Writers : Rafighdoust,Yasaman; Moussavi Harami, Reza; Adabi, Mohamad Hossein; Mahboubi,Asadollah
Refference : The first international applied geological congress; Department of geology Islamic azad university- Mashhad
Publishing Year : 2010

Abstract :

The upper Jurassic (kimmeridgian-Tithanian) Mozduran Formation in the kopet-dagh basin mainly composed of carbonate racks intercalated with silisiclastic and evaporite sediments. In Center of kopet dagh, Mozduran Formation has been divided in to five portions that mainly composed of calcilutite, dolomite, dolomitic limestone, shale and sandstone, based on lithostratigraphic evidence. The purpose of this article is to compare carbonate geochemistry of the central and eastern of kopet dagh basin. Determination of original carbonate based on petrography is not so clear because aragonite and high Mg calcite turn to low Mg calcite during diagenetic processes. In present study major and trace elements and carbon and oxygen isotope values are used to determine the original carbonate mineralogy, paleotemperature and diagenetic trend of Mozduran Formation carbonate rocks. Major and trace elements and oxygen and carbon isotopes data in carbonate sequence of Mozduran Formatin indicate a burial diagenesis. The paleotemperature of marine water during deposition of Mozduran Formation was around 19.6c. The geochemical signatures also indicate that original carbonate mineralogy of the carbonate rocks was mixed aragonite-calcite mineralogy.
Finally, obtained date indicate that the primary mineralogy of the carbonate rocks of the central basin shows similar characteristics with those in eastern part of the studies basin.

Subject List : Geochemical data