Abstract
The rocks of the Oligocene Asmari Formation represent the outer ridges surrounding Jabal Hafit anticline. The carbonate beds of this formation dip gently under the northern and western sides of Al-Ain city. The beds are dissected by several sets of joints and characterized by the abundance of the connected caves of different sizes, particularly in the thick chalky beds. In this study, petrographic and mineralogical studies by X-ray diffraction analysis and scanning electron microscope revealed that the examined carbonate rock samples are made up mainly of calcite and minor of authigenic dolomite and quartz minerals. The 87Sr/86Sr data obtained from the 8 fossils of Asmari Formation range between 0.707989 and 0.707835. The age of the analyzed rocks was estimated from the 87Sr/86Sr values that suggest a range from approximately 29.6 to 33.5 my (late Rupelian stage of the Oligocene).
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References
Ministry of Petroleum and Mineral Resources.: Hunting Geology and Geophysics Limited: Report on a Mineral Survey of the U.A.E., Al-Ain Area, pp. 1–29. Ministry of Petroleum and Mineral Resources, Abu Dhabi (1979)
Cherif O., El Deeb W.: The Middle Eocene-Oligocene of the Northern Hafit area, South of Al-Ain City (United Arab Emirates). Geol. Mediterr. 11, 207–217 (1984)
Hamdan A.R.A., Bahr S.: Lithostratigraphy of the Paleocene succession of northern Jabal Hafit, Al Ain area, United Arab Emirates. M.E.R.C. Ain Shams Univ., Earth Sci. Ser. 6, 201–224 (1992)
Anan H.S., Bahr S.A., Bassiouni M.A., Boukhary M.A., Hamdan A.: Contribution to Early Eocene-Oligocene biostratigraphy of Jabal Hafit succession, United Arab Emirates. M.E.R.C. Ain Shams Univ., Earth Sci. Ser. 6, 225–247 (1992)
Gameil, M.; Aly, M.F.: Paleontological studies on some Oligocene colonial corals from Jabal Hafit (Al Ain area, UAE).- M.E.R.C. Ain Shams Univ., Earth Sci. Ser. 15, 156–183 (2001)
Boukhary M., Abdelghany O., Hussein-Kamel Y., Bahr S., Alsayigh A., Abdelraouf M.: Oligocene larger foraminifera from the United Arab Emirates, the Sultanate of Oman and NW Desert, Egypt. Hist. Biol. 22(1), 1–19 (2010)
Noweir M.A.: Back-thrust origin of the Hafit structure, Northern Oman Mountain Front, United Arab Emirates. GeoArabia 5, 215–228 (2000)
Warrak M.: Origin of the Hafit structure: implication for timing the Tertiary deformation in the northern Oman Mountains. J. Struct. Geol. 18, 803–818 (1996)
Ali Y.M., Sirat M., Small J.: Geophysical investigation of Al Jaww plain, eastern Abu Dhabi: implications for structure and evolution of the frontal fold belts of Oman Mountains. GeoArabia 13, 91–118 (2008)
Boukhary M., Abdeen M.M., Alsharhan A.S.: Stratigraphical setting and structural evolution of Jebel Malaqet, Northern Oman Mountain, United Arab Emirates. Neues Jahrb. Geol. Paleontol. Abh. 8, 477–497 (2003)
James G.A., Wynd J.G.: Stratigraphic nomenclature of Iranian consortium agreement area. A.A.P.G. Bull. 49(12), 2182–2245 (1965)
McArthur J.M.: Recent trends in strontium isotope stratigraphy. Terra Nova 6, 331–358 (1994)
Bailey T.R., McArthur J.M., Prince H., Thirlwall M.F.: Dissolution methods for strontium isotope stratigraphy: whole rock analyses. Chem. Geol. 167, 313–319 (2000)
McArthur J.M., Howarth R.J., Bailey T.R.: Strontium isotope stratigraphy: LOWESS version 3: best fit to the marine Sr-isotope curve for 0–509 Ma and accompanying look-up table for deriving numerical age. J Geol 109, 155–170 (2001)
McArthur J.M., Howarth R.J.: Sr-isotope Stratigraphy. In: Gradstein, F., Ogg, J., Smith, A.G. (eds.) A geological time scale, pp. 96–105. Cambridge University Press, Cambridge (2004)
Abdelghany O.: Biostratigraphy (Turborotalia cunialensis/ Cribrohantkenina inflata Concurrent-Range Zone, P16) of the Late Eocene Dammam Formation, west of the Northern Oman Mountains. Micropaleontology 48, 209–221 (2002)
Folk, R.L.: Practical classification of limestone, vol. 43, pp. 1–38. American Association of Petroleum Geologists Bulletin, Tulsa (1959)
Folk R.L.: Subdivision of limestone types. In: Ham, W.E. (ed.) Classification of Carbonate Rocks, vol.1, pp. 62–84. American Association of Petroleum Geologists Bulletin, Memoir (1962)
Dunham R.J.: Classification of carbonate rocks according to depositional texture. In: Ham, W.E. (ed.) Classification of Carbonate, pp. 108–121. American Association of Petroleum Geologists Bulletin, Tulsa (1962)
Acknowledgments
This study was financially supported by the Research Affairs (RA) at the UAE University (03-05-2-IV 09). The authors would like to thank the UAE University-RA for financial support. Sincere thanks to Prof. Ala Aldahan from the UAE University for chemical analyses.
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El Tokhi, M., Arman, H., Abdelghany, O. et al. Isotope Stratigraphy of Oligocene Limestone in Al-Ain City, United Arab Emirates. Arab J Sci Eng 37, 1439–1449 (2012). https://doi.org/10.1007/s13369-012-0253-y
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DOI: https://doi.org/10.1007/s13369-012-0253-y