Stratigraphy and lithology
| Article # 30_2023 | submitted on 03/20/2023 displayed on website on 08/18/2023 |
| 13 p. | Nilchi F., Postnikova О.V. |
| Microfacies and sedimentary environment of Ilam and Laffan Formations in Bangestan Mountain, Southwest of Iran | |
| *The article is presented in English. Ilam (Cenomanian-Santonian) and Laffan (Coniacian) Formations are part of the Bangestan Group, which are located between Gurpi Formation on the top and Sarvak Formation on the bottom. The Ilam Formation is considered one of the main hydrocarbon reservoirs of the Bangestan Group in the Southwest of Iran. In this study, Ilam and Laffan Formations have been investigated in two sections of Tang-e Ban and Tang-e Abolfares areas. The purpose of this study is to identify and determine the microfacies and sedimentary environment of Ilam and Laffan Formations. The petrographic studies and facies analysis in the Tang-e Ban and Tang-e Abolfares sections led to the identification of 9 microfacies types that were deposited in lagoon, shoal, and open sea environments, which were located in the inner, middle, and outer-ramp setting. Due to the type of microfacies studied in both sections, the absence of large barrier reef, slump structures, calciturbidite, oncoids and pisoids, could consider that this sequence has been deposited in a homoclinal carbonate ramp environment. Keywords: Ilam Formation, Laffan Formation, Bangestan Group, microfacies type, sedimentary environment, carbonate ramp, Southwest of Iran. |
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| article citation | Nilchi F., Postnikova О.V. Microfacies and sedimentary environment of Ilam and Laffan Formations in Bangestan Mountain, Southwest of Iran. Neftegazovaya Geologiya. Teoriya I Praktika, 2023, vol. 18, no. 3, available at: http://www.ngtp.ru/rub/2023/30_2023.html EDN: IOEMEC |
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Flügel E., Munnecke A. Microfacies of carbonate rocks: analysis, interpretation and application, Springer-Verlag, Berlin, 2010, 976 p.
Ghabeishavi A., Vaziri-Moghaddam H., Taheri A. Facies distribution and sequence stratigraphy of the Coniacian-Santonian succession of the Bangestan Palaeo-high in the Bangestan Anticline, SW Iran. Facies. 2009. 55(2). P. 243-257. DOI: 10.1007/s10347-008-0171-3
James G., Wynd J. Stratigraphic nomenclature of Iranian oil consortium agreement area. AAPG bulletin. 1965. V. 49(12). P. 2182-2245.
Khodaei N., Rezaee P., Honarmand J., Abdollahi-Fard I. Controls of depositional facies and diagenetic processes on reservoir quality of the Santonian carbonate sequences (Ilam Formation) in the Abadan Plain, Iran. Carbonates and Evaporites, 2021. P. 1-24. DOI: 10.1007/s13146-021-00676-y
Mehrabi H., Rahimpour-Bonab H., Enayati-Bidgoli A.H., Navidtalab A. Depositional environment and sequence stratigraphy of the Upper Cretaceous Ilam Formation in central and southern parts of the Dezful Embayment, SW Iran. Carbonates and Evaporites. 2013. V. 29. P. 263-278. DOI: 10.1007/s13146-013-0168-z
Moore C.H., Wade W.J. Carbonate Reservoirs: porosity and diagenesis in a sequence stratigraphic framework (Developments in Sedimentology, Vol. 67). Elsevier, 2013, 392 p.
Odin G.S., Matter A. De glauconiarum origine. Sandstone diagenesis: recent and ancient. 2003. P. 121-151.
Racki G. Ecology of the primitive charophyte algae; a critical review. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 1982. V. 162. P. 388-399.
Rahimpour‐Bonab H., Mehrabi H., Navidtalab A., Omidvar M., Enayati‐Bidgoli A.H., Sonei R., Izadi‐Mazidi E. Palaeo‐exposure surfaces in Cenomanian-Santonian carbonate reservoirs in the Dezful embayment, SW Iran. Journal of Petroleum Geology, 2013, 36(4). P. 335-362. DOI: 10.1111/jpg.12560
Scholle P.A., Ulmer-Scholle D.S. A color guide to the petrography of carbonate rocks: grains, textures, porosity, diagenesis, AAPG Memoir 77, 2003. 474 p.
Schulze F., Kuss J., Marzouk A. Platform configuration, microfacies and cyclicities of the Upper Albian to Turonian of westcentral Jordan. 2005. Facies 50. P. 505-527. DOI: 10.1007/s10347-004-0032-7
Wilson K.G. The renormalization group: Critical phenomena and the Kondo problem. Reviews of modern physics, 1975, 47(4). P. 773.