Volume 26, Issue 3 (10-2018)                   www.ijcm.ir 2018, 26(3): 567-580 | Back to browse issues page


XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Rahmani F, Noghreyan M, Mackizadeh M. Petrogenetic implications of mineral chemistry of the mantle diopsidites in the eastern part of the Sabzevar ophiolite (northeastern of Central Iran). www.ijcm.ir 2018; 26 (3) :567-580
URL: http://ijcm.ir/article-1-1141-en.html
1- University of Isfahan
Abstract:   (2396 Views)
In the eastern part of the Sabzevar ophiolite, southeast of Soleymanieh, there are white to pale greenish veins of diopsidite with 1–15 cm width inside mantle serpentinized harzburgites. The center of these veins is rather homogeneous and includes a monomineralic clinopyroxen with granular texture. The contact between the pure clinopyroxene and its host peridotite is always progressive and characterised by replacement textures and minerals. The host harzburgite has also been affected by diopsidization. There are patches of cores grain altered plagioclase and clinopyroxen with inclusions of serpentine in the host harzburgite. The mineral assemblage, field relationships and mineral chemistry of the mantle diopsidites in the eastern part of the Sabzevar ophiolite indicate that they are product of circulation of very high temperature hydrothermal fluids (550–900 °C) rich in Si, Ca, Mg, CO42, SO42 and Cl in the upper mantle. These fluids leached plagioclase rich lithologies before penetrating the mantle.
Full-Text [PDF 120 kb]   (766 Downloads)    
Type of Study: Research | Subject: Special

References
1. 1] Crane K., Aikman F., Foucher J.P., "The distribution of geothermal fields along the East Pacific Rise from 13°10′ N to 8°20′ N: implications for deep seated origins", Marine Geophysical Research 9 (1988) 211–236. [DOI:10.1007/BF00309974]
2. [2] Fouquet Y., Auclair G., Cambon P., Etoubleau J., "Geological setting and mineralogical and geochemical investigations on sulfide deposits near 13° N on the East Pacific Rise", Marine Geology 84 (1988) 145–178. [DOI:10.1016/0025-3227(88)90098-9]
3. [3] Nehlig P., Juteau T., "Deep crustal seawater penetration and circulation at ocean ridges: evidence from the Oman Ophiolite", Marine Geology 84 (1988) 209–228. [DOI:10.1016/0025-3227(88)90102-8]
4. [4] Vanko D.A., Laverne C., "Hydrothermal anorthitization of plagioclase within the magmatic/hydrothermal transition at mid-ocean ridges: examples from deep sheeted dikes (Hole 504B, Costa Rica Rift) and a sheeted dike root zone (Oman ophiolite)", Earth and Planetary Science Letters 162 (1998) 27–43. [DOI:10.1016/S0012-821X(98)00155-1]
5. [5] Python M., Ceuleneer G., Ishida Y., Barrat J.A., Arai S., "Oman diopsidites: A new lithology diagnostic of very high temperature hydrothermal circulation in mantle peridotite below oceanic spreading centres", Earth and Planetary Science Letters 255 (2007) 289–305. [DOI:10.1016/j.epsl.2006.12.030]
6. [6] Python M., Yoshikawa M., Shibata T., Arai S., "Diopsidites and rodingites: Serpentinisation and Ca-Metasomatism in the Oman ophiolite mantle", In Srivastava, R. K., (Ed.), Dyke Swarms: Keys for Geodynamic Interpretation, Springer, Berlin, Heidelberg (2011) 401–435. [DOI:10.1007/978-3-642-12496-9_23]
7. [7] Akizawa N., Arai S., Tamura A., Uesugi J., Python M., "Crustal diopsidites from the northern Oman ophiolite: Evidence for hydrothermal circulation through suboceanic Moho", Journal of Mineralogical and Petrological Sciences 106 (2011) 261–266. [DOI:10.2465/jmps.110621b]
8. [8] Akizawa N., Arai S., "Petrology of mantle diopsidite from Wadi Fizh, northern Oman ophiolite: Cr and REE mobility by hydrothermal solution", Island Arc 23 (2014) 312–323. [DOI:10.1111/iar.12074]
9. [9] Arai S., Akizawa N., "Precipitation and dissolution of chromite by hydrothermal solutions in the Oman ophiolite: new behavior of Cr and chromite", American Mineralogist 99 (2014) 28–34. [DOI:10.2138/am.2014.4473]
10. [10] Torabi G., Arai S., Morishita T., Tamura A., "Mantle hornblendites of Naein ophiolite (Central Iran): Evidence of deep high temperature hydrothermal metasomatism in an upper mantle section", Petrology 25, 1 )2017( 114–137.
11. [11] McCollom T.M., Shock E.L., "Fluid–rock interactions in the lower oceanic crust: thermodynamic models of hydrothermal alteration", Journal of Geophysical Research 103, B1 )1998( 547–575.
12. [12] Droop G.T., "A general equation for estimating Fe3+ concentrations in ferromagnesian silicates and oxides from microprobe analyses, Using stoichiometric criteria", Mineralogical Magazine 51 (1987) 431-435. [DOI:10.1180/minmag.1987.051.361.10]
13. [13] Whitney D.L., Evans B.W., "Abbreviations for names of rock-forming minerals", American Mineralogist 95) 2010) 185-187.
14. [14] Govindaraju K., "Compilation of working values and sample description for 383 geostandards", Geostandards Newsletter XVIII, Special Issue (1994) 1-158. [DOI:10.1046/j.1365-2494.1998.53202081.x-i1]
15. [15] Lensch G., "Major element geochemistry of the ophiolites in northeastern Iran", In: Panayotou A., (Ed.), Ophiolites: Proceedings of the International ophiolite Symposium Cyprus, Nicosia, Cyprus, Geological Survey Department (1980) 398–401.
16. [16] Förster H., "Mesozoic–Cenozoic metallogenesis in Iran", Journal of Geological Society London 135 (1984) 443–455. [DOI:10.1144/gsjgs.135.4.0443]
17. [17] Sengor A.M.C., "A new model for the late Paleozoic–Mesozoic tectonic evolution of Iran and implications for Oman", In: Robertson A.H.F., Searle M.P., Ries A.C., (Eds.), The Geology and Tectonics of the Oman Region, Geological Society of London, Special Publication 49 (1990) 797–831.
18. [18] Soffel H.C., Förster H.G., "Polar wander path of the Central-East- Iran Microplate including new results", Neues Jahrbuch Fur Mineralogie Montshefte 168 (1984) 165–172.
19. [19] Shirdashtzadeh N., "Petrology of pillow lavas and amphibolites; and metamorphism in mantle peridotites of Nain and Ashin ophiolites", PhD Thesis, University of Isfahan (2014) 378p (In Persian).
20. [20] Nasrabady M., "Petrology of metamorphic rocks of ophiolitic belt from northern Sabzevar", PhD Thesis, Tarbiat Moallem University (2009) 244p (In Persian).
21. [21] Bagheri S., Stampfli G.M., "The Anarak, Jandaq and Posht-e-Badam metamorphic complex in Central Iran: New geological data, relationships and tectonic implications", Tectonophysics 451 (2008) 123-155. [DOI:10.1016/j.tecto.2007.11.047]
22. [22] Fotoohi Rad G.R., Droop G.T.R., Burges, R., "Early Cretaceous exhumation of high-pressure metamorphic rocks of the Sistan Suture Zone, Eastern Iran", Geological Journal 44 (2009) 104-116. [DOI:10.1002/gj.1135]
23. [23] Shafaii Moghadam H., Whitechurch H., Rahgoshay M., Monsef I., "Significance of Nain-Baft ophiolitic belt (Iran): Short-lived, transtensional Cretaceous back-arc oceanic basins over the Tethyan subduction zone", Comptes Rendus Geoscience 49 (2009) 261-270.
24. [24] Shojaat B., Hassanipak A.A., Mobasher K., Ghazi A.M., "Petrology, geochemistry and tectonics of the Sabzevar ophiolite, North Central Iran", Journal of Asian Earth Sciences 21 (2003) 1053-1067. [DOI:10.1016/S1367-9120(02)00143-8]
25. [25] Stampfli G.M. Borel G.D., "A plate tectonic model for the Paleozoic and Mesozoic constrained by dynamic plate boundaries and restored synthetic oceanic isochrones", Earth and Planetary Science Letters 196 (2002) 17-33. [DOI:10.1016/S0012-821X(01)00588-X]
26. [26] Shafaii Moghadam H., Corfu F., Chiaradia M., Stern R.J., Ghorbani G., "Sabzevar Ophiolite, NE Iran: Progress from embryonic oceanic lithosphere into magmatic arc constrained by new isotopic and geochemical data", Lithos 210–211 (2014) 224–241. [DOI:10.1016/j.lithos.2014.10.004]
27. [27] Shafaii Moghadam H., Corfu F., Stern R.J., "U-Pb zircon ages of Late Cretaceous Nain-Dehshir ophiolites, central Iran", Journal of the Geological Society 170 (2013) 175-184. [DOI:10.1144/jgs2012-066]
28. [28] Shafaii Moghadam H., Zaki Khedr M., Arai S., Stern R.J., Ghorbani G., Tamura A., Ottley C.J., "Arc-related harzburgite–dunite–chromitite complexes in the mantle section of the Sabzevar ophiolite, Iran: A model for formation of podiform chromitites", Gondwana Research 27 (2015) 575-593. [DOI:10.1016/j.gr.2013.09.007]
29. [29] Majidi J., "Sabzevar 1:100,000 Geological Map and Report", Geological Survey and Mining Exploration of Iran (1999).
30. [30] Behroodi A., Omrauni G.," Forumad 1:100,000 Geological Map", Geological Survey and Mining Exploration of Iran (1999).
31. [31] Python M., Ceuleneer G., "Nature and distribution of dykes and related melt migration structures in the mantle section of the Oman ophiolite", Geochemistry Geophysics Geosystem 4, 7 (2003) 8612.
32. [32] Sun S.S., McDonough W.F., "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, Geological Society of London, Special Publications 42 (1989) 313-345.
33. [33] Lieftink D. J., Nijland T. G., Maijer, C., "The behavior of rare-earth elements in high-temperature Cl-bearing aqueous fluids: Results from the Ødegårdens verk natural laboratory", Canadian Mineralogist 32 (1994) 149–58.
34. [34] Trommsdorff V., Connolly J.A.D., "Constraints on phase diagram topology for the system CaO-MgO-SiO-CO-HO", Contributions to Mineralogy and Petrology 104 (1990) 1–7. [DOI:10.1007/BF00310641]
35. [35] Akizawa N., Tamura A., Fukushi K., Yamamoto J., Mizukami T., Python M., Arai S., "High-temperature hydrothermal activities around suboceanic Moho: An example from diopsidite and anorthosite in Wadi Fizh, Oman ophiolite", Lithos (2016). http://dx.doi.org/10.1016/j.lithos.2016.07.012 [DOI:10.1016/j.lithos.2016.07.012]
36. [36] German C.R., Lin J., "The thermal structure of the oceanic crust, ridge-spreading and hydrothermal circulation: How well do we understand their inter-connections", In: German C.R., Lin J., Parson L.M. (Eds.), Mid-ocean ridge: Hydrothermal interactions between the lithosphere and oceans, Geophysical Monograph Series 148, American Geophysical ::union::, Washington DC, USA (2004) 1–18.

Add your comments about this article : Your username or Email:
CAPTCHA

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2024 CC BY-NC 4.0 | Iranian Journal of Crystallography and Mineralogy

Designed & Developed by : Yektaweb