Microfacies Evaluation of Kurra Chine Formation (Late Triassic) and Scenario of Depositional Basin Development in Northern and North Western Iraq
The present study focuses on the evaluation for microfacies of Kurra Chine Formation (Late Triassic) in four oil wells: Jabal Kand (Kd-1), Ain Zalah (AZ-29), Butmah (Bm-15) and Alan (Aa-2). The formation is consisting of alternation of dark brown and black limestones, dolomite, anhydrite and ribbons of shale. Ten carbonate microfacies are distinguished based on fauna content, lithology, and texture as well as anhydrite and shale facies. The results of all microfacies and lithofacies, the Kurra Chine Formation was deposited under wide spectrum of depositional environments within carbonate ramp setting. Inner ramp deposits are more common in the formation's successions in Ain Zalah and Alan wells. While middle and outer ramp deposits are clearly showing in Butmah and Jabal Kand wells, as well as inner ramp deposits. According to unconformity surfaces, successions of formation were divided into three stratigraphic units, started in late Triassic (Early Carnian) age and ended in Early Jurassic. Thickness of these units are various in sections study which is caused by the differentiation of tectonic evidence and rate of subsidence.
Bellen, V.R.C., Dunnington, H.V., Wetzel, R. and Morton, D.M., (1959): Lexique Stratigraphique International, Central National Deal Recherches Scientifique, III, Asia, Fascicule, 10a, Paris, 333 P.
Numan, N. M., (1997): A plate tectonic scenario for the Phanerozoic succession in Iraq, Iraqi Geological Journal, Vol. 30, No. 2,
pp. 85 – 110.
Ziegler, M.A., (2001): Late Permian to Holocene Paleofacies Evolution of the Arabian Plate and its Hydrocarbon Occurrences, GeoArabia, Vol.6, No. 3, pp.445-504.
Jassim S. Z., Buday, T., Cicha, I. and Prouza, V., (2006): Late Permian-Liassic Megasequence AP6, In : Jassim, S. Z. and Goff, J.C.(eds.), Geology of Iraq, Published by Dolin, Prague and Moravian Museum, Brno, pp. 124 – 144.
Golonka, J., (2007): Late Triassic and Early Jurassic palaeogeography of the world, Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 244, pp. 297 -307.
Muttoni, G., Gaelani, M., Kent, D.V., Sciunnach, D., Angiolini, L., Berra, F., Garzanti, E., Mattei, M. and Zanchi, A., (2009): Opening of the Neo-Tethys Ocean and the Pangea B to Pangea A transformation during the Permian, GeoArabia, Vol.14, No. 4, pp. 17-48.
Almutury, W.Gh. and Al-Asadi, M.M., (2008): Tectonostratigraphic History of Mesopotamian Passive Margin during Mesozoic and Cenozoic, South Iraq, Journal of Kirkuk University – Scientific Studies,Vol.3, No.1, pp. 31-50.
Aqrawi, A. A. M., Goff, J. C., Horbury, A. D. and Sadooni, F. N., (2010): The Petroleum Geology of Iraq, Scientific Press, UK, 424 P.
Abd Alwahab, N.S., (2013): Basin Analysis of Paleozoic Succession, Iraq, Ph.D. Thesis, University of Mosul, 234P.
العلي، مسعود مرعي هايس (2004): تطور الحافة القارية العربية الخاملة، المدلولات التركيبية والطباقية، اطروحة دكتوراه غير منشوره، كلية العلوم، جامعة الموصل، 198 صفحة.
Jassim, S. Z. and Buday, T. (2006) : Tectonic Framework, In : Jassim, S. Z. and Goff, J. C. (eds.), Geology of Iraq, Published by Dolin, Prague and Moravian Museum, Brno, pp. 45–55.
Sharland, P. R., Archer, R., Casey, D. M., Davies, R.B., Hall, S.H., Heward, A. P., Horbury, A. D. and Simmons, M. D., (2001): Arabian Plate Sequence Stratigrpahy, GeoArabia, Special Publication 2, Gulf Petrolik. Manama, Bahrain, 371 P.
Fox, J.E. and Ahlbrandt, T.S., (2001): Petroleum Geology and Total Petroleum Systems of the Widyan Basin and Interior Platform of Saudi Arabia and Iraq. U.S.Geological Survey Bull., in: http://geology.cr.usgs.gov/pub/bulletins/b2202-e.
Dunham, R.J., (1962) Classification of Carbonate Rocks According to Depositional Texture: In Ham, W.E.,(eds.) Classification of Carbonate Rocks, A symposium. AAPG. Bull. Publisher, Memoir 1. Tulasa Oklahoma, pp.108-121.
Embry, A.F. and Klovan, J.E, (1971): A Late Devonian Reef Tract on Northeastern Banks Island. N.W.T.- Bull. Canada Petr. Geol., V. 19, pp. 730-781.
Flügel, E., (2004): Microfacies of Carbonate Rocks, Analysis, Interpretation and Application. Springer-Verlag, Berlin, 976 P.
Tucker, M.E., and Wright, V. P., (1991): Carbonate Sedimentology, Blackwell Science Press.482 P.
Kendall, A.C., (1984): Evaporite, In: Walker, R.G., (eds): Facies Models, (2nd ed.), Geoscience Canada, pp 259-296.
Lucia, F. J., (2007): Carbonate Reservoir Characterization, An Integrated Approach, (2nd ed.), Springer-Verlag Berlin Heidelberg, 336 P.
Burchette, T.P. and Wright, V.P., (1992): Carbonate Ramp Deposional Systems, Sedimentary Geology, Vol.79, pp. 3-57.
Pomar, L., (2001): Types of Carbonate Platforms: A Genetic Approach. Basin Research, 33: 313-334.
Pomar, L. and Kendall, C.G., (2008): Architecture of Carbonate Platforms: A Response to Hydrodynamics and Evolving Ecology, SEPM Special Publication, No.89, pp 187-216.
Tomas,S., Zitzmann,M., Homann,M., Rumpf,M., Amour,F., Benisek,M., Mutti, M. and Betzler, C., (2009): From Ramp to Platform: Building a 3D Model of Depositional Geometries and Facies Architectures in Transitional Carbonates in The Miocene, Northern Sardinia, Facies, 16P.
BP (British Petroleum) and Idemitsu,(1990): Basin analysis and prospectively (NW Iraq). Regional geology and Stratrigraphy Final draft, London, Vol.1.
Catuneanu, O., (2006): Principles of Sequence Stratigraphy, Elsevier , Amsterdam,., 375P.
Lucic,D., Koch,G., Forsek,G., Maretic,S., Boromisa,E.B., Krizmanic,K., Spanic,D., Mesic,I. and Bubnic,J.,(2008): Lithofacies, Palynofacies, and Organic Facies of Triassic Evaporitic – Carbonate Succession: Examples From Croatian Offshore and Syrian Onshore Wells, Evaporite Abstracts, 2004 and 2006 Conferences, United Arab Emirates, GeoArabia, Vol.13, No.2. Abstract.
Warren, J.K. and Kendall, C.G.St., (1985): Comparison of Sequences Formed in Marine Sabkha (Subaerial) and Salina (Subaqueous) Settings – Modern and Ancient, AABG., Bull., Vol.69, No.6, pp 1013-1023.
Warren, J.K, (2006): Evaporites: Sediments, Resources and Hydrocarbons, Springer, Germany, 1035P.
Schreiber, B.C. and El Tabakh, M., (2000): Deposition and Early Alteration of Evaporites, Sedimentology, Vol.47, No.1, pp 215-238.
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