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Lithogeochemistry of Fatha Formation in Selected Setions-Northenr Iraq | ||
| basrah journal of science | ||
| Article 1, Volume 27, Issue 1, 2009, Pages 40-69 PDF (0 K) | ||
| Author | ||
| Kayis Mohammed Al-Bayati and Abdul-Mutalib Hasson Al-Marsoumi | ||
| Abstract | ||
| A total of 52 samples collected from marl, limestone and gypsum lithological units of Fat'ha Formation (Middle Miocene). These samples were firstly chemically analysed for; SiO2, Al2O3, TiO2 ,CaO, MgO, Na2O, K2O, Fe2O3, SO3, Mn, Co, Ni. Pb, Zn, and Cu, then mineralgically analyzed via x-ray technique. Insoluble contents were also determined. Mineralogical investigation showed the mineral assemblages are as follow; gypsum, calcite and dolomite, feldspar, and quartz. Clay minerals composed of illite, palygorskite, kaolinite, chlorite, montmorillonite, and chlorite-montmorillonite mixed layered in variable proportions. Distribution of minor elements in Fat'ha lithological units are govern by their geochemical affinitites and mineralogy. The main diagenetic processes affecting the studied rocks were found to be anhydrite hydration, recrystallization and dolomitization. Moreover , diagenetic processes lead to changing the major and trace elements concentration due to remobilization of these elements during that processes. The vertical distribution pattern of clay minerals suggests fluctuation in the salinity and detrital supply of terrigenous materials throughout the deposition of Fat'ha Formation | ||
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