Petrología y petrogénesis del masivo intrusivo de SiahKuh en el sur de KhoshYeilagh
Palabras clave:
Gobbro, diorita, medio ambiente extensible, SiahKuh, Irán.Resumen
SiahKuh se encuentra en la parte noreste de la ciudad de Shahrood y en la zona oriental de Alborz. El estudio del área utilizando modelos geoquímicos donde se utilizaron 60 muestras de rocas intrusivas, permitió determinar que la composición petrológica de la región consiste en Gabbro, Monzodiorita, Sienita, Monzonita y Diorita. Plagioclasa. Piroxeno y olivino constituyen los principales minerales de Gabbro y Diorita. También se observan texturas granulares, intergranulares y ópticas. En la sienita y monzonita, se puede observar plagioclasa, feldespato alcalino y algunas veces cuarzo, granular y variolita. Con base en estudios geoquímicos, el magma produjo desde las rocas hasta la calca alcalina intermedia con potasio alto y las anomalías negativas de Nb, Rb, P y el enriquecimiento de las rocas de la región a partir de elementos de tierras raras (LRRE) y la alta proporción de LREE / HREE representa la propagación de la corteza y una indicación de la presencia de la fase Granate en la fuente del manto. El magma de basalto inicial se creó a partir de un manto con una composición de Lerzolite-Granate con un punto de fusión del 12-15%. La evidencia estructural sugiere la formación de estas rocas en la grieta intercontinental. La formación de estas rocas se puede atribuir a los efectos de las fases de tracción intercontinentales asociadas con fallas profundas durante las fases orogénicas alpinas en el tiempo del eoceno.
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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.
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.
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2018-12-27
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Baratian, M., Arian, M.-A., & Yazdi, A. (2018). Petrología y petrogénesis del masivo intrusivo de SiahKuh en el sur de KhoshYeilagh. Amazonia Investiga, 7(17), 616–629. Recuperado a partir de https://amazoniainvestiga.info/index.php/amazonia/article/view/777
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