OJG  Vol.4 No.9 , September 2014
Geochemistry and Petrogenesis of Intrusive Pluton in North of Golpayegan (Central Part of Sanandaj-Sirjan Zone)
ABSTRACT
Granitoid pluton in the north of Golpayegan is located in10 kmnorth of Golpayegan at SanandajSirjan zone. Dominant rocks of this region include granite, syenite, and gabbro. Granite type is granular with medium to coarse crystals and its mineralogical composition contains alkali feldspar + quartz + plagioclase + biotite + secondary minerals (opaque + sphene + apatite). Granite rocks have calc-alkaline and metaluminous to peraluminous nature, relative enrichment of Rb over Sr, and relative enrichment of LILE over HFSE elements. These granites, which are type I, are derived from the melting of metagreywackes and their tectonic setting is of upper continental crust and post-orogenic setting. Gabbroic type is older than other types of the pluton and is granular with medium to fine crystal. Mineralogical composition of these rocks is plagioclase + pyroxene + amphibole + biotite + secondary minerals (opaque). Based on geochemical characteristics of tholeiitic and metaluminous nature, relative enrichment of Ba and Sr elements over Rb, relative enrichment of LILE elements over HFSE, negative anomaly of Nb, Ba, and Ta, and positive anomaly of Pb are observed. Origin of this type is probably from enriched mantle and in-plane tectonic setting.

Cite this paper
Shahpari, M. , Ardalan, A. , Emami, M. , Arian, M. and Yazdi, A. (2014) Geochemistry and Petrogenesis of Intrusive Pluton in North of Golpayegan (Central Part of Sanandaj-Sirjan Zone). Open Journal of Geology, 4, 481-494. doi: 10.4236/ojg.2014.49035.
References
[1]   Thiele, O., et al. (1968) Explanatory Text of the Golpaygan Quadrangle Map 1:250,000. Geological Survey of Iran, No. E7, Tehran.

[2]   Ebrahimi, M. (1991) Survey of Geology and Petrology of the Igneous Rocks Golpayegan Mrq-White Springs. Graduate Thesis, Tehran University, Tehran.

[3]   Sharifi, M. (1997) Geology and Petrology of Metamorphic and Igneous Rocks in the North East Golpayegan. Master’s Thesis, University of Isfahan, Isfahan.

[4]   AhmadiKhalaj, A. (1999) Evaluation Petrology and petrofabric of intrusive and metamorphic of Borogerd area. Master’s Thesis, Tehran University, Tehran.

[5]   Stocklin, J. (1968) Structural History and Tectonics of Iran: A Review. American Association of Petroleum Geologists Bulletin, 52, 1229-1258.

[6]   Hassanzadeh, J. (2013) Conference GSI-Geochronology in Geological Survey of Iran.

[7]   Aghanabati, A. (2006) Geology of Iran, Geological Survey and Mineral Exploration. Country Publications, Tehran.

[8]   Moinvaziri, H. And Ahmadi, A. (1996) Petrography and Petrology of Igneous Rocks. Teacher Training University Press, Tehran.

[9]   Ghalamghash, J. (2002) Petrology of the Intrusive Rocks Branch-Oshnoyeh Fit into Their Works. Ph.D. Thesis, Shahid Beheshti University, Tehran.

[10]   Emami, M.H. (2000) Quarterly Journal of Earth Sciences, 12, 203-214.

[11]   Berberian, M. and King, G.C.P. (1981) Towards a Pale Geography and Tectonic Evaluation of Iran. Canadian Journal of Earth Sciences, 18, 210-265.

[12]   Harker, A. (1909) The Natural History of Igneous Rocks. Methuen and Co., London, 344 p.

[13]   Chappell, B.W. and White, A.J.R. (1992) I- and S-Type Granites in Lachlan Fold Belt. Transactions of the Royal Society of Edinburgh: Earth Sciences, 83, 1-26. http://dx.doi.org/10.1017/S0263593300007720

[14]   Rollinson, H. (1993) The Geochemistry of Mafic and Ultramafic Rocks from the Archaen Greenstone Belts of Sierra Leone. Mineralogical Magazine, 47, 267-280.
http://dx.doi.org/10.1180/minmag.1983.047.344.01

[15]   Boynton, W.V. (1984) Cosmochemistry of the Rare Earth Elements: Meteorite Studies. In: Henderson, P., Ed., Rare Earth Element Geochemistry, Elsevier, Amsterdam, 63-114.

[16]   Henderson, P. (1984) Rare Earth Element Geochemistry. Elsevier Science Publishers B.V., Amsterdam, 510 p.

[17]   Sun, S. and McDonough, W.F. (1989) Chemical and Isotopic Systematic of Oceanic Basalts: Implications for Mantle Composition and Processes. Geological Special Publication, No. 42, 313-345.

[18]   Kelement, P.B., Jonson, K.T.M., Kinzler, R.J. and Irving, A.J. (1990) High-Fied-Strength Element Depletion in Arc Basalts Due to Mantle—Magma Interaction. Nature, 345, 521-524.
http://dx.doi.org/10.1038/345521a0

[19]   Wilson, R. (1990) Paralomis Otsuae, a New Species of the Decapoda Anomura from Deep Waters off the Chilean Coast. Crustaceana, 58, 130-135. http://dx.doi.org/10.1163/156854090X00039

[20]   Rapp, R.P. and Watson? E.B. (1995) Dehydration Melting of Metabasalt at 8 - 32 kbar: Implications for Continental Growth and Crust-Mantle Recycling. Journal of Petrology, 36? 891-931.
http://dx.doi.org/10.1093/petrology/36.4.891

[21]   Chappell, B.W. and White, A.J.R. (1974) Two Contrasting Granite Types. Pacific Geology, 8, 237-253.

[22]   Douce, A.E.P. (1999) Generation of Granitoids. Geology 25.

[23]   Pearce, J.A., Harris, N.B.W. and Tindle, A.G. (1984) Trace Element Discrimination Diagrams for the Tectonic Interpretation of Granitic Rocks. Journal of Petrology, 25, 965-983.
http://dx.doi.org/10.1093/petrology/25.4.956

[24]   Pearce, J. (1996) Source and Setting of Granitic Rocks. Episode, 19, 120-125.

[25]   Maniar, P.D. and Piccoli, P.M. (1989) Tectonic Discrimination of Granitoids. Geological Society of America Bulletin, 101, 635-643.

[26]   Mullen, E.D. (1983) MnO/TiO2/P2O5: A Minor Element Discriminant for Basaltic Rocks of Oceanic Environment and Its Implications for Petrogenesis. Earth and Planetary Science Letters, 62, 53-62. http://dx.doi.org/10.1016/0012-821X(83)90070-5

[27]   Meschede, M. (1986) A Method of Discriminating between Different Types of Mid-Ocean Ridge Basalt and Continental Tholeiites with the Nb-Zr-Y Diagram. Chemical Geology, 56, 207-218.
http://dx.doi.org/10.1016/0009-2541(86)90004-5

[28]   Davoudian, A.R., Hamedani, A., Shabanian, N. and Mackizadeh, M.A. (2007) Petrological and Geocemical Constraints on the Evolution of the Cheshmeh-Sefid Granitoid Complex of Golpayegan in the Sanandaj-Sirjan Zone. Neues Jahrbuch für Mineralogie-Abhandlungen: Journal of Mineralogy and Geochemistry, 184, 117-129.

 
 
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