Sedimentology & Microfacies Study of the Nfayil formation in Southern Samawa, -IRAQ
DOI:
https://doi.org/10.48165/Keywords:
Petrography, Nfayil Formations, Samawa, Facies, Depositional EnvironmentAbstract
The petrographic study is based on 88 samples obtained from 18 surface sections. The aim of this study is to shed more light on the facies, and the environment deposition for Nfayil formation, which is results depositional environments are interpreted as categorized by Flugel (2004). Show restricted carination on marine platform, deposited in very shallow hypersalline lagoon, was deposited in shallow marine environment with normal salinity. The age of Nfayil Formation, depending on the fossils content (Peneroplisfarsensis, Ammonia beccarii, Elphidiumsp., Textulariasp., Miliolids, rotalids). The assemblage fauna above the typical is Middle Miocene which is equivalent to Fat`ha Formation.
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Al-Mubarak M. A. and Amin, R. M., 1983. Report on The Regional Geological Western Desert and The Western Part of The Southern Desert. GEOSURV, int. rep. no. 1380.
Bathurst, R.G.C., 1966. Boring algae, micritic envelopes and lithification of molluscanbiosparite. Geol. Jour. 5, p 15-32.
Bathurst, R.G.C., 1975. Carbonate sediments and their diageneses, Elsvier, Amsterdam, 658pp. 4. Bellen, R.C., Daunnigton, H.V., Wetzel, R. and Morton, D., 1959. Lexique Stratigraphic International, Asia, Face 10a, Iraq, Paris.
Buday, T., 1973. The Regional Geology of Iraq. GEOSURV, Manuscript Report. 6. Choquette,P.D. and Pray, L.C., 1970. Geological nomenclature and classification of -porosity in sedimentary carbonates: Bull. Am. Ass. Petro., Vol., 45, p. 207-250.
Degens, E. T., 1965. Geochemistry of sediments: Prentice Hall Inc.
Dunham, R.J., 1962. Classification of carbonate rocks according to depositional texture. In: Classification of carbonate Rocks (ED. by W.E. Ham). pp. 108-121. Mem. Am. Ass. Petrol. 9. Embry, A. F. & Klovan, J.E., 1971. A late Devonian reef tract on northeastern Banks Island, Northwest Territories. Bull. Can. Petro. Geolo. 19, p.730-781.
Flugel, E., 2004. Microfacies of carbonate rocks, Sprmger- Verlag Berlin Heideberg. 11. Friedman, G.M., 1959. Identification of carbonate minerals by staining methods. Jour. Sed. Petrology, v.29, p.87-97.
Folk, R.L., 1959. Practical petrographical classification of limestone: Amer. Assoc. Petro. Geol. Bull. No. 43/1, p. 1-38, 41figs, Tulsa.
Jassim, R.Z. and Al-Jiburi, B.S., 2O09. Stratigraphy, Special Issue, Geology of the Iraq Southern Desert, Iraqe Bulletin of Geology and Mining, p53-76.
Said, F.S., 1986.Paleontology, biostratigraphy and depositional environment of Anah area, in Fouad, S.F., et al., 1986. Detailed geological survey of Anah area. GEOSURV, int. rep. no. 1527. 15. Said, F.S., 1991.Biostratigraphy and depositional environment of Lower Oligocene-Middle
Miocene sediment of Heet - Kubaisa area (subsurface sections). GEOSURV, int. rep. no1967. 16. Sissakain, V.K. and Mohammed, B.S., 2007. Geology of Iraqi Western Desert (Stratigraphy). Iraqi Bull. Geol. Min., Special Issue, p51-124. No.1326.
Sissakain, V.K., Mahdi, A.I., Amin, R.M. and Salman, B., 1997. The Nfayil Formation, a new lithostratigraphic unit in the Western Desert of Iraq. Iraqi Geol. Jour., Vol. 30, no.1, p 61-65. 18. Sissakian, V. K., Youkhana, R. Y., and Zainal E. M., 1994. The Geology of Al-Bireet Quadrangle, Sheet NH – 38 – 1, Scale 1: 250 000. GEOSURV. Baghdad, Iraq.
Sissakain, V.K., Mahdi, A.I., Amin, R.M. and Salman, B., 1997. The Nfayil Formation, a new lithostratigraphic unit in the Western Desert of Iraq. Iraqi Geol. Jour., Vol. 30, no.1, p 61-65. 20. Sissakian V.K. and Deikran D.B., (1998), New Tectonic map of Iraq, scale 1:1000000. 21. Sissakian V.K. (1999) Series of Geological Report on the Exposed Formation In Iraq, The NfaiylFormation.