@Article{, title={Mineralogical & Petrographic Microfacies Study of the Zahraa formation (Pliocene– Pleistocene) in Sawa Lake Surrounding area- IRAQ}, author={Saleh A. Lazam}, journal={Muthanna Journal of Pure Science (MJPS) مجلة المثنى للعلوم الصرفة}, volume={4}, number={1}, pages={11-20}, year={2017}, abstract={Mineralogical, Petorographic Microfacies study has been done on (16) samples of Zahraa formation (Pliocene –Pleistocene) of outcrop in Surrounded Sawa Lake area. The mineralogical study showed that Calcite is the main mineral withinthe rock formation, whereas the upper rocks of Zahraa Formation consist silty or sandy claystone is dominant in the middle andthe upper portion, in addition to quartz, clay minerals, iron oxide and organic matter as insoluble residues. From thin sectionsstudy, Three main microfacies have been identified which are: Charophyte shelly bioclastic wackestone, Charophyte shellybioclastic dolowackestone and Algal wackestone. Based on microfacies study and its fossils content, it has been possible todetermine the depositional environment of Zahraa Formation which deposits in the area of the presence of Charaphytes,indicates fresh water environment. From the depositioal situation and the large extension in the project area, the type of freshwater environment is ephemeral freshen water lakes.

} }