Halite fluid inclusion geochemistry of evaporite deposits in central Iran

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dc.contributor.authorShariatinia, Zen_AU
dc.contributor.authorCendón, DIen_AU
dc.contributor.authorPueyo, JJen_AU
dc.contributor.authorRahimpour-Bonab, Hen_AU
dc.contributor.authorHezarhani, Aen_AU
dc.date.accessioned2009-12-08T23:34:44Zen_AU
dc.date.accessioned2010-04-30T04:56:47Zen_AU
dc.date.available2009-12-08T23:34:44Zen_AU
dc.date.available2010-04-30T04:56:47Zen_AU
dc.date.issued2007-07en_AU
dc.date.statistics2007-07en_AU
dc.description.abstractThe chemical analyses of major ions in primary halite fluid inclusions is widely used for the determination and characterization of brine chemistry and its evolution in ancient evaporite basins through the Phanerozoic (eg. Ayora et al., 2001; Brennan and Lowenstein, 2002; Horita et al., 2002; Kovalevich et al., 2002). The purpose of this study is to show the major ion compositional evolution and halite crystallization pathway in the Miocene, M1 member of the Upper Red Fm. (N, Great Kavir Basin, Iran). We show how the Rift setting of the Great Kavir Basin, exerted the main control on the modification of seawater major ion chemistry. Influx of Ca-Cl2 brines modified the earlier evaporated seawater into Ca- Mg- Na- Cl brines. In this case, the Ca2+ concentration of the evolving brine exceeded overall concentrations of SO42-, HCO3-, and CO32- ions, which is expressed as mCa2+>Σ(mSO42- + mHCO3- + mCO32-). From this modified brine MgSO4-poor potash salts (mainly halite, sylvite and carnallite) precipitated. The study of major ion variation for evaporite deposits in the mentioned area reveals that the evaporation path in the Great Kavir Basin was not the same as present-day seawater. The geochemical diagrams (e.g. Mg vs. SO4 and K) show that major ions followed different evolution trends. Seemingly, an externally Ca-Cl2 influx would have overridden the chemical signature of evaporated seawater within Great Kavir Basin. As a result, sylvite instead of K-Mg-sulfates precipitated, similar to that observed in other rift settings such as the Danakil Depression (Ethiopia) in Quaternary evaporates where secular seawater compositional changes can not justified the observed lithologies. Ayora C., Cendn D. I., Taberner C., and Pueyo J. J. (2001) Brine-mineral reactions in evaporite basins: Implications for the composition of ancient oceans. Geology 29(3), 251-254. Brennan S. T. and Lowenstein T. K. (2002) The major-ion composition of Silurian seawater. Geochimica et Cosmochimica Acta 66(15), 2683-2700. Horita J., Zimmermann H., and Holland H. D. (2002) Chemical evolution of seawater during the Phanerozoic: Impliations from the record of marine evaporites. Geochimica et Cosmochimica Acta 66(21), 3733-3756. Kovalevich V. M., Peryt T. M., Beer W., Geluk M., and Halas S. (2002) Geochemistry of Early Triassic seawater as indicated by study of Rt halite in the Netherlands, Germany and Poland. Chemical Geology 182, 549-563.en_AU
dc.description.sponsorshipInternational Union of Geodesy and Geophysics (IUGG); International Association of Seismology and Physics of the Earth's Interior (IASPEI)en_AU
dc.description.urihttp://iugg.org/archive/iugg2007perugia/www.iugg2007perugia.it/iuggProc/JS.pdfen_AU
dc.identifier.booktitleEarth: Our Changing Planet. Proceedings of IUGG XXIV General Assemblyen_AU
dc.identifier.citationShariatinia, Z., Cendón, D. I., Pueyo, J. J., Rahimpour-Bonab, H., & Hezarhani, A. (2007). Halite fluid inclusion geochemistry of evaporite deposits in central Iran. Poster presented to the IUGG XXIV2007 General Assembly – “Earth: Our Changing Planet”, 2nd – 13th July 2007. In L. Ubertini, P. Manciola, S. Casadei, & S. Grimaldi (Eds.), Earth: Our Changing Planet. Proceedings of IUGG XXIV General Assembly, (pp. 1727). Perugia, Italy: University of Perugia.en_AU
dc.identifier.conferenceenddate13 July 2007en_AU
dc.identifier.conferencenameIUGG XXIV2007 General Assembly – “Earth: Our Changing Planet”en_AU
dc.identifier.conferenceplacePerugia, Italyen_AU
dc.identifier.conferencestartdate2 July 2007en_AU
dc.identifier.editorsL. Ubertini, P. Manciola, S. Casadei, & S. Grimaldien_AU
dc.identifier.govdoc1023en_AU
dc.identifier.isbn9788895852254en_AU
dc.identifier.pagination1727en_AU
dc.identifier.placeofpublicationPerugia, Italyen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2670en_AU
dc.identifier.urihttp://iugg.org/archive/iugg2007perugia/www.iugg2007perugia.it/iuggBuls/ScientificProgram1st.pdfen_AU
dc.language.isoenen_AU
dc.publisherInternational Union of Geodesy and Geophysics (IUGG)en_AU
dc.subjectHaliteen_AU
dc.subjectIranen_AU
dc.subjectGeochemistryen_AU
dc.subjectEvaporitesen_AU
dc.subjectFluidsen_AU
dc.subjectInclusionsen_AU
dc.titleHalite fluid inclusion geochemistry of evaporite deposits in central Iranen_AU
dc.typeConference Posteren_AU
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