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The Nature of Fluids During Pegmatite Development in Metamorphic Terrains: Evidence from Hamadan Complex, Sanandaj-Sirjan Metamorphic Zone, Iran
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In the Sanandaj-Sirjan zone of metamorphic belt of Iran, the area south of Hamadan city comprises of metamorphic rocks, granitic batholith with pegmatites and quartz veins. Alvand batholith is emplaced into metasediments of early Mesozoic age. Fluid inclusions have been studied using microthermometry to evaluate the source of fluids from which quartz veins and pegmatites formed to investigate the possible relation between host rocks of pegmatites and the fluid inclusion types. Host minerals of fluid inclusions in pegmatites are quartz, andalusite and tourmaline. Fluid inclusions can be classified into four types. Type 1 inclusions are high salinity aqueous fluids (NaCleq >12 wt%). Type 2 inclusions are low to moderate salinity (NaCleq <12 wt%) aqueous fluids. Type 3 and 4 inclusions are carbonic and mixed CO2-H2O fluid inclusions. The distribution of fluid inclusions indicate that type 1 and type 2 inclusions are present in the pegmatites and quartz veins respectively in the Alvand batholith. This would imply that aqueous magmatic fluids with no detectable CO2 were present during the crystallization of these pegmatites and quartz veins. Types 3 and 4 inclusions are common in quartz veins and pegmatites in metamorphic rocks and are more abundant in the hornfelses. The distribution of the different types of fluid inclusions suggests that CO2 fluids generated during metamorphism and metamorphic fluids might also contribute to the formation of quartz veins and pegmatites in metamorphic terrains.
Keywords
Pegmatite, CO2-H2O Fluid Inclusion, Alvand, Sanandaj-Sirjan, Iran.
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- AGARD, P., OMRANI, J., JOLIVET, L. and MOUTHEREAU, F. (2005) Convergence history across Zagros (Iran): constraints from collisional and earlier deformation. Int. Jour. Earth Sci., v.94, pp.401-419.
- ALAVI, M. (1994) Tectonics of the Zagros Orogenic belt of Iran: new data and interpretation. Tectonophysics, v.229, pp.211-238.
- BAHARIFAR, A.A. (2004) Petrology of metamorphic rocks in Hamadan area. Ph.D thesis, Tarbiat Moallem University, Tehran, Iran. 218p. (in Persian).
- BAHARIFAR, A.A., MOINEVAZIRI, H., BELLON, H. and PIQUE, A. (2004) The crystalline complexes of Hamadan (Sanandaj-Sirjan zone, western Iran): metasedimentary Mesozoic sequences affected by Late Cretaceous tectono-metamorphic and plutonic events. C.R. Geoscience, v.336, pp.1443-1452.
- BERBERIAN, M. and KING, G.C.P. (1981) Towards a paleogeography and tectonic evolution of Iran. Cand. Jour. Earth.Sci, v.18, pp.210-265.
- BEURLEN, H., SILVA, M.R.R. and CASTRO, C. (2000) Fluid inclusion microthermometry in Be-Ta-(Li-Sn)-bearing pegmatites from the Borborema Province, Northeast Brazil. Chem. Geol., v.173, pp.107-123.
- BODNAR, R.J. (1992) Revised equation and table for freezing point depressions of H2O-salt fluid inclusions (abst.) PACROFI, Fourth Biennial Pan-American Conference on Research on Fluid Inclusions, Program and Abstracts, Lake Arrowhead, Ca, 4, p.15.
- CERNY, P. (1993 Rare-element granitic pegmatites. Part 1: Anatomy and internal evolution of pegmatite deposits. In: P.A. Sheahan and M.E. Cherry (Eds.))Ore Deposit Models. Geosci. Can., Repr. Ser., v.6, pp.29-47.
- FOORD, E.E., LONDON, D., KAMPF, A.R., SHIGLEY, J.E. and SNEE, L.W. (1991) Gem-bearing pegmatites of San Diego County, California. In: M.J. Walawender and B.B. Haanan (Eds.), Geological Excursions in Southern California and Mexico. Geol. Soc. Amer. Guidebook, Boulder, Colorado, pp.128-146.
- GHASEMI, A. and TALBOT, C.J. (2006) A new tectonic scenario for the Sanandaj-Sirjan Zone (Iran). Jour. Asian Earth Sci., v.27, pp.683-693.
- LONDON, D. (1995) Geochemical features of peraluminous granites, pegmatites, and rhyolites as sources of lithophile metal deposits. In: J.F.H. Thompson (Ed.), Magma, Fluids, and Ore Deposits. Mineral. Assoc. Can. Short-Course Handbook 23, pp.175-202.
- LONDON, D. (1996) Granitic pegmatites. Trans. Royal Soc. Edinburgh , v.87, pp. 305-319.
- LONDON, D. (2005) Granitic pegmatite: an assessment of current concepts and directions for the future. Lithos, v.80, pp.281-303.
- LONDON, D. and BURT, D.M. (1982) Lithium aluminosilicate occurrences in pegmatite and the lithium aluminosilicate phase diagram. Amer. Mineral., v.67, pp.483-493.
- LONDON, D., MORGAN, G.B. VI. and HERVIG, R.L. (1989) Vapor undersaturated experiments with Macusani glass +H2O at 200 MPa, and the internal differentiation of granitic pegmatites. Contrib. Mineral. Petrol., v.102, pp.1-17.
- MAJIDI, B. and AMIDI, M. (1980) Explanatory text of Hamadan quadrangle map, scale 1:250,000. Geographical Survey of Iran.
- MANNING, D.A.C. (1981) The effect of fluorine on liquidus phase relationships in the system Qz-Ab-Or with excess water at 1kb. Contrib. Mineral. Petrol., v.76, pp.206-215
- MASOUDI, F. and YARDLEY, B.W.D. (2005) Magmatic and metamorphic fluids in pegmatite development: Evidence from Borujerd Complex, Iran. Jour. Sci., v.16(1), pp.43-53.
- MOHAJJEL, M., FERGUSSON, C.L. and SAHANDI, M.R. (2003) Cretaceous-Tertiary convergence and continental collision, Sanandaj-Sirjan Zone, western Iran. Jour. Asian Earth Sci., v.21, pp.397-412.
- NABELEK, P.I. and TERNES, K. (1997) Fluid inclusions in the Herney Peak Granite, Black Hills, South Dokota, USA: Implications for solubility and evolution of magmatic volatiles and crystallization of leucogranite magmas. Geochim. Cosmochim. Acta, v.61, pp.1447-1465.
- NABELEK, P.I. and WILKE, M. (2002) Carbonic fluid production during regional and contact metamorphism in the Black Hills, USA. Goldschmidt Conference Abstracts.
- REZAI AGHDAM, M. (2004) The nature of the fluid inclusions and their role in the formation of pegmatites in Hamadan. MSc thesis. Tarbiat Moallem University (in Farsi)
- SEPAHI, A. (1999) Petrology of Alvand plutonic complex with special reference on granitoids. Ph.D thesis, Tarbiat Moallem University, Tehran, Iran. 348p. (in Persian)
- SEPAHI, A.A., WHITNEY D.L. and BAHARIFAR A.A. (2004) Petrogenesis of andalusite-kyanite-sillimanite veins and host rocks, Sanandaj-Sirjan metamorphic belt, Hamadan, Iran. Jour. Metamorphic Geol., v 22, pp.119-134.
- SHILOBREEVA, S.N. and KADIK, A.A. (1987) Carbon and its volatile compounds in silicate melts and crystals: Experimental data. Proc.First Indo-Soviet Workshop on Exp. Mineral. Petrol. New Delhi, pp.39-41.
- SIRBESCU, M. and NABELEK, P. (2003) Crystallization conditions and evolution of magmatic fluids in the Harney Peak Granite and associated pegmatites, Black Hill, South Dakota-Evidence from fluid inclusions, Geochim. Cosmochim. Acta, v.67, pp.2443-2465.
- SMEREKANICZ, J.R. and DUDAS, F.O. (1999) Reconnaissance fluid inclusion study of Morefield pegmatite, Amelia County, Virginia. Am. Mineral., v.84, pp.746-753.
- STOCKLIN, J. (1968) Structural history and tectonics of Iran: A review. AAPG, 52970, pp.1229-1285.
- STONLEY, R. (1990) The Arabian continental margin in Iran during the Late Cretaceous. In: A.H.F. Robertson, M.P. Searie and A.C. Ries (Eds.),The geology and tectonics of the Oman region. Geol. Soc. London Spec. Publ., No.49, pp.787-795.
- THIELE, O., ALAVI, M., ASSEF, R., HUSHMAND-ZADEH, A., SEYEDEMAMI, K. and ZAHEDI, A. (1968) Golpaygan quadrangle map, scale 1:250,000 with explanatory text. Geographical Survey of Iran.
- THOMAS, A.V., PASTERIS, J.D., BRAY, C.J. and SPOONER, T.C. (1989) H2O-CH4-NaCl-CO2 inclusions from the footwall contact of the Tanco granitic pegmatite: Estimates of internal pressure and composition from microthermometry, laser Raman spectroscopy, and gas chromometry. Geochim. Cosmochim. Acta, v.54 , pp.559-573.
- VALIZADEH, M.V. and CANTAGREL, J.M. (1975) Premiers donnees radiometriques (K-Ar) et (Rb-Sr) sur les micas du complexe du Mount dAlvand.C.R. Acad. Sci. Paris, t.281, Serie D, 1083-1086.
- WHITWORTH, M.P. and RANKIN, A.H. (1989) Evolution of fluid phases associated with lithium pegmatites from SE Ireland. Mineral. Mag., v.53, pp.271-284.
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