Study of mineral chemistry, geothermobarometry and tectonic setting of gabbroic rocks from north-west Hamedan, Iran
Subject Areas :عادل ساکی 1 , Hooshang Pourkaseb 2 , Alireza Zarasvandi 3 , Milad Jahani 4 , Maryam Dorani 5
1 -
2 -
3 - Department of Geology, Faculty of Earth Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
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5 -
Keywords: Mineral chemistryAmphibole GeothermobarometryTectonic seeting Gabbro Hamedan,
Abstract :
The study area is geologically located in the northern area of the Sanandaj-Sirjan metamorphic zone. Based on petrographic study, the main minerals consists of plagioclase, pyroxene, amphibole and biotite and the accessory minerals are chlorite, muscovite, ilmenite and zircon. The obtained results from the mineral chemistry in this study indicate that the amphiboles are calcic amphiboles, and in terms of chemical composition they can be called pargasit, tschermakite and magnesiohomblende. Plagioclases are also andesian. Due to the low Na2O content, it can be concluded, that tectonically these amphiboles are of S-Amph type and are related to the subduction zones. Based on the high levels of Al2O3, the origin of amphiboles is mantle-type. Therefore, due to the ratio of Fetot (Fetot + Mg+2) to AlIv, which is less than 0.6, the oxygen fugacity was high. On the other hand, the water levels vary from 2 to 2.3 for hornblende crystallization. Different methods were used to perform thermobarometry, the best of which showed that the formation temperature of gabbroic mass has been in the range of 700°C (in average) and a pressure of 4.45- 7.52 Kb. According to the estimated pressures, the magma was originated at a depth of 25-30 Km, which is near the Moho discontinuity.
اشراقی، ص.، 1381. نقشة زمین‌شناسی 1:100000 ورقه تویسرکان. سازمان زمین‌شناسی و اکتشافات معدنی کشور.
ایزدی کیان، ل.، محجل، م. و علوی، س.، 1393. مراحل دگرریختی در سنگ¬های دگرگونی منطقه همدان و ارتباط آنها با توده نفوذی الوند؛ فصلنامه علوم زمین سازمان زمین¬شناسی و اکتشافات معدنی کشور، 187-197.
Abdel-Rahman, A.M., 1994. Nature of biotites from alkaline, and peraluminous magmas, journal of petrology, 35, 525-541.
Agrad, PH., Omrani, J., Jolivent, L. and Mouthereau, F., 2005. Convergence history across zagros (iran): constraints from collisional and earlier deformation international journal of earth sciences, 94,3, 401-419.
Alavi, M., 1994. Tectonics of the Zagros orogenic belt of Iran: new data and interpretations, Tectonophysics, 229, 211–238.
Albuquerque, C.A.R., 1973. Geochemistry of biotites from granitic rocks, Northern Portugal.Geochimica et Cosmochimica Acta, 37, 1779-1802.
Anderson, J. L., 1996. Status of thermobarometry in granitic batholiths: Transactions of the Royal Society of Edinburgh, 87, 125-138. [also published in GSA Special Paper 315]
Anderson, J. L. and Smith, D. R., 1995.The effect of temperature and oxygen fugacity on Al-in-hornblende barometry, AM Mineral, 80, 549-59.
Ayati, F., Kalimi Noghreyan, M. and Khalili, M. 2012. Petrographic and mineral-chemistry of the magmatic-alteration zones south of Salafchegan. Petrology 2,8: 1-20 (in Persian).
Berberian, M. and King, G., 1981.Toward a paleogeography and tectonic evolution of Iran, Canadian Journal of Earth Science, 18, 210–265.
Blundy, J.D. and Holland., T.J.B., 1990.Calcic amphibole equilibria and a new amphibole-plagioclase geothermometer, Contrib Mineral Petrol, 104, 208-24.
Blundy, J.D., and Holland, T.J.B., 1990. calcic amphibole equilibria and a new amphibole-plagioclase geothermometer, Contribution to mineralogy and petrology, 104, 208-224.
Botcharnikov, R.E., Koepke, J., Holtz, F., McCammon, C. and Wilke, M., 2005.The effect of water activity on the oxidation and structural state of Fe in a ferro-basaltic melt. Geochim. Cosmochim, Acta 69, 5071–5085.
Brunet, M.F., Wilmsen, M. and Granath, J.W., 2009. South Caspian to Central Iran Basins. Geological Society, London, SpecialPublications, 312.
Coltorti.M, B.C., Faccini. B., Grégoire, M., O’Reilly, S.Y. and Powell. W., 2007. Amphiboles from suprasubduction and intraplate lithospheric mantle, Lithos 99, 68-84.
Deer, W.A., howie, R.A., Zussman, J.,1991. An introduction to the rock forming minerals, longman scientific and technical, 528.
Eugester, H.P. and Wones, D.MR., 1963 .Stability Relations of the Ferruginous Biotite, Annite. Journal of Petrology, 3,1, 82-125.
Foster, M.D., 1960. Interpretation of the composition of trioctahedralmicas, united states geological survey professional paper, 354-b, 11-49.
Ghalamghash, J., Mirnejad, H. and Rashid, H 2009. Mixing and Migening of mafic and felsic magmasa long the Neo – Thetys continental margin, sanandaj – sirjan zone, NW Iran: A case study from the Alvand pluton, N. Jb. Miner. Abh, 186.
Ghasemi, A. and Talbot, C.J., 2005. A new tectonic scenario for the Sanandaj.Sirjan Zone (Iran), Journal of Asian Earth Sciences, 26, 683- 693.
Hammarstrom J.M. and Zen E-An., 1989. Aluminum inhornblende: An empirical igneous geobarometer”,Am.Mineral, 71, 1297-1313.
Holister, L.S., Grisson, G.C., Peters, E.K., Stowell, H.H. and Sisson, V.B., 1987. Confirmation of the empirical correlation of Al in hornblende with pressure of solidification of calc-alkaline plutons, Am. Mineral, 72, 231-239.
Holland, T. and Blundy, J., 1994. Non-ideal interactions in calcic amphiboles and their bearing on amphibole-plagioclase thermometry, Contrib Mineral Petrol, 116, 433-47.
James, S., and Beard, A., 1986. Characteristic mineralogy of arc-related cumulate gabbros: Implications for the tectonic setting of gabbroic plutons and for andesite genesis, Geology, Geological Society of America.
Johnson, M.C. and Rutherford, M.J., 1989. Experimental calibration of an aluminum-in-hornblende geobarometer with application to Long Valley caldera (California) volcanic rocks, Geol, 17, 837-841.
Khanlari, G., Heidari, R.M. and Jafar-Gholizadeh, H., 2010. EngineeringGeological Assessment of AlvandGranitic Rocks, The1st International Applied Geological Congress Department of Geology Islamic AzadUniversity- Mashhad Branch, IRAN, 26-28 April, 408-413.
Kress, V.C. and Carmichael, I.S.E., 1991. The compressibility of silicate liquids containing Fe2O3 and the effect of composition, temperature, oxygen fugacity and pressure on their redox states. Contrib. Mineral. Petrol, 108, 82–92.
Leake, B.E., Woolley, A.R., Arps, C.E.S., Birch, W.D., Gilbert, M.C. and Grice, G.D., 1997. Nomenclature of Amphibols: Report of the subcommittee on A mphiboles of the international mineralogical, The Canadian Mineralogist, 35, 219-246.
Liu, T.C., Chen, B.R. and Chen, C.H. 2000. Melting experiment of a Wannienta basalt in the Kuanyinshan area, northern Taiwan, Journal of Asian Earth Sciences, 18, 519-531.
Mahmoudabadi, L., Tabatabei Manesh, S.M., and Torabi, G., 2012. Petrography and mineral chemistry of Eocene volcanic in the southwest of Jandaq (northeast of Isfahan). Petrology 3,10, 95-107.
Masoudi, F., and Jamshidi Badr, M., 2008. Biotite and Hornblende Composition Used to Investigate the Nature and Thermobarometry of Pichagchi Pluton, Northwest Sanandaj-Sirjan Metamorphic Belt, Iran., 19,4, 329-338.
Mohajjel, M. and Fergusson, C.L., 2000. Dextral transpression in Late Cretaceous contatinetal collision, Sanandaj-Sirjan Zone", western Iran, Journal of Structural Geology, 22 , 1125-1139.
Mohajjel, M., Fergusson, C.L. and Sahadi, M.R., 2003. Cretaceous - Tertiary contatinetal collision, Sanandaj- Sirjan Zone, western Iran", Journal of Asian Earth Sciences, 21, 397-412.
Moretti, R., 2005. Polymerisation, basicity, oxidation state and their role in ionic modelling of silicate melts. Annals of Geophysics.
Nachit H., Ibhi A., Abia E.H. and Ohoud M.B., 2005. Discrimination between primary magmatic biotites, reequilibrated biotites and neoformed biotites, Geomaterials (Mineralogy), Copmtes Rendus, Geoscience 337, 1415–1420.
Nachit, H., Razafimahefa, N., Stussi. J.M. and Carron, J.P., 1985. Composition chimique des biotites et typologie magmatique des granitoids, Comtes Rendus Hebdomadaires de Academie des Sciences, 301,11, 813-818
Nasrabady, M., 2012. Thermobarometry of intrusion bodies from Soltanabad area (NE Sabzevar): with special reference to their adjoining metamorphic aureole and reaction rim, Petrology, 3,9, 87-106.
Otten, M.T., 1984. The origin of brown hornblende in the Artfjallet gabbro and dolerites. Contrib Mineral Petrol, 86, 189-99.
Parlak, O., HÖck, V. and Delaloye, M., 2000. Suprasubduction Zone Origin of the Pozanti-Karsanti Ophiolite (Southern Turkey) Deduced from Whole-rock and Mineral Chemistry of the Gabbroic Cumulates, The Geological Society of London.
Putrika, K.D., 2008. Thermometers and barometers for volcanic systems.reviess in mineralogy and geochemistry, 69,1, 61-120.
Rieder, M., Cavazzin, G., Dyakonov, Y., Frank-Kamenetskii, V.A., Gottardi, G., Gugganheim, S., Koval, P.V.,Muller, G., Neiva, A.M.R., Radoslovich, E., Robert, J.L., Sassi, F.P., Takeda, H., Weiss, Z. and Wones, D., 1998. Nomenclature of the micas, the canoxlian mineralogist36.
Sabzehei, M. 1974. Les mélanges ophiolitiques de la région d'Sfandagheh (Iran méridional), Etudepetrologique et Structurale, Interprétation dans le cadre Iranien. Ph. D. thesis, Universite de Grenoble,France.
Saki, A., 2010 .Proto-Tethyan remnants in northwest Iran: Geochemistry of the gneisses and metapelitic rocks, Gondwana Research, 17, 704–714.
Schmidt, M.W., 1992. Amphibole composition in tonalite as a function of pressure: an experimental calibration of the Al – in hornblende barometer. Contrib. Mineral. Petrology, 110, 304 – 310.
Schmidt, M.W., 1993. Phase relations and compositions in tonalite as a function of pressure: an experimental study at 650 °C, Amer J Science, 293, 1011-60.
Sengör, A.M.C., 1990 .A new model for the Late Paleozoic-Mesozoic tectonic evolution of Iran and implications for Oman. In: Robertson,A. H., Searle, M. P. & Ries, A. C. (eds) The Geology and Tectonics of the Oman region. Geological Society, London, Special Publications, 49, 797–83.
Sepahi, A.A., 2008. Typology and Petrogenesis of Granitic Rocks in the Sanandaj-Sirjan Metamorphic Belt, Iran, with Emphasis on the Alvandplutonic Complex, N, Jb, Geol. Paläont, Abh, Stuttgart. 247,3, 295–312.
Sepahi, A.A., Whitney, D. L. and Baharifar, A. A., 2004. Petrogenesis of And-Ky-Sil veins and host rocks, Sanandaj-Sirjan metamorphic belt,Hamadan, Iran. Journal of Metamorphic Geology, 22,2, 119-134.
Shahbazi, h., Siebel, W., Pourmoafee, M., Ghorbani, M., Sepahi, A.A., Shang, C.K. and Vosoughi abedini, M., 2010. Geochemistry and U-Pb zircon geochronology of the alvand plutonic complex in sanandaj- sirjan zone (iran): new evidence for Jurassic magmatism journal of asian earth sciences, 9, 668-683.
Shahbazi,H., Siebel,W., Pourmoafee, M.,Ghorbania,M., Sepahi, A,A., Shang, C,K. and Vousoughi Abedinia, M., 2010. Geochemistry and U–Pb zircon geochronology of the Alvand plutonic complex in Sanandaj–Sirjan Zone (Iran): New evidence for Jurassic magmatism, Journal of Asian Earth Sciences, 39, 6, 9, 668-683.
Sheikholeslami, M.R., Rique, A., Mobayen, P., Sabzeie, M., Bellon, and Hashem Emami, M., 2008. Tectono-metamorphic evolution of the Neyriz metamorphic complex, Quri-Kor-e-Sefid area (Sanandaj-Sirjan Zone, SW Iran), Journal of Asian Earth Sciences, 31 , 504–521
Stein, E., and Dietl,C., 2001. Hornblende thermobarometry of granitoids from the Central Odenwald (Germany) and their implications for the geotectonic development of the Odenwald., Mineralogy and Petrology, 72, 185–207.
Stocklin, J., 1968. Structural history and tectonics of iran, a review. Aapg bulletin 52,7,1229-1258.
Stoklin,J., 1952. Structural history and tectonics ofIran; arview; American Association of Petroleum GeologistsBulletin, 52,7, 1229 – 1258.
Tulloch, A.J., and challis, G.A., 2000. Emphacement depths of palezoic-mesozoic plutons from western new Zealand estimated by hornblende-al geobarometry. New Zealand journal of geology and geophysics, 43, 555-567.
Wass, S.Y., 1979. Multiple origins of clinopyroxenes in alkali basaltic rocks. Lithos, 12,115-132.
Welch , M.D., 2012. IMA report, nomengature of the amphibole supergroup. American mineralogist, 97, 2031-2048.
Wones, D.R. and Eugster, H.P., 1965. Stability of biotite: experiment, theory and application. AmericanMineralogist, 50, 1228-1272.
Wones, D.R., Eugster, H.P., 1965. Stability of biotite: experiment, theory, and application”, American Mineralogist, 50, 1228–1272.
Wu, C.M. and Chen, H.X., 2015. Revised Ti-in-biotite geothermometer for ilmenite- or rutile-bearing crustal metapelites. Science Bulletin, 60, 116-121
Wu, C.M., Pan, Y.S., Wang, K.Y. and Zhang, J. 2002. A report on a Bttite − calcic hornblende geothermometer. Acta Geologica Sinica, 76,1: 126 − 131
Yaoling, N., Trinity, G., Suzie, M., Alan, G. and Wolfgang, B., 2002. Mineral chemistry, whole-rock compositions, and petrogenesis of leg 176 gabbros: date and discussion1. Proceedings of the Ocean Drilling Program, Scientific Results Volume 176.
Zhang, S.H., Zhaol, Y.S. and Song, B., 2002. Hornblende thermobarometry of the carboniferous granitoids inner Mongolia paleo-uplifit, implications for mineralogy and petrology, 87, 123-141.