• صفحه اصلی
  • Eocene-Oligocene volcanic units of momen abad, east of Iran: petrogenesis and magmatic evolution

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آدرس مقاله


کد مقاله : IJES-1804-1205 (R2) بازدید : 162 صفحه: 126 - 140

10.30495/ijes.2019.665319

نوع مقاله: پژوهشی

Eocene-Oligocene volcanic units of momen abad, east of Iran: petrogenesis and magmatic evolution

محورهای موضوعی : Mineralogy

Sahar Tarabi 1 , Mohamad Hashem Emami 2 , Sourosh Modabberi 3 , Seyed Jamal Sheikh Zakariaee 4

1 - Department of Geology, Science and Research Branch, Islamic Azad University, Tehran, Iran
2 - Department of Geology, Islamshahr Branch, Islamic Azad University, Tehran, Iran
3 - School of Geology, College of Science, University of Tehran, Tehran, Iran
4 - Department of Geology, Science and Research Branch, Islamic Azad University, Tehran, Iran

تاریخ دریافت : 1397/02/03 تاریخ پذیرش : 1397/04/20 تاریخ انتشار : 1398/01/12

کلید واژه: East of Iran, Momen Abad, Fractional crystallization, Volcanics, Rare Earth Elements (REE),

چکیده مقاله :

This study investigates petrology and major, minor, and rare earth elements ‎geochemistry of ‎East Iranian Eocene–Oligocene volcanic rocks in Sistan suture ‎zone, to examine their ‎petrogenesis and magma evolution. The volcanic rocks include andesite, trachy-andesite, dacite ‎and rhyolite. ‎These calc-alkaline rocks of high-K series are enriched in Large ‎Ion Lithophile ‎Elements of Rb and Ba and depleted in High Field Strength Elements ‎(e.g. Ti and Nb). The REE ‎pattern shows Eu negative anomaly. These ‎features are comparable with rocks in subduction ‎zone of continental ‎margin setting. ‎The petrographic features and the geochemical variation ‎of major oxides and trace ‎elements against SiO2 can be related to fractional ‎crystallization in parent magma. The trace ‎element ratios, e.g. Nb/La, Nb/U, Ba/Rb, Nb/Y and Rb/Y, verify crustal ‎contamination with a remarkable upper ‎crustal contamination as the main ‎process in the ‎formation of volcanic series. ‎The ratios of Nb/Ba and Nb/Zr indicate that magmatic activity in Momen Abad had ‎resulted ‎from sub-continental lithospheric mantle. In addition, Nb/Y and Zr/Yb versus ‎Ta/Yb reveals an ‎E-MORB like mantle source. A spinel lherzolite composition ‎with significant role of the ‎AFC processes are deduced from the concentrations of Yb and ‎Y, and the ratios of Th/Yb and ‎La/Yb. ‎The Ba/Nb, Ba/Th and Th/Nb ratios presume a metasomatized mantle source ‎resulted from ‎the melting of upper crust sediments inherited from the subduction of ‎Neotethys ocean beneath ‎the Lut Block. ‎

چکیده انگلیسی:

منابع و مأخذ:


  1. Biot MA (1961) Theory of folding of stratified visco-elastic media and its implications in tectonics and orogenesis, Geological Society of America Bulletin 72: 1595-1620.
    2.
  2. Brandes C, Tanner DC (2017) Fault-related folding: A review of kinematic models and their application. Earth-Science Reviews 138: 352–370.
    3.
  3. Bulnes M, Poblet J (1999) Estimating the detachment depth in cross sections involving detachment folds. Geol. Mag. 136 (4): 395-412.
    4.
  4. Carruba S, Perotti CR, Buonaguro R, Calabro´ R, Carpi R, Naini M (2006) Structural pattern of the Zagros foldand- thrust belt in the Dezful Embayment (SW Iran): Styles of continental contraction: Geological Society of America Special Paper, 414: 11–32.
    5.
  5. Chamberlin RT (1910) The Appalachian folds of central Pennsylvania. Journal of Geology18: 228–51.
    6.
  6. Chamberlin  RT (1919) The building of the Colorado Rockies. Journal of Geology 27:225–251.
    7.
  7. Contreras J, Suter, M (1990) Kinematic modeling of cross-sectional deformation sequences by computer simulation. Journal of Geophysical Research 95: 21913-21929.
    8.
  8. Contreras J, Suter, M (1997) A kinematic model for the formation of duplex systems with a perfectly planar roof thrust. Journal of Structural Geology 19: 269-278.
    9.
  9. Contreras J (2010) A model for low amplitude detachment folding and syntectonic stratigraphy based on the conservation of mass equation. Journal of Structural Geology 32: 566-579.
    10.
  10. Daëron M, Avouac JP, Charreau J (2007). Modeling the shortening history of a fault tip fold using structural and geomorphic records of deformation. Journal of Geophysical Research 112, B03S13.
    11.
  11. Davis DM, Engelder T (1985) The role of salt in fold-and-thrust belts. Tectonophysics, 119(1): 67-88.
    12.
  12. Derikvand B, Alavi SA, Abdollahie Fard I, Hajialibeigi H (2018) Folding style of the Dezful Embayment of Zagros Belt: Signatures of detachment horizons, deep-rooted faulting and syn-deformation deposition. Marine and Petroleum Geology 91: 501–518.
    13.
  13. Epard JL, Groshong RH (1993) Excess area and depth to detachment. American Association of Petroleum Geologists 77: 1291-1302.
    14.
  14. Epard JL, Groshong RH (1995) Kinematic model of detachment folding including limb rotation, fixed hinges and layer-parallel strain. Tectonophysics 247, 85-103.
    15.
  15. Hardy S (1995) A method for quantifying the kinematics of fault-bend folding. Journal of Structural Geology 17: 1785-1788.
    16.
  16. Hardy S, Connors CD (2006) Short note: a velocity description of shear fault-bend folding. Journal of Structural Geology 28: 536-543.
    17.
  17. Homza TX, Wallace WK (1995) Geometric and kinematic models for detachment folds with fixed and variable detachment depths. Journal of Structural Geology 17: 575-88.
    18.
  18. Jamison WR (1987) Geometric analysis of fold development in overthrust terranes. Journal of Structural Geology 9: 207-219.
    19.
  19. Mitra S (1990) Fault-propagation folds: geometry, kinematic evolution, and hydrocarbon traps. American Association of Petroleum Geologists 74.
    20.
  20. Mitra S (2003) A unified kinematic model for the evolution of detachment folds. Journal of Structural Geology, 25(10): 1659-1673.
    21.
  21. Nemcok M, Schamel S, Gayer R (2005) Thrust belts Structural Architecture, Thermal Regimes, and Petroleum Systems. Cambridge University Press, New York.
    22.
  22. NIOC (National Iranian Oil Company) (2016) Geological Reports, Final Well Reports, Well Logs Reports, Reservoir Geological Reports, Maps, Geological and Geophysical Report: Internal Reports.
    23.
  23. O’Brien CAE (1957) Salt Diapirism in south Persia. Geologie en Mijnbouw 19: 357-376.
    24.
  24. Poblet J, McClay K (1996) Geometry and kinematics of single-layer detachment folds. American Association of Petroleum Geologists, 80(7): 1085-1109.
    25.
  25. Poblet J, Bulnes M, McClay K, Hardy S (2004) Plots of crestal structural relief and fold area versus shortening a graphical technique to unravel the kinematics of thrust-related folds. In: McClay, K. (Ed.), Thrust Tectonics and Hydrocarbon Systems. AAPG Memoir 82. The American Association of Petroleum Geologists, Tulsa, 372-399.
    26.
  26. Sherkati S, Molinaro M, Frizon de Lamotte D, Letouzey J (2005) Detachment folding in the Central and Eastern Zagros fold-belt (Iran): salt mobility, multiple detachments and late basement control Journal of Structural Geology. 27 (9): 1680-1696.
    27.
  27. Sherkati S, Letouzey J, Frizon de Lamotte D (2006) Central Zagros fold‐thrust belt (Iran): New insights from seismic data, field observation, and sandbox modeling. Tectonics, 25, TC4007.
    28.
  28. Soleimany B, Poblet J, Bulnes M, Sabat F (2011) Fold amplification history unravelled from growth strata: The Dorood anticline, NW Persian Gulf. J. Geol. Soc. 168: 219-234.
    29.
  29. Soleimany B, Nalpas T, Sabat F (2013) Multidetachment analogue models of fold reactivation in transpression: the NW Persian Gulf. Geol. Acta 11 (3): 265-276.
    30.
  30. Storti F, Salvini F, McClay K (1997) Fault-related folding in sandbox analogue models of thrust wedges. Journal of Structural Geology 19: 583-602.
    31.
  31. Suppe J (1983) Geometry and kinematics of fault-bend folding. American Journal of science, 283(7): 684-721.
    32.
  32. Suppe J (1985) Principles of Structural Geology. Prentice-Hall, Englewood Cliffs.
    33.
  33. Suppe J, Medwedeff DA (1990) Geometry and kinematics of fault-propagation folding. Eclogae Geol. Helvetiae 83: 409–454.
    34.
  34. Suppe J, Connors CD, Zhang Y (2004) Shear fault-bend folding. In: McClay, K.R. (Ed.), Thrust Tectonics and Hydrocarbon Systems. American Association of Petroleum Geologists Memoir82. The American Association of Petroleum Geologists, Tulsa, 303-323.
    35.
  35. Vergés J, Burbank DW, Meigs A (1996) Unfolding: an inverse approach to fold kinematics. Geology 24: 175-178.
    36.
  36. Vergés J, Goodarzi MH, Emami H, Karpuz R, Efstathiou J, Gillespie P (2009) Multiple detachment folding in Pusht-e Kuh arc, Zagros: Role of mechanical stratigraphy. In: McClay, K., Shaw J and Suppe J (eds) Thrust Fault-related Folding. American Association of Petroleum Geologists Memoirs, 94: 1–26.
    37.
  37. Zehnder AT, Allmendinger RW (2000) Velocity field for the trishear model. Journal of Structural Geology 22: 1009-1014.
    38.

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