Mineralogy, geochemistry and geotectonic of plagiogranites from Shahre-Babak ophiolite, Zagros zone, Iran

Fatemeh Sepidbar; Hassan Mirnejad

doi:10.1007/s12583-016-0668-6

Volume 27 Issue 3

Jun 2016

Turn off MathJax

Article Contents

Journal of Earth Science > 2016 > 27(3): 507-518.

Fatemeh Sepidbar, Hassan Mirnejad. Mineralogy, geochemistry and geotectonic of plagiogranites from Shahre-Babak ophiolite, Zagros zone, Iran. Journal of Earth Science, 2016, 27(3): 507-518. doi: 10.1007/s12583-016-0668-6

Citation:

Fatemeh Sepidbar, Hassan Mirnejad. Mineralogy, geochemistry and geotectonic of plagiogranites from Shahre-Babak ophiolite, Zagros zone, Iran. Journal of Earth Science, 2016, 27(3): 507-518. doi: 10.1007/s12583-016-0668-6

Citation:

PDF( 1083 KB)

Mineralogy, geochemistry and geotectonic of plagiogranites from Shahre-Babak ophiolite, Zagros zone, Iran

doi: 10.1007/s12583-016-0668-6

Fatemeh Sepidbar^{1
,
,},
Hassan Mirnejad^{1, 2}

1.
Department of Geology, University of Tehran, Tehran 14155-64155, Iran
2.
Department of Earth and Environmental Earth Sciences, Miami University, Ohio 45056, USA

More Information

Corresponding author: Fatemeh Sepidbar, f.sepidbar@ut.ac.ir
Received Date: 11 Jun 2015
Accepted Date: 12 Dec 2015
Publish Date: 10 Jun 2016

Abstract

Abstract

Shahre-Babak ophiolite is a part of the inner Zagros ophiolite belt in Iran. Major parts of intrusive masses of Share-Babak ophiolite are gabbro and plagiogranite. The SiO₂ versus Na₂O+K₂O diagram shows that the palgiogranites are related to calk-alkaline series. Rare earth elements exhibit relatively similar pattern that indicates these rocks are syngenetic. Also, REE patterns display an enrichment of LREE compared to HREE, and are characterized by flat to slightly concaveup patterns from Gd to Yb. Such patterns contrast sharply with those of plagiogranites in more complete ophiolite sequences, such as the Semail ophiolite, Oman, or the Troodos ophiolite, Cyprus, and Neyriz, where patterns are much flatter and slightly LREE-depleted. The slightly LREE-enriched patterns of the Shahre-Babak plagiogranites support a partial melting origin for them. The low TiO₂, Nb, Ta content and high LREE concentrations of the Shahre-Babak plagiogranites indicate that the rocks were likely derived from the anatexis of amphibolites, which were related to hydrothermal alteration of gabbros in intra-oceanic back-arc basin.
- plagiogranite,
- back-arc basin,
- Share-Babak ophiolite,
- Neo-Tethys,
- Iran

FullText(HTML)

References(54)

References

Ahmadipour, H., Rostamizadeh, G. 2012. Geochemical Aspects of Na-Metasomatism in Sargaz Granitic Intrusion (South of Kerman Province, Iran). Journal of Sciences, Islamic Republic of Iran, 23: 45-58 http://www.researchgate.net/publication/286338973_Geochemical_aspects_of_Na-metasomatism_in_Sargaz_granitic_intrusion_South_of_Kerman_Province_Iran

Alavi, M., Vaziri, H., Seyed-Emami, K., et al., 1997. The Triassic and Associated Rocks of the Nakhlak and Aghdarband Areas in Central and Northeastern Iran as Remnants of the Southern Turanian Active Continental Margin. Geological Society of America Bulletin, 109(12): 1563-1575. doi:10.1130/0016-7606(1997)109<1563:ttaaro>2.3.co;2

Aldiss, D. T., 1981. Plagiogranites from the Ocean Crust and Ophiolites. Nature, 289(5798): 577-578. doi: 10.1038/289577a0

Alizadeh, E., Arvin, M., Dargahi, S., 2012. Geochemistry and Petrogenesis of Plagiogranites in the Neyriz Ophiolitic Sequence, Iran: Constraints on Their Origin. Journal of Petrology, 12: 1-14 (in Persian)

Allègre, C. J., Minster, J. F., 1978. Quantitative Models of Trace Element Behavior in Magmatic Processes. Earth and Planetary Science Letters, 38(1): 1-25. doi: 10.1016/0012-821x(78)90123-1

Arth, J. G., 1976. Behavior of Trace Elements during Magmatic Processes--A Summary of Theoretical Models and Their Applications. J. Res. US Geol. Surv., 4: 41-47 http://www.researchgate.net/publication/241956554_behavior_of_trace_elements_during_magmatic_processes_a_summary_of_theoretical_models_and_their_applications

Babaie, H. A., Babaei, A., Ghazi, A. M., et al., 2006. Geochemical, ⁴⁰Ar/³⁹Ar Age, and Isotopic Data for Crustal Rocks of the Neyriz Ophiolite, Iran. Canadian Journal of Earth Sciences, 43(1): 57-70. doi: 10.1139/e05-111

Bedard, J. H., 1999. Petrogenesis of Boninites from the Betts Cove Ophiolite, Newfoundland, Canada: Identification of Subducted Source Components. Journal of Petrology, 40(12): 1853-1889. doi: 10.1093/petroj/40.12.1853

Berberian, M., King, G. C. P., 1981. Towards a Paleogeography and Tectonic Evolution of Iran. Canadian Journal of Earth Sciences, 18(2): 210-265 doi: 10.1139/e81-019

Berndt, J., Koepke, J., Holtz, F., 2005. An Experimental Investigation of the Influence of Water and Oxygen Fugacity on Differentiation of MORB at 200 MPa. Journal of Petrology, 46(1): 135-167. doi: 10.1093/petrology/egh066

Bézos, A., Humler, E., 2005. The Fe³⁺/ΣFe Ratios of MORB Glasses and Their Implications for Mantle Melting. Geochimica et Cosmochimica Acta, 69(3): 711-725. doi: 10.1016/j.gca.2004.07.026

Boomeri, M., Mizuta, T., Ishiyama, D., et al., 2006. Fluorine and Chlorine in Biotite from the Sarnwosar Granitic Rocks, Northeastern Iran. Iranian Journal of Science & Technology, Transaction A, 30(A1): 111-125 http://www.researchgate.net/publication/237279750_Fluorine_and_chlorine_in_biotite_from_the_sarnwosar_granitic_rocks_Northeastern_Iran

Boynton, W. V., 1984. Cosmochemistry of the Rare Earth Elements: Meteorite Studies. In: Henderson, P., ed., Rare Earth Element Geochemistry. Elsevier, Amsterdam. 63-114

Christie, D. M., Carmichael, I. S. E., Langmuir, C. H., 1986. Oxidation States of Mid-Ocean Ridge Basalt Glasses. Earth and Planetary Science Letters, 79(3/4): 397-411. doi: 10.1016/0012-821x(86)90195-0

Coleman, R. G., Donato, M., 1979. Oceanic Plagiogranite Revisited. Trondhjemites, Dacites, and Related Rocks. Elsevier, Amsterdam. 149-167

Coleman, R. G., Peterman, Z. E., 1975. Oceanic Plagiogranite. Journal of Geophysical Research, 80(8): 1099-1108. doi: 10.1029/jb080i008p01099

Dilek, Y., Furnes, H., 2011. Ophiolite Genesis and Global Tectonics: Geochemical and Tectonic Fingerprinting of Ancient Oceanic Lithosphere. Geological Society of America Bulletin, 123(3/4): 387-411. doi: 10.1130/b30446.1

Dixon, S., Rutherford, M. J., 1979. Plagiogranites as Late-Stage Immiscible Liquids in Ophiolite and Mid-Ocean Ridge Suites: An Experimental Study. Earth and Planetary Science Letters, 45(1): 45-60. doi: 10.1016/0012-821x(79)90106-7

Flagler, P. A., Spray, J. G., 1991. Generation of Plagiogranite by Amphibolite Anatexis in Oceanic Shear Zones. Geology, 19(1): 70-73. doi:10.1130/0091-7613(1991)019<0070:gopbaa>2.3.co;2

Floyd, P. A., Yaliniz, M. K., Goncuoglu, M. C., 1998. Geochemistry and Petrogenesis of Intrusive and Extrusive Ophiolitic Plagiogranites, Central Anatolian Crystalline Complex, Turkey. Lithos, 42(3/4): 225-241. doi: 10.1016/s0024-4937(97)00044-3

Frost, B. R., Barnes, C. G., Collins, W. J., et al., 2001. A Geochemical Classification for Granitic Rocks. Journal of Petrology, 42(11): 2033-2048. doi: 10.1093/petrology/42.11.2033

Gerlach, D. C., Leeman, W. P., Lallemant, H. G. A., 1981. Petrology and Geochemistry of Plagiogranite in the Canyon Mountain Ophiolite, Oregon. Contributions to Mineralogy and Petrology, 77(1): 82-92. doi: 10.1007/bf01161505

Ghazi, A. M., Hassanipak, A. A., 2000. Petrology and Geochemistry of the Shahr-Babak Ophiolite, Central Iran. Geological Society of America Bulletin, Special Paper, 349: 485-497 http://www.researchgate.net/publication/285811741_Petrology_and_geochemistry_of_the_Shahr-Babak_ophiolite_Central_Iran

Golestani, M., 2013. Petrology, Geochemistry and Tectonic Setting Intrusive Massives of Baft Ophiolitic--Melange, Southeast of Kerman, Iran. Journal of Tethys, 3: 164-176

Grimes, C. B., John, B. E., Cheadle, M. J., et al., 2008. Protracted Construction of Gabbroic Crust at a Slow Spreading Ridge: Constraints from ²⁰⁶Pb/²³⁸U Zircon Ages from Atlantis Massif and IODP Hole U1309D (30°N, MAR). Geochemistry, Geophysics, Geosystems, 9(8): 1-24. doi: 10.1029/2008gc002063

Grimes, C. B., Ushikubo, T., Kozdon, R., et al., 2013. Perspectives on the Origin of Plagiogranite in Ophiolites from Oxygen Isotopes in Zircon. Lithos, 179: 48-66. doi: 10.1016/j.lithos.2013.07.026

Hanson, G. N., 1978. The Application of Trace Elements to the Petrogenesis of Igneous Rocks of Granitic Composition. Earth and Planetary Science Letters, 38(1): 26-43. doi: 10.1016/0012-821x(78)90124-3

Hawkesworth, C. J., Gallagher, K., Hergt, J. M., et al., 1993. Mantle and Slab Contributions in ARC Magmas. Annual Review of Earth and Planetary Sciences, 21(1): 175-204. doi: 10.1146/annurev.ea.21.050193.001135

Humphris, S. E., 1984. The Mobility of the Rare Earth Elements in the Crust. In: Henderson, P., ed., Rare Earth Element Geochemistry. Elsevier, Amsterdam. 317-342

Jiang, Y. H., Liao, S. Y., Yang, W. Z., et al., 2008. An Island Arc Origin of Plagiogranites at Oytag, Western Kunlun Orogen, Northwest China: SHRIMP Zircon U-Pb Chronology, Elemental and Sr-Nd-Hf Isotopic Geochemistry and Paleozoic Tectonic Implications. Lithos, 106(3/4): 323-335. doi: 10.1016/j.lithos.2008.08.004

Koepke, J., Berndt, J., Feig, S. T., et al., 2007. The Formation of SiO₂-Rich Melts within the Deep Oceanic Crust by Hydrous Partial Melting of Gabbros. Contrib. Miner. Petrol., 153: 67-84 doi: 10.1007/s00410-006-0135-y

Koepke, J., Feig, S. T., Snow, J., et al., 2004. Petrogenesis of Oceanic Plagiogranites by Partial Melting of Gabbros: An Experimental Study. Contributions to Mineralogy and Petrology, 146(4): 414-432. doi: 10.1007/s00410-003-0511-9

Li, X. H., Faure, M., Lin, W., et al., 2013. New Isotopic Constraints on Age and Magma Genesis of an Embryonic Oceanic Crust: The Chenaillet Ophiolite in the Western Alps. Lithos, 160/161: 283-291. doi: 10.1016/j.lithos.2012.12.016

Lippard, S. J., Shelton, A. W., Gass, I. G., 1986. The Ophiolite of Northern Oman. Geological Society of London Memoir. Blackwell Scientific Publications, Oxford. 11: 178

Ludden, J. N., Thompson, G., 1979. An Evaluation of the Behavior of the Rare Earth Elements during the Weathering of Sea-Floor Basalt. Earth and Planetary Science Letters, 43(1): 85-92. doi: 10.1016/0012-821x(79)90157-2

Malpas, J., 1979. Two Contrasting Trondhjemite Associations from Transported Ophiolites in Western Newfoundland: Initial Report. Developments in Petrology, 9: 465-487. doi: 10.1016/b978-0-444-41765-7.50020-4

Martin, H., Smithies, R. H., Rapp, R., et al., 2005. An Overview of Adakite, Tonalite-Trondhjemite-Granodiorite (TTG), and Sanukitoid: Relationships and Some Implications for Crustal Evolution. Lithos, 79(1/2): 1-24. doi: 10.1016/j.lithos.2004.04.048

Meffre, S., Aitchison, J. C., Crawford, A. J., 1996. Geochemical Evolution and Tectonic Significance of Boninites and Tholeiites from the Koh Ophiolite, New Caledonia. Tectonics, 15(1): 67-83. doi: 10.1029/95tc02316

Mirnejad, H., Lalonde, A. E., Obbeid, M., et al., 2013. Geochemistry and Petrogenesis of Mashhad Granitoid: An Insight into the Geodynamic History of Paleo-Tethys in Northeast of Iran. Lithos, 170: 105-116. http://www.sciencedirect.com/science/article/pii/S0024493713000911

Nakamura, N., 1974. Determination of REE, Ba, Fe, Mg, Na and K in Carbonaceous and Ordinary Chondrites. Geochimica et Cosmochimica Acta, 38(5): 757-775. doi: 10.1016/0016-7037(74)90149-5

O'Connor, J. T., 1965. A Classification for Quartz-Rich Igneous Rock Based upon Feldspar Ratios. U.S.G.S. Professional Paper, 525B: B79-B84

Pearce, J. A., 1983. Role of the Sub-Continental Lithospher in Magma Genesis at Active Continental Margin. In: Hawkesworth, C. J., Norry, M. J., eds., Continental Basalts and and Mantle Xenolitehs. Shiva, Nantwich. 230-249

Pearce, J. A., Norry, M. J., 1979. Petrogenetic Implications of Ti, Zr, Y, and Nb Variations in Volcanic Rocks. Contributions to Mineralogy and Petrology, 69(1): 33-47. doi: 10.1007/bf00375192

Pedersen, R. B., Malpas, J., 1984. The Origin of Oceanic Plagiogranites from the Karmoy Ophiolite, Western Norway. Contributions to Mineralogy and Petrology, 88(1/2): 36-52. doi: 10.1007/bf00371410

Rajabzadeh, M. A., Dehkordi, T. N., Caran, Ş., 2013. Mineralogy, Geochemistry and Geotectonic Significance of Mantle Peridotites with High-Cr Chromitites in the Neyriz Ophiolite from the Outer Zagros Ophiolite Belts, Iran. Journal of African Earth Sciences, 78: 1-15. doi: 10.1016/j.jafrearsci.2012.09.013

Shafaii Moghadam, H., Stern, R. J., Chiaradia, M., et al., 2013. Geochemistry and Tectonic Evolution of the Late Cretaceous Gogher-Baft Ophiolite, Central Iran. Lithos, 168-169: 33-47. doi: 10.1016/j.lithos.2013.01.013

Shafaii Moghadam, H., Whitechurch, H., Rahgoshay, M., et al., 2009. Significance of Nain-Baft Ophiolitic Belt (Iran): Short-Lived, Transtensional Cretaceous Back-Arc Oceanic Basins over the Tethyan Subduction Zone. Comptes Rendus Geoscience, 341(12): 1016-1028. doi: 10.1016/j.crte.2009.06.011

Snyder, D., Carmichael, I. S. E., Wiebe, R. A., 1993. Experimental Study of Liquid Evolution in an Fe-Rich, Layered Mafic Intrusion: Constraints of Fe-Ti Oxide Precipitation on the T-f_O₂ and T-ƍ Paths of Tholeiitic Magmas. Contributions to Mineralogy and Petrology, 113(1): 73-86. doi: 10.1007/bf00320832

Tilton, G. R., Hopson, C. A., Wright, J. E., 1981. Uranium-Lead Isotopic Ages of the Samail Ophiolite, Oman, with Applications to Tethyan Ocean Ridge Tectonics. Journal of Geophysical Research: Solid Earth, 86(B4): 2763-2775. doi: 10.1029/jb086ib04p02763

Toplis, M. J., Carroll, M. R., 1995. An Experimental Study of the Influence of Oxygen Fugacity on Fe-Ti Oxide Stability, Phase Relations, and Mineral--Melt Equilibria in Ferro-Basaltic Systems. Journal of Petrology, 36(5): 1137-1170. doi: 10.1093/petrology/36.5.1137

Walker, R., Jackson, J., 2002. Offset and Evolution of the Gowk Fault, S.E. Iran: A Major Intra-Continental Strike-Slip System. Journal of Structural Geology, 24(11): 1677-1698. doi: 10.1016/s0191-8141(01)00170-5

Xu, J. F., Castillo, P. R., Chen, F. R., et al., 2003. Geochemistry of Late Paleozoic Mafic Igneous Rocks from the Kuerti Area, Xinjiang, Northwest China: Implications for Backarc Mantle Evolution. Chemical Geology, 193(1/2): 137-154. doi: 10.1016/s0009-2541(02)00265-6

Zeng, L. J., Niu, H. C., Bao, Z. W., et al., 2015. Petrogenesis and Tectonic Significance of the Plagiogranites in the Zhaheba Ophiolite, Eastern Junggar Orogen, Xinjiang, China. Journal of Asian Earth Sciences, 113: 137-150. doi: 10.1016/j.jseaes.2014.09.031

Relative Articles

Supplements(0)

Cited By

Proportional views