Document Type : Research Paper
Authors
1 Department of Geology, College of Science, University of Tikrit,Tikrit,iraq
2 Department of Applied Geology, College of Science, University of Anbar, Anbar ,Iraq;
3 Department of Geology, College of Science, University of Tikrit, Tikrit ,Iraq;
Abstract
The current study including microfacies analysis and depositional environment aspects of (10) rock samples from Euphrates Formation in outcrop location is at Al-Baghdadi city, with a thickness of this formation 19 meters, It is consists of gray, hard, porous, weathered, Peloidal, and dolomitic limestone. The layer of basal Conglomerate with a thickness of about 6 meters in the study outcrop, which consists of calcareous Conglomerate of different sizes, indicates a stratigraphic unconformity, which is the contact between the Miocene and Oligocene formations. The age of this formation is lower Miocene. The formation within this section is rich in benthic foraminifera and other types of fossils such as corals, echinoderms, and pelecypoda. In this study, determine three main types of microfacies were distinguished in this Formation, namely: peloidal lime grainstone, lime wackstone, dolostone. By studying the microfacies types and abundance of benthic foraminifera and other species, the depositional environment of Euphrates Formation was deduced, which represents a restricted marine.
Keywords
Main Subjects
- Al-Dabbas M, Awadh S.M, Zaid A.A (2013).Mineralogy, geochemistry, and reserve estimation of the Euphrates limestone for Portland cement industry at Al-Najaf area, South Iraq. Aran J Geosci 6(2):491-503. Brandle, J.E. and Telmer, P.G. (2007). Steviol glycoside biosynthesis. Phytochemistry 68,1855–1863.
- Al-Ghreri, M.F (2016). Benthic Foraminifera biostratigraphy of the Euphrates Formation (Early Lower Miocene– Middle Miocene) in selected sections, Western Iraq. Iraqi Journal of Science .56(1B):424-434.
- Al-Ghrire, M.F.(2007). Biostratigraphic succession of the formation of Euphrates valley between Hit and Al-Qayim in Iraq , PhD thesis, University of Baghdad, Iraq. 121 p.
- Al-Mutwali M., and Al-Rubai H. A. (2021). Geological history , Ichnofacies and Sequence Stratigraphy of the Eocene – Oligocene Boundary at Sinjar Area , Northwestern Iraq . Iraqi National Journal of Earth Sciences 21 (1) :27 – 45.
- Al-Nuaimy Q. A. M.(2018) :Morphometric analysis of chattian- Early Aquitanian Miogypsinidae from Iraq and their stratigraphic distribution in the Arabian Tethys . Arabian Journal of Geosciences 10:542, 2-17.
- Ameen A. , Fattah A. I. , and Qader B. O. (2020). Microfacies and depositional environment of Upper Oligocene and lower Miocene successions from Iraqi Kurdistan Region . Kuwait Journal of Sciences. 47 (4).
- Fouad, S.F. (2015) '' Western Zagros fold-thrust belt, part II: the high folded zone'', Iraqi Bulletin of Geology and Mining (6): 53-71.
- Geel , T. (2000). Recognition of stratigraphic sequences in carbonate platform and slope deposies : empirical models based on microfacies analysis of Palaeogene deposits in southeastern Spain, Palaeogeography ,Palaeoclimatology, Palaeoecology 155: 211-238.
- Ghosh , A. M. (2002) . Cenozoic coralline algal assemblage from southwestern kutch and its importance in palaeoenvironment and Current science, Vol. 83 , No.2 ,pp.153-158.
- Flugel, E. (1982). Microfacies analysis of limestones. Translated by K. Christenson . springer , Berlin , 633 p.
- Flugel, (2010). Microfacies of carbonate rocks: analysis, interpretation and application, 2nd ed. Springer , Berlin 929 p.
- Jassim ,S. Z. ,and Goff , J.C. (2006). Geology of Dolin and Moravian museum , prague , 341.
- Mahammed, M. H. , and Nasser , M. E. (2018). Facies Analysis and Geological Modelling of Euphrates formation in Ajeel Oil Field , Northern Iraq. Iraqi Journal of Science :2065-2079.
- Qader, F. M. , and Ali, S. M.(2022) Reservoir Characteristics of the Lower Miocene Carbonate Formation in Kor Mor Gasfield, Kirkuk Area, NE Iraq. Tikrit Journal of Pure Science, 27(3): 43-52.
- Wilson , J. L. (1975). Carbonate facies in Geological history. Springer, NewYork , 471 p.
- Lazam, S.A. (2019): Petrography Study of the Euphrates Formation (Early Miocene) in Muthanna Area, Southern Desert, Iraq. Indian Journal of Natural Sciences. Vol.9 /Issue 52.
- Sadi Kan Jan, (2009) : Microfacies Study of Hadiene formation (North Iraq). Iraq Natural History Museum, University of Baghdad, Bab Al-Muadham, Baghdad. (2009)Vol.10No.(4):pp 49-58.
)
