collision, Sanandaj-SirjanZone, western Iran. Journal of Structural Geology 22, 1125-1139.

Morimoto N, Fabries J, Ferguson AK, Ginzburg IV, Ross M, Seifert FA, Zussman J, Aoki K, Gottardi G. 1988. Nomenclature of pyroxenes. Mineral Petrol 39, 55–76.

Petro WL, Vogel TA, Wilband JT. 1979. Major-elementchemistry of plutonic rock suites from compressional andextensional plate boundaries. Chemical Geology 26, 217- 235.

Rutter MJ, Van der Laan SR, Wyllie PJ. 1989. Experimental data for a proposed empirical igneousgeobarometer: Aluminium in hornblende at 10 kbar pressure. Geology 17, 897-900.

Sabzian A, Masoudi F, Emami MH, Nezafati N. 2015. The study of dual entity of alkaline – calcalkaline magma origin in plutonic rocks in Aftabrou area, North West of Saveh, Arak. Journal of Biodiversity and Environmental Science (JBES) 6(6), 428- 437.

Schmidt MW. 1992. Amphibole composition in tonalite as afunction of pressure: An experimental calibration of theAl-in-hornblende barometer. Contrib Mineral Petrol 110, 304-310.

Sun CM, Bertrand J. 1991. Geochemistry of clinopyroxenes in plutonic and volcanic sequences from the Yanbian Proterozoic ophiolites (Sichuan Province, China) Petrogenetic and geotectonicimplications. Schweizerische Mineralo-gischeund Petrographische Mitteilungen 71, 59- 243.

Thomas WM, Ernst WG. 1990. The aluminium content ofhornblende in calc-alkaline granitic rocks: A mineralogicbarometer calibrated experimentally to 12kbar: In:Spencer RJ , Chou IM (Eds.), Fluid-mineralinteractions: A tribute to HP Eugster, The GeochemicalSociety Special Publication 2, 59-63.

Vyhnal CR, Mc Sween HY, JR. 1990. Constraints on Alleghanian vertical displacements in the southern Appalachian Piedmont, based on aluminum-inhornblendebarometry. Geology, 18, 938-941.

White AJR, Chappell BW. 1983. Granitoid types andtheir distribution in the Lachlan Fold Belt, southeastern Australia. In: Roddick JA (Ed.) Circum-Pacific Plutonic Terranes. Geological Society of America, Memoi 159, 21-34.

Zareie T, Kananian A, Sarjoughian F, Ahmadian J. 2013. Chemistry of minerals and stimate of tempreture and pressure of Kiabdioritic mass, north- western of Ghom. 1stcoference on Iranian applied geochemistry (CIAG), Damghan university.