Petrology and petrogenesis of the SiahKuh intrusive Massive in the South of KhoshYeilagh
Keywords:
Gobbro, diorite, environment tensile, SiahKuh, Iran.
Abstract
SiahKuh is located in the NorthEastern part of Shahrood city and in the Eastern Alborz zone. The study of the area using geochemical models where 60 samples of intrusive rocks were used, allowed to determine that the petrological composition of the region consists of Gabbro, Monzodiorite, Syenite, Monzonite and Diorite. Plagioclase, Pyroxene and Olivine constitute the main minerals of Gabbro`s and Diorite`s. Granular, Intergranular and Optic texture are also observed. In the Syenite and Monzonite, Plagioclase, alkali feldspar and sometimes quartz, granular and variolite texture can be seen. Based on geochemical studies, the magma produced from the rocks to the intermediate calk alkaline with high potassium and the negative anomalies of Nb, Rb, P and the enrichment of the rocks of the region from rare earth elements (LRRE) and the high ratio of LREE/HREE represents spread of the crust and an indication of the presence of the Garnet phase in the mantle source. The initial basalt magma was created from a mantle with a composition of Lerzolite-Garnet with a melting point of 12-15%. Structure evidence suggests the formation of these rocks in the intercontinental rift. The formation of these rocks can be attributed to the effects of intercontinental tensile phases associated with deep fault during alpine orogenic phases in the time eocene.
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References
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Allen, M. B., Stephen, J. V., Alsop, G., Ismail Zadeh, A. &Flecker, R., 2003b- late Cenozoicdeformation in the South Caspian region: effects of a rigid basement block within a collision zone. Tectonophysics, V. 366, P. 223-239.
Asiabanha, A., Foden, F., 2012. Post-collisional transition from an extensional volcano-sedimentary basin to a continental arc in the Alborz ranges, N-Iran, Lithos, 148, 98–111.
Cox, K. G., Bell, J. D. & Pankhurst, R. J., 1979- “The Interpretation Igneous rocks, London”, George Allen &Unwin.
De La Roche, H., Leterrier, J., Grandclaude, P. &Marchal, M. (1980). A classification of volcanic and plutonic rocks using R1R2-diagram and major element analyses – its relationships with current nomenclature. Chemical Geology29, 183–210.
Ershov, A. V., Brunet, M. F., Nikishin, A. M., Bolotov, A. N., Nazarevich, B. P. &Korotaev, M. V., 2003- “Northern Caucasus Basin: thermalhistory and synthesis of subsidence models”, Journal of Sedimentary Geology 156: 95-118.
Glasser.,N., Bennet. R.M., Huddart, D., 1999. Distribution of glaciofluvial sediment within and on the surface of a high arctic valley glacier: Marthabreen, Svalbard.h . Journal of Eart surface processes and landforms. Vol. 24., PP. 303-318.
Glazner, A. F., and W. Ussler III (1989), Crustal extension, crustal density,and the evolution of Cenozoic magmatism in the Basin and Range of the western United States, J. Geophys. Res., 94, 7952–7960, doi:10.1029/JB094iB06p07952.
Guest, B., Guest, A. &Axen, G., 2007. Late Tertiary tectonic evolution of Northern Iran: A case for simple crustal folding”, Journal of Global and Planetary Change 58: 435-453.
Hirayama, K., Samimi, M., Zahedi, M. &Hushmand-Zadeh, A., 1966- “Geology of the Taroum District, Western Part (Zanjan area North-west Iran)”, Geological Survey of Iran, Report 8, 31p.
Humphreys, E., E. Hessler, K. Dueker, G. L. Farmer, E. Erslev, and T. Atwater (2003), How Laramide‐age hydration of North American lithosphere by the Farallon slab controlled subsequent activity in the western United States, Int. Geol. Rev., 45, 575–595, doi:10.2747/0020- 6814.45.7.575.
Irvine, T. N. &Baragar, W. R. A., 1971- “A Guide to the chemical classification of the common Volcanic Rocks”, Canadian Journal of Earth Science 8: 523-548
Kelemen, P.B., Kikawa, E., Miller, D.J., and Shipboard Science Party, 2004, Proceedings of the Ocean Drilling Program, Initial reports, Volume 29: College Station, Texas, Ocean Drilling Program, doi: 10.2973/odp.proc.ir.209.2004.
Plank, T., and C. H. Langmuir (1988), An evaluation of the global variations in the major element chemistry of arc basalts, Earth Planet. Sci. Lett., 90, 349–370, doi:10.1016/0012-821X(88)90135-5.
Stevenson, D.J., 2003. Styles of mantle convection and their influence on planetary evolution. C. R. Geosci., 335, 99– 111.
Stöcklin, J., 1968, Structural history and tectonics of Iran: Areview: American Association of Petroleum Geologists, v.52, p. 1229–1258.
Sun, S. S. and McDonough, W. F., 1989, Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes” In: Saunders, A.D., Norry, M.J. (Eds.), Magmatism in the Ocean Basins. GeolSoc Spec Publ., Vol. 42, PP. 313-345.
Thirwall, F. M., Upton, B. J., and Jenkins, C., 1994, Intraction between continental lithosphere and Iceland plume Sm-Nd-Pb isotope geochemistry of Tertiary basalts, Ne Greenland. Journal of Petrol., Vol.35, PP. 839-879.
White, R. S., and McKenzie, D., 1995, Mantle plumes and flood basalts. J Geophys Res., Vol. 100, PP. 17543-17585.
Xu, Y. G., Ma, J. L., Frey, F. A., Feigenson, M. D., and Liu, J. F., 2005, Role of lithosphere asthenosphere interaction in the genesis of Quaternary alkali and tholeiitic basalts from Datong, western North China Craton. Chem Geol., Vol. 224, PP. 247-271.
Yaxley, G. M., 2000, Experimental study of the phase and melting relations of homogeneous basalt+peridotite mixtures and implications for the petrogenesis of flood basalts. Contrib Mineral Petr., Vol. 139, PP. 326-338.
Zanchi, A., Berra, F., Mattei, M., Ghassemi, M. R. &Sabouri, J., 2006- “Inversion tectonics in Central Iran”, Journal of Structural Geology 28: 2023-2037.
Zonenshain, L. P. &Lepichon, X., 1986- “Deep basins of black sea and Caspian Sea as remnants of Mesozoic back-arc basin”, Tectonophysics. 123: 181-211.
Pearce J.A., (1983 ),Role of the sub – continental lithosphere in magma gensis at activevcontinental margins . In :Hawkesworth C . J. and Norry M.J.(eds ), Continental basalts and Mantle Xenoliths. Shiva ,Natwich ,pp.230 – 249 .
Harker A.,(1909),The natural history of igneous rocks, Methuen ,LONDON,348 p.
Schiano, P., Monzier, M., Eissen, J.P., Martin, H., Koga, K.T., 2010. Simple mixing as themajor control of the evolution of volcanic suites in the Ecuadorian Andes. Contributionsto Mineralogy and Petrology 160, 297–312.
Biermanns, L. (1996), Chemical classification of gabbroic-dioritic rocks, based on TiO2, SiO2, FeOt, MgO, K2O,Y and Zr. UniversitatTubnigen, Institut und musium for geologie und palapntologie. Third ISAG, St Malo (France).
Green, L;Nathan(2006), Influence of slab thermal structure on basalt source regions and melting conditions: REE and HFSE constraints from the Garibaldi volcanic belt, Northern Cascadia subduction system. Journal of Lithos,87, 23– 49pp.
He, Q., Xiaoa, L., Baltab, B., Gao, R. and Chen, J., 2010, Variety and complexity of the Late-Permian Emeishan basalts: Reappraisal of plume-lithosphere interaction processes. Lithos., Vol. 119, PP. 91-107.
Hart, W. K., Wolde, G. C., Walter, R. C., Mertzman S. A., 1989, Basaltic volcanism in Ethiopia: constraints on continental rifting and mantle interactions. Journal of Geophys Res., Vol. 94, PP. 7731-7748.
Zeng, G., Chen, L., Xu, X., Jiang, Sh. and Hofmann, A., 2010, Carbonated mantle sources for Cenozoic intra-plate alkaline basalts in Shandong, North China. Chem. Geol., Vol. 273, PP. 35-45.
Azizi, H., Hadad, S., Stern, R., Asahara, Y., 2018, Age, geochemistry, and emplacement of the ~40-Ma Baneh granite–appinitecomplex in a transpressional tectonic regime, Zagros suture zone, NorthwestIran. International Geology Review, DOI: 10.1080/00206814.2017.1422394
Tappa, M.J., Coleman, D.S., Mills, R.D., and Samperton, K. M., 2011, The plutonic record of a silicic ignimbrite from the Latir volcanic field, New Mexico: Geochemistry, Geophysics, Geosystems, v. 12, no. 10, Q10011, doi: 10.1029/2011GC003700.
Temizel, I; Arslan, M. (2008), Petrology and geochemistry of Tertiary volcanic rocks from the-Ikizce (Ordu) area, NE Turkey: Implications for the evolution of the Eastern Pontidepaleo-magmatic arc. Journal Of Asian Earth Sciance, 31, pp. 439-463.
Published
2018-12-27
How to Cite
Baratian, M., Arian, M.-A., & Yazdi, A. (2018). Petrology and petrogenesis of the SiahKuh intrusive Massive in the South of KhoshYeilagh. Amazonia Investiga, 7(17), 616-629. Retrieved from https://www.amazoniainvestiga.info/index.php/amazonia/article/view/777
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