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The first report of the presence of High pressure metamorphic minerals in Kermanshah Ophiolite Complex. www.ijcm.ir 2018; 26 (2) :315-326
URL: http://ijcm.ir/article-1-1100-en.html
URL: http://ijcm.ir/article-1-1100-en.html
Abstract: (3179 Views)
The Kermanshah ophiolite Complex is located in the structural – tectonic zone of the western Iran in northern part of Zagros main thrust and is a part of highly dismembered Kermanshah – Panjvin ophiolite belt. The poly metamorphic zone in this region is mainly related to the development and tectonic emplacement of the ophiolite. Some of the metamorphic rocks (Jade and its simulants) have so hardness, density and high specific gravity, containing tremolite, actinolite, plagioclase, clinochlore, grossular and hydrogrossular garnet. Metamorphic rocks containing very condensed and compact tremolite and nephrite found in the area, as well as very compact antigoritic serpentinite so called bowenite, clearly proof that the high-pressure metamorphism took place during subduction. Serpentinites also appear in the region which is characterized by the predominance of antigorite and Cr-magnetite, as well as by their relatively low LOI (10.9-12.1 wt.%), corresponding to medium or high temperature blueschist facies metamorphism. These metamorphic conditions are strongly similar to the high-pressure metamorphic appearing in this serpentinites that formed from serpentinization of highly depleted harzburgitic protoliths where they were subjected to extensive partial melting processes (>15%), consistent with a hydrous subduction-related environment. Gabbros in this ophiolite complex have been altered rodingitization, the altered rodingitized gabbros, in the continuation were underwent a de-rodingitization process too.
Keywords: Nephrite, Jade, simulants of Jade, serpentinite, bowenite, high pressure metamorphism, subduction, Kermanshah Ophiolite.
References
1. [1] Miyashiro A., "Metamorphism and related magmatism in plate tectonics", American Journal of Science 272 (1974) 495-508.
2. [2] Aghanabati S. A., "Geology of Iran", A Publication of the Geological Survey of Iran (2007) 586pp. (in Persian).
3. [3] Stocklin J., "Possible ancient continental margins in Iran, In: C.A., Burk and C.L., Drake (Editores), the geology of continental margins", Springer-Verlag, Berlin (1974) 873-887. [DOI:10.1007/978-3-662-01141-6_64]
4. [4] Shafahii Moghadam H., Stern, R. J., "Late Cretaceouse fore arc ophiolites of Iran", Island Arc 20 (2011) 1-4. [DOI:10.1111/j.1440-1738.2010.00745.x]
5. [5] Braud J., "Les formation au Zagros dans la region de Kermanshah (Iran) et leurs rapports structuraux", Compt. Rend 271 (1970) 244-1291.
6. [6] Alavi M., "Tectonostratigraphic Evolution of Zagross side of Iran", Geology, 8 (1980) 144-149.
https://doi.org/10.1130/0091-7613(1980)8<144:TEOTZO>2.0.CO;2 [DOI:10.1130/0091-7613(1980)82.0.CO;2]
7. [7] Berberian M., King G. C. P., "Towards the Paleogeography and tectonic evolution of Iran", Canadian Journal of Earth Sciences, 18 (1981) 210-265. [DOI:10.1139/e81-019]
8. [8] Jolivet L., Faccenna, C., "Mediterranean extension and the Africa–Eurasia collision", Tectonics 19 (6) (2000) 1095–1106. [DOI:10.1029/2000TC900018]
9. [9] Agard P., Omrani J., Jolivet L., Mouthereau F., "Convergence history across Zagros (Iran): constraints from collisional and earlier deformation", International Journal of Earth Sciences 94 (3) (2005) 401–419. [DOI:10.1007/s00531-005-0481-4]
10. [10] Vincent S.J., Allen M.B., Ismail-Zadeh A.D., Flecker R., Foland K.A., Simmons M.D., "Insights from the Talysh of Azerbaijan into the Paleogene evolution of the South Caspian region", Geological Society of America Bulletin 117 (11–12) (2005) 1513–1533. [DOI:10.1130/B25690.1]
11. [11] Ballato P., Mulch A., Landgraf A., Strecker M.R., Dalconi M.C., Friedrich A., Tabatabaei S.H., "Middle to late Miocene Middle Eastern climate from stable oxygen and carbon isotope data, southern Alborz mountains, N Iran", Earth and Planetary Science Letters 300 (1–2) (2010) 125–138. [DOI:10.1016/j.epsl.2010.09.043]
12. [12] Berberian F., Berberian M., "Tectono-plutonic episodes in Iran. In: Delany, Frances M., Gupta, Harsh K. (Eds.), Zagros, Hindu Kush, Himalaya": Geodynamic Evolution, AGU, Washington, DC (1981) 5–32. [DOI:10.1029/GD003p0005]
13. [13] Şengör A.M.C., "A new model for the late Palaeozoic—Mesozoic tectonic evolution of Iran and implications for Oman", Geological Society, London, Special Publications 49 (1) (1990) 797–831. [DOI:10.1144/GSL.SP.1992.049.01.49]
14. [14] Stöcklin J., "Structural history and tectonics of Iran; a review", AAPG Bulletin 52 (7) (1968) 1229–1258.
15. [15] Ao S., Xiao W., Khalatbari Jafari M., Talebian M., Chen L., Wan B., Ji, W., Zhang Zh., "U-Pb zircon ages, field geology and geochemistry of the Kermanshah ophiolite (Iran): From continental rifting at 79 Ma to oceanic core complex at ca. 36 Ma in the southern Neo-Tethys", Gondwana Research 31 (2015) 1-14.
16. [16] Delaloye M., Desmons J., "Ophiolites and mélange terranes in Iran: a geochronological study and its paleotectonic implications", Tectonophysics 68 (1980) 83–111. [DOI:10.1016/0040-1951(80)90009-8]
17. [17] Ghazi A.M., Hassanipak A.A., "Geochemistry of subalkaline and alkaline extrusives from the Kermanshah ophiolite, Zagros Suture Zone, Western Iran: Implications for Tethyan plate tectonics", Asian Journal of Earth Sciences 17 (1999) 319-332. [DOI:10.1016/S0743-9547(98)00070-1]
18. [18] Torkian A., Daraee zadeh Z. Aliani F., "Application of geochemical data for determining tectonic setting of diabasic dykes in the Kermanshah ophiolite; Sahneh-Harsin area", Journal of Crystallography and mineralogy of Iran 21(2) (2012) 331-342 (in Persian).
19. [19] KarimiBavandpur A., "Geological map of Kermanshah 1:100000 scale", Geological survey of Iran (1999).
20. [20] Lippard S.J., Shelton A.W., Gass I.G., "The ophiolite of northern Oman", Geological Society, London, Memoir 11 (1986) 178P.
21. [21] Elyaszadeh R., Mohajjel M., Biralvand M., "Structure of the collision zone of Zagros orogen in northwest (NW) Iran", Quarterly Iranian Journal of Geology4 (16) (2010) 25-36.
22. [22] Amini S., Moradpour R., ZareiiSahamieh R., "Petrography, geochemistry and petrology of the South Sahneh Ophiolite Complex (NE Kermanshah)", Journal of Crystallography and mineralogy of Iran 13 (2): 225-246 (in Persian).
23. [23] Shahidi M., Nazari H., "Geological map of Harsin, 1/100.000 scale", Geological survey of Iran, Tehran, 1997.
24. [24] Schwartz S., Guillot S., Reynard B., Lafay R., Debret B., Nicollet C., Lanari P., Auzende A.L., "Pressure-temperature estimates of the lizardite/antigorite transition in high pressure serpentinites", Lithos 178 (2013) 197-210. [DOI:10.1016/j.lithos.2012.11.023]
25. [25] Lafay R., Deschamps F., Schwartz S., Guillot S., Godard M., Debret B., Nicollet C., "High pressure serpentinites, a trap-and-release system controlled by metamorphic conditions: Example from the Piedmont zone of the western Alps", Chemical Geology 343 (2013) 38-54. [DOI:10.1016/j.chemgeo.2013.02.008]
26. [26] Guillot S., Schwartz S., Reynard B., Agard P., Prigent C., "Tectonic significance of serpentinites", Tectonophysics 646 (2015) 1-19. [DOI:10.1016/j.tecto.2015.01.020]
27. [27] Snow J.E., Dick H.J.B., "Pervasive magnesium loss by marine weathering of peridotite", Geochimica et Cosmochimica Acta 59 (1995) 4219-4235. [DOI:10.1016/0016-7037(95)00239-V]
28. [28] Niu Y., "Bulk-rock major and trace element compositions of abyssal peridotites: implications for mantle melting, melt extraction and post-melting processes beneath mid-ocean ridges", Journal of Petrology 45 (2004) 2423-2458. [DOI:10.1093/petrology/egh068]
29. [29] Deschamps F., Godard M., Guillot S., Hattori K., "Geochemistry of subduction zone serpentinites: A review", Lithos 178 (2013) 96-127. [DOI:10.1016/j.lithos.2013.05.019]
30. [30] Zindler A., Hart S., "Chemical geodynamic", Annual Review of Earth and Planetary Sciences 14 (1986) 493-571. [DOI:10.1146/annurev.ea.14.050186.002425]
31. [31] Pearce, J.A., and Parkinson, I.J., "Trace element models for mantle melting: application to volcanic arc petrogenesis", in: Prichard H.M, Alabaster T., Harris N.B.W, and Neary C.R., eds. Magmatic Processes and Plate Tectonics: Geological Society London Special Publications 76 (1993), 373-403. [DOI:10.1144/GSL.SP.1993.076.01.19]
32. [32] Bodinier J.L., Godard M., "Orogenic, ophiolitic, and abyssal peridotites. Treatise on Geochemistry", Pergamon, Oxford (2007) pp. 1-73.
33. [33] Parkinson I.J., Pearce J.A., "Peridotites from the Izu - Bonin -Mariana forearc (ODP Leg 125): evidence for mantle melting and melt-mantle interaction in a supra-subduction zone setting", Journal of Petrology 39 (1998) 1577-1618. [DOI:10.1093/petroj/39.9.1577]
34. [34] Bucher K., Grapes R., "Petrogenesis of Metamorphic Rocks", Springer (2011) 428p. [DOI:10.1007/978-3-540-74169-5]
35. [35] Schandle E. S., O'Hanley D. S., Wicks F. J., "Rodingites in serpentinized ultramafic rocks of the Abitibi greenstone belt, Ontario", Canadian Mineralogist 27 (1989) 579 – 59.
36. [36] Coleman, R.G., "Ophiolites: Ancient Oceanic Lithosphere", Spinger-Verlag, New York (1977) 229. [DOI:10.1007/978-3-642-66673-5]
37. [37] Frost B.R., Beard J.S., "On silica activity and serpentinization", Journal of Petrology 48 (2007) 1351-1368. [DOI:10.1093/petrology/egm021]
38. [38] Bach W., Klein F., "The petrology of seafloor rodingites: insights from geochemical reaction path modeling", Lithos 112 (2009) 103-117. [DOI:10.1016/j.lithos.2008.10.022]
39. [39] O'Hanley D.S., Schandl E.S., Wicks F.J., "The origin of rodingites from Cassiar, British Columbia, and their use to estimate T and P (H2O) during serpentinization", Geochimica et Cosmochimica Acta 56 (1992) 97-108. [DOI:10.1016/0016-7037(92)90119-4]
40. [40] O'Hanley D.S., "Serpentinites: Records of Tectonic and Petrological History", Oxford University Press, New York (1996).
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