Systematics and paleoenvironment of the Late Oligocene (Chattian) age ostracods from South Tafresh, Urumieh -Dokhtar Zone

Authors

Department of Geology, Sciences Faculty, Lorestan University, Khorram Abad, Iran

Abstract

A stratigraphic section was selected in East Garkan in order to study the paleontology of the Qom Formation ostracods in Urumieh -Dokhtar Zone. In this section, Qom Formation is gradually located on the clastic rocks of the Lower Red Formation and with disconformity under the Upper Red Formation. A total of 10 species of 14 ostracods genera were identified. The common stratigraphic range of these ostracods and the presence of accompanying foraminifera confirm the Late Oligocene (Chattin) age for the desired layers. The ostracod and foraminiferal assemblage from the studied section shows that the Qom Formation has accumulated in a warm and oxygen-rich environment. Based on the study of 60 samples found from the studied section, two sedimentary environments of the estuary (including alluvial channels, barrier; central basin and intertidal) and shelf (including inner, middle and outer shelf) were identified. The ostracods are spread in the middle of the side bay and the outer ramp.

Keywords

References

Abd- Elshafy,  E., El- Fawal , F.M., Ismail, A.S., Matta, Y.E., 2007. Biostratigraphy of the Latest Paleocene- Eocene ostracoda from Wadi Matulla District, West Central, Sinai, Egypt, Proceeding of the 8th Conference, Geology of Sinai for Development, Ismailia,  pp.127-151.
 Ahmad, M., Neale, J.W., Siddiqui, Q.A., 1991. Tertiary Ostracoda from the Lindi area, Tanzania. Bulletin of the British Museum (Natural History). Geology 46, 175–270.
Bassi, D., Hottinger, L. Nebelsick, H., 2007. Larger Foraminifera from the Upper Oligocene of the Venetian area, northeast Italy .Palaeontology 5, 845-868.
Bozorgnia, F., 1961. Micropaleontological Investigation of Qom Formation in NW Central Iran. National Iranian Oil Company. Paleontological Report 79, 32 p.
Bou Dagher-Fadel, M.K., 2008. Evolution and Geological Significance of Larger Bentic Foraminifera. Elsevier, 544 p.
Brestenskí, E., Jirícek, R., 1978. Ostrakoden des Badenicn der Zentralen Paratethys, In: Brestenskí, E. (Ed.), Chronostratigrdphie und Neostratotypen Miozàn der Zentralen Paratethys. Bratislava 6, pp 405–439.
Burchette, T.P., Wright, V.P., 1992. Carbonate ramp depositional systems. Sedmentary Geology 79, 3–57.
Ceolin, D., Fauth, G., Coimbra, J. C., 2011. Cretaceous–Lower Paleogene ostracods from the Pelotas Basin, Brazil, Palaeobiodiversity and Palaeoenvironments. International Journal of Palaeontology and Stratigraphy 91, 111-128.
Cosovic, V., Drobne, K., Moro, A., 2004. Paleoenviornmental model for Eocene foraminferal Limstones of the Adriatic carbonare platform (Istrian Pennisula). Facies 50, 61–75.
Dunham, R.J., 1962. Classification of carbonate rocks according to depositional texture: American Association of Petroleum Geologists Memoir 1, 108-121.
Danesheian, J., Ramezani Dana, L., 2005. Some Ostracoda from the Qom Formation of the North of Centeral Iran, in: 15th International Symposium on Ostracoda, Berlin, pp. 12- 15.
Dieci, G., Russo, A., 1964. Ostracodi tortoniani dell'Appennino settentrionale (Tortona, Montegibbio, Castelvetro). Bollettino Della Società Paleontologica Italiana 3, 38–88.
Ducasse, O., Cahuzac, B., 1997. Les ostracodes indicateurs des paléoenvironnements au Miocène moyen (Serravallien) en Aquitaine (Sud-Ouest de la France). Revue de Micropaléontologie 40, 141–166.
Geel, T., 2000. Recognition of stratigraphic sequence in carbonate platform and slope: empirical models based on microfacies analysis of Paloogene deposits in southeastern Spain. Palaeogeography. Palaeoclimatology. Palaeoecology 155, 211–238.
Hadavi, F., 2002. Study of Ostracoda and Lithology of Qom Formation in Douch section, 21th geosciences symposium, Geological Survey of Iran 49-46.
Hosseinipour, F., Vaziri, M. R., Hassani, M. J. 2010. Oligo - Miocene Ostracods and their Paleoecology fromn Bojan section (Sirjan). Sedimentary Facies 2, 163-172.
Faridi, Z., 1964. Investigation on ostracoda of the Qum Formation of the Karvansarasangy and the Nardaghi sections.  National Iranian Oil Company. Paleontology Note No. 107/2, 24.
Flügel, E., 2010. Microfacies of Carbonate Rocks, Analysis, Interpretation and Application. Berlin, Springer-Verlag, 976 p.
Gramann, F., 1971. Ostracoden aus Neogene und Quartar der Danakil-Senke (Nordost-Athiopien). Beihefte zum Geologischen Jahrbuch 106, 109–142.
Grosdidier, E., Monteil, L., 1970. Sondage Moalleman n 1 etude des ostracodes. Entreprise de Recherches et d΄activités pétrolières, pp. 429.
Heap, D.A, Bryce1, S., Ryan, D.A., 2004.  Facies evolution of Holocene estuaries and deltas: a large-sample statistical study from Australia. Sedimentary Geology 168, 1 –17.
Khalaf, K., 1984. Middle Miocene Ostracoda from Northern Iraq. Department of Geology, University of Hull, Ph.D Thesis, pp. 356.
Khalaf, S.K., 1993. Some new Ostracoda species of the genera Cytherella and Cytherelloidea from the M. Miocene of North Iraq. Iraq Geological Journal 26, 175–195.
Krstic, N., 1979. Ostracods of the Lower Miocene in the area between Shams Abad and Rahniz, Iran. Annales géologiques des Pays helléniques 11, 673-69.
Khosla, S.C., 1978. Lower Miocene Ostracoda from Jamnagar and Porbandar Districts, Gujarat, India. Micropaleontology 24, 251–290.
Kollmann, K., 1960. Cytherideinae und Schulerideinae n. subfam. (Ostracoda) aus dem Neogen des östlichen Österreich. Mitteilungen der Geologischen Gesellschaft in Wien 51, 89–195.
Moore, R.C., 1961. Treatise on invertebrate paleontology, Part Q, Arthropoda; 3, Crustacea, Osteracoda. Geological. Society of America and University of Kansas, 422 p.
Miall, A.D., 2000. Principle of Sedimentary Basin Analysis. Springer- Verlag, New York, 668 p.
Morsi, A.M., Faris, M., Zalat, A.E., Salem, R., 2008. Maastrichtian-Early Eocene ostracodes from west-central Sinai, Egypt taxonomy, biostratigraphy, paleoecology and paleobiogeography. Revue de Paléobiologie 27, 159-189.
Morkhoven Van, F.P.C.M., 1963. Post-paleozoic Ostracoda. Their Morphology. Taxonomy and Economic Use. Elsevier Publishing Company, Amsterdam, 478 p.
Murray, J.W., 1991. Ecology and distribution of benthonic foraminifera. In: Lee, J.J., and Anderson, R.O., (eds.), Biology of Foraminifera. Academic Press, London, 221-284.
Pomar, L., 2001. Ecological control of sedimentary accomodation: evolution from a carbonate ramp to rimmed shelf, Upper Miocene, Balearic Islands. Palaeogeography, Palaeoclimatology, Palaeoecology 17, 249-272.
Pourmotamed, F., 1967. Study of Ostracoda and Lithology of Qom Formation in Dochah area. MSc. Thesis, University of Tehran.
Reinson, G.E., 1992. Transgressive barrier-island and estuarine systems: in RG Walker and NP James, eds., Facies Models: Response to sea-Level Changes. Gelogical Association of Canada, Geotext 1, pp.179-194.
Reuss, A. E., 1850. Die fossilen Entomostraceen des oesterreichischen Tertiaerbeckens. Naturhistorisches Museum Wien 3, 41–92.
Romero, J., Caus, E., Rossel, J., 2002. A model for the paleoenvironmental distribution of larger foraminifera based on late Middle Eocene deposits on the margin of the south Pyrenean basin (NE Spain). Palaeogeography Palaeoclimatology Palaeoecology 179, 43–56.
Ruggieri, G., 1962. Gli Ostracodi Marini del Tortoniano (Miocene medio-superiore) de Enna nella Sicilia orientale. Palaeontographia Italica 56, 1–68.
Stöcklin, J., 1971. Stratigraphic lexicon of Iran. Part I: Central, North and East Iran. Geological Survey of Iran, Report No. 18, 338p.
Swain, F.M., 1974. Some Upper Miocene and Pliocene (?) Ostracoda of Atlantic Coastal Region for Use in Hydrogeologic Studies, Geologiacal Survey  Professional Paper, U.S.A.
Torkzadeh Mahani, I., Vaziri, M.R., Dastanpour, M., Khosravi, Z, Hasani, M. J., 2011. Introduction of Early Miocene Ostracods and their paleoecology in Gefriz area (north of Baft) Kerman. Sedimentary Facies 3, 41–51.
Vaziri Moghaddam, H., Taheri, A., Kimiagari, M., 2011. Foraminifera index genera and paleoecology, Isfahan University, p. 366.
Van Den Bold, W.A., 1966. Ostracoda of the Brasso Formation of Trinidad. Micropaleontology 4, 391–418.
Watley, R., 1991. The Platycopid signal: a means of detecting kenoxic events using Ostracoda. Journal of
Micropaleontology 10,181-185.
Wilson, M.E.J., Vecsei, A., 2005. The apparent paradox of abundant foramol facies in low latitudes: their environmental significance and effect on platform development. Earth Sciences Review 69:  133–168.
Advanced Applied Geology
Volume 12, Issue 1
May 2022
Pages 177-191

Files

Share

How to cite

Statistics