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Manuscript ID : 542439 Visit : 132 Page: 68 - 77

Article Type: Original Research

Geochemical evolution and petrogenesis of the eocene Kashmar granitoid rocks, NE Iran: implications for fractional crystallization and crustal contamination processes

Subject Areas : Mineralogy

Rahim Dabiri 1 , Mohsen Akbari-Mogaddam 2 , Mitra Ghaffari 3

1 - Department of Geology, Faculty of Science, Islamic Azad University, Mashhad, Iran
2 - Geological Survey of Iran, North- East Territory, Mashhad, Iran
3 - Department of Geology, Tarbiat Modares University, Tehran, 14115–175, Iran

Received: 2018-08-10 Accepted : 2018-08-10 Published : 2018-04-01

Keywords: Contamination, Geochemical Modeling, Petrogenesis, Granitoids, Taknar Zone,

Abstract :

Kashmar granitoids of Taknar zone, in north part of Lut block, intruded into volcanic rocks and consist of granites, granodiorites, monzodiorite and gabbrodiorites. They are composed of mainly plagioclase, alkali-feldspar, quartz, amphibole, biotite and pyroxene minerals. Harker diagram variation, including negative correlations CaO, MgO, FeO, TiO2 and V and positive correlations K2O, Rb, Ba, and Th, with increasing SiO2 and chondrite-normalized REE patterns, suggest that fractional crystallization of gabbrodioritic rocks could have played a significant role in the formation of granites. Their chondrite-normalized REE patterns are characterized by LREE enrichment and show slight negative Eu anomalies. Chondrite-normalized REE modelling indicates that the magma of Kashmar gabbrodiorites were generated with 3–5% of partial melting of a a spinel-lherzolite source. Melting of parental magma located at ~53 km.

References:


  1. Alaminia Z, Karimpour MH, Homam SM, Finger F (2013) The magmatic record in the Arghash region (northeast Iran) and tectonic implications, International Journal of Earth Sciences: Geologische Rundschau 102:1603- 1625.
    2.
  2. Alavi M (1991) Tectonic map of the Middle East: Tehran, Geological Survey of Iran, Scale 1:5,000,000.
    3.
  3. Aldanmaz E, Pearce JA, Thirlwall M, Mitchell J (2000) Petrogenetic evolution of late Cenozoic, post-collision volcanism in western Anatolia, Turkey, Journal of Volcanology and Geothermal Research 102:67-95.
    4.
  4. Asiabanha A, Foden J (2012) Post-collisional transition from an extensional volcano-sedimentary basin to a continental arc in the Alborz Ranges, N-Iran, Lithos 148:98-111.
    5.
  5. Baker J, Menzies M, Thirlwall M, Macpherson C (1997) Petrogenesis of Quaternary intraplate volcanism, Sana'a, Yemen: implications for plume-lithosphere interaction and polybaric melt hybridization, Journal of Petrology 38:1359-1390.
    6.
  6. Behn MD, Grove TL (2015) Melting systematics in mid‐ocean ridge basalts: Application of a plagioclase‐spinel melting model to global variations in major element chemistry and crustal thickness, Journal of Geophysical Research: Solid Earth 120:4863-4886.
    7.
  7. Cox KG, Bell JD, Pankhurst RJ (1979) The interpretation of igneous rocks. G. Allen & Unwin.
    8.
  8. Davies D, Rawlinson N, Iaffaldano G, Campbell I (2015) Lithospheric controls on magma composition along Earth's longest continental hotspot track, Nature 525:511-514.
    9.
  9. Ellam R (1992) Lithospheric thickness as a control on basalt geochemistry, Geology 20:153-156.
    10.
  10. Fujimaki H, Tatsumoto M, Aoki Ki (1984) Partition coefficients of Hf, Zr, and REE between phenocrysts and groundmasses, Journal of Geophysical Research: Solid Earth 89(S02): B662-B672.
    11.
  11. Green NL (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, Lithos 87:23-49.
    12.
  12. Gurenko AA, Chaussidon M (1995) Enriched and depleted primitive melts included in olivine from Icelandic tholeiites: Origin by continuous melting of a single mantle column, Geochimica et cosmochimica acta 59:2905-2917.
    13.
  13. Hanson GN (1978) The application of trace elements to the petrogenesis of igneous rocks of granitic composition, Earth and Planetary Science Letters 38:26-43.
    14.
  14. Hanson GN (1980) Rare earth elements in petrogenetic studies of igneous systems, Annual Review of Earth and Planetary Sciences 8: 371-406.
    15.
  15. Hofmann A, White W, Whitford D (1978) Geochemical constraints on mantle models: the case for a layered mantle, Carnegie Inst, Washington Yearb 77:548-562
    16.
  16. Hofmann AW (1988) Chemical differentiation of the earth - The relationship between mantle, continental crust, and oceanic crust, Earth and Planetary Science Letters 90:297–314.
    17.
  17. Johnson KTM (1998) Experimental determination of partition coefficients for rare earth and high-field-strength elements between clinopyroxene, garnet, and basaltic melt at high pressures, Contributions to Mineralogy and Petrology 133:60-68.
    18.
  18. Katz RF, Spiegelman M, Langmuir CH (2003) A new parameterization of hydrous mantle melting, Geochemistry, Geophysics, Geosystems 4(9).
    19.
  19. Keskin M (2005) Domal  uplift  and  volcanism  in  a  collision  zone  without  a  mantle  plume:  Evidence  from Eastern Anatolia. www.MantlePlumes.org.
    20.
  20. Liu JQ, Chen LH, Zeng G, Wang XJ, Zhong Y, Yu X (2016) Lithospheric thickness controlled compositional variations in potassic basalts of Northeast China by melt‐rock interactions, Geophysical Research Letters 43:2582-2589.
    21.
  21. McKenzie D, O'Nions R (1991) Partial melt distributions from inversion of rare earth element concentrations, Journal of Petrology 32:1021-1091.
    22.
  22. Monazzami Bagherzadeh R, Karimpour MH, Farmer GL, Stern C, Santos J, Rahimi B, Heidarian Shahri MR (2015) U–Pb zircon geochronology, petrochemical and Sr–Nd isotopic characteristic of Late Neoproterozoic granitoid of the Bornaward Complex (Bardaskan-NE Iran), Journal of Asian Earth Sciences 111:54-71.
    23.
  23. Munker C (2000) The isotope and trace element budget of the Cambrian Devil River arc system, New Zealand: identification of four source components, Journal of Petrology 41:759-788.
    24.
  24. Nakamura N (1974) Determination of REE, Ba, Fe, Mg, Na and K in carbonaceous and ordinary chondrites, Geochimica et cosmochimica acta 38:757-775.
    25.
  25. Pearce J, Peate D (1995) Tectonic implications of the composition of volcanic arc magmas, Annual Review of Earth and Planetary Sciences 23:251-286.
    26.
  26. Pearce JA (2008) Geochemical fingerprinting of oceanic basalts with applications to ophiolite classification and the search for Archean oceanic crust, Lithos 100:14-48
    27.
  27. Ramezani J, Tucker RD (2003) The Saghand region, central Iran: U-Pb geochronology, petrogenesis and implications for Gondwana tectonics, American journal of science 303:622-665.
    28.
  28. Rollinson HR (1993) Using geochemical data: evaluation, presentation, interpretation. Routledge.
    29.
  29. Rudnick RL, Fountain DM (1995) Nature and composition of the continental crust: a lower crustal perspective, Reviews of geophysics 33:267-309.
    30.
  30. Schmädicke E, Gose J, Reinhardt J, Will TM, Stalder R (2015) Garnet in cratonic and non-cratonic mantle and lower crustal xenoliths from southern Africa: Composition, water incorporation and geodynamic constraints, Precambrian research 270:285-299.
    31.
  31. Shafaii Moghadam H, Li X-H, Ling X-X, Santos JF, Stern RJ, Li Q-L, Ghorbani G (2015) Eocene Kashmar granitoids (NE Iran): petrogenetic constraints from U–Pb zircon geochronology and isotope geochemistry, Lithos 216:118-135.
    32.
  32. Shaw DM (1970) Trace element fractionation during anatexis, Geochimica et cosmochimica acta 34:237-243.
    33.
  33. Sobolev AV, Hofmann AW, Kuzmin DV, Yaxley GM, Arndt NT, Chung S-L, Danyushevsky LV, Elliott T, Frey FA, Garcia MO (2007) The amount of recycled crust in sources of mantle-derived melts, Science 316:412-417.
    34.
  34. Soltani A (2000) Geochemistry and geochronology of I-type granitoid rocks in the northeastern central Iran plate.  Ph.D thesis, School of Geosciences, University of Wollongong.
    35.
  35. Stöcklin J, Nabavi M (1972) Tectonic Map of Iran. Geological Survey of Iran.
    36.
  36. Sun SS, McDonough W (1989) Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes, Geological Society, London, Special Publications 42:313-345.
    37.
  37. Taylor SR, McLennan SM (1995) The geochemical evolution of the continental crust, Reviews of Geophysics 33:241-265.
    38.
  38. Wedepohl KH (1995) The composition of the continental crust, Geochimica et cosmochimica acta 59:1217-1232.
    39.
  39. Wilson M (1989a) Igneous petrogenesis. Springer.
    40.
  40. Wilson M (1989b) Igneous petrogenesis: A global tectonic approach: London, Unwyn Hyman.
    41.
  41. Zhao JH, Zhou MF (2007) Geochemistry of Neoproterozoic mafic intrusions in the Panzhihua district (Sichuan Province, SW China): implications for subduction-related metasomatism in the upper mantle, Precambrian research 152:27-47.
    42.

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