Abstract
The recently discovered carbonate–siliciclastic intervals within an upper Cenozoic synorogenic conglomeratic succession in the Shalamzar area of the Zagros sedimentary basin in central western Iran contain abundant and diverse assemblages of foraminifera. A total of 32 genera and 34 species of benthic and five genera and eight species of planktic foraminifera representative of Burdigalian age were identified. The foraminifera are classified into four morph groups of: (A) planktic, (B) deep benthic, (C) large benthic (robust hyaline, imperforate agglutinated and porcelaneous foraminifera) and (D) other benthic foraminifera. An outer shelf zone is represented by dominance of planktic and small benthic foraminifera of the morph groups A and B. An inner–middle shelf is indicated by an association of dominant morpho group C and minor morpho group D. Also, a mixed biotic assemblage of abundant morpho group D and sparse morpho group C reflects an inner shelf zone. Based on the biodiversities and morpho groups, the foraminifera were inhabitants of a dysoxic–oxic marine paleoecosystem between ca <40 and >120 m depth with low-to-moderate to high water energy in a euphotic to oligophotic zone. Moreover, normal seawater salinity to slightly hypersaline conditions (34 to slightly more than 50 psu) is reflected by the morpho groups.
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References
Adams TD, Bourgeois F (1967) Asmari biostratigraphy. Iranian Oil Operating Companies, Geological and Exploration Division, IOOC Report, no. 1074 (unpublished)
Barattolo F, Bassim D, Romero R (2007) Upper Eocene larger foraminiferal––coralline algal facies from the Klokova Mountain (south continental Greece). Facies 53:361–375
Berberian M, King GCP (1981) Towards a paleogeography and tectonic evolution of Iran. Can J Earth Sci 18:210–265
Boudagher-Fadel MK (2008) Evolution and geological significance of larger Benthic Foraminifera. Elsevier, Amsterdam
Boudagher–Fadel MK (2013) Biostratigraphic and Geological Significance of Planktonic Foraminifera. UK: Office of the Vice Provost (Research), UCL. (OVPR UCL), 2nd (ed). London
Brandano M, Giannini E, Schiavinotto F, Verrubbi V (2007) Miogypsina globulina (Michelotti) from lower Miocene Villa S. Lucia section (M.TE Cairo, Central Apennines). Geol Romana 40:119–127
Brandano M, Morsilli M, Vannucci G, Parente M, Bosellini F, Vicens G (2010) Rhodolith–rich lithofacies of the Porto Badisco Calcarenites (upper Chattian, Salento, southern Italy). It J Geosci 129(1):119–131
British Petroleum Company (1963) Isfahan geological map (a) and Khorramabad geological map (b), 1:250000. London
Buois C, Armynot Du, Châtelet E, Cherchi A (2012) Benthic Foraminiferal assemblages in the current–dominated Strait of Bonifacio (Mediterranean Sea). J Foramin Res 42:39–55
Burchette TP, Wright VP (1992) Carbonate ramp depositional systems. Sed Geol 79:3–57
Cahuzac B, Poignant A (1997) An attempt of biozonation of the Oligo-Miocene in the European basin, by means of larger neritic foraminifera. Bull Soc Géol Fr 168(2):155–169
Casini G, Gillespie PA, Vergés J, Romaire I, Fernández N, Casciello E, Saura E, Mehl C, Homke S, Embry JC, Aghajari L, Hunt DW (2011) Sub–seismic fractures in foreland fold and thrust belts: insight from the Lurestan Province, Zagros Mountains. Iran Petroleum Geosci 17:263–282
Corda L, Brandano M (2003) Aphotic zone carbonate production on a Miocene ramp Central Apennines, Italy. Sed Geol 61:55–70
Drinia H, Tsaparas N, Antonarakou A, Goumas G (2003) Benthic foraminiferal biofacies associated with Middle to early Late Miocene oxygen deficient conditions in the Eastern Mediterranean. In: Proceedings of the 8th International conference on environmental science and technology Lemnos Island, Greece, pp A 191–198
Esmaili K (2008) The study of microfacies and sedimentary environment of the Tertiary deposits and coarse grain Quaternary fluvial sediments in south of Shahr Kord. Unpublished MSc. thesis, Islamic Azad University, Khorasgan (Isfahan) branch
Fakhari MD, Axen GJ, Horton BK, Hassanzadeh J, Amini A (2008) Revised age of proximal deposits in the Zagros foreland basin and implications for Cenozoic evolution of the high Zagros. Tectonophys 451:170–185
Flügel E (2004) Microfacies of carbonate rocks. Springer, Berlin
Gavillot Y, Axen GJ, Stockli DF, Horton BK, Fakhari MD (2010) Timing of thrust activity in the High Zagros fold–thrust belt, Iran, from (U–Th)/He thermochronometry. Tectonics TC4025:25–29. doi:10.1029/2009TC002484
Geel T (2000) Recognition of stratigraphic sequences in carbonate platform and slope deposits: empirical models based on microfiches analysis of Paleogene deposits in southeastern Spain. Palaeogeogr Palaeoclimatol Palaeoecol 155:211–238
Hallock P, Glenn EC (1986) Larger foraminifera: a tool for paleoenvironmental analysis of Cenozoic depositional facies. Palaios 1(1):55–64
Homke S, Verges J, Graces M, Emami H, Karpuz R (2004) Magneto stratigraphy of Miocene–Pliocene Zagros foreland deposits in the front of the Pushe Kush Arc (Lurestan Province, Iran). Earth Planet Sci Lett 225:397–410
James GA, Wynd JG (1965) Stratigraphic nomenclature of Iranian oil consortium agreement area. AAPG Bull 49:2182–2245
Loeblich AR, Tappan H (1988) Foraminiferal genera and their classification (2 vols). Van Nostrant Reinhold Company, New York
Molinaro M, Guezou JC, Letutmy P, Eshraghi SA, De Lamotte DF (2004) The origin of changes in structural style across the Bandar Abbas syntaxis, SE Zagros (Iran). Mar Petrol Geol 21:735–752
Mossadegh ZK, Haig DW, Allan T, Adabi MH, Sadeghi A (2009) Salinity changes during late oligocene to early miocene asmari formation deposition, Zagros Mountains. Iran Palaeogeogr Palaeoclimatol Palaeoecol 272:17–36
Petrova P (2004) Foraminiferal assemblages as an indicator of foreland basin evolution (Carpathian Foredeep, Czech Republic). Bulletin of Geosci 79:231–242
Rami M, Vaziri MR, Taherpour Khalil Abad M, Hosseini SA, Carević I, Allameh M (2012) Microbiostratigraphy of the lower cretaceous strata from the Bararig Mountain. SE Iran Rev Mex Cienc Geol 29(1):63–75
Reiss Z, Hottinger L (1984) The Gulf of Aqaba, Ecological micropaleontology (Ecol. Stud. 50). Springer, Tokyo
Reuter M, Piller WE, Harzhauser M, Mandic O, Berning B, Rögel F, Kroh A, Aubry MP, Wielandt-Schuster U, Hamadani A (2009) The Oligo–/Miocene Qom Formation (Iran): evidence for an early Burdigalian restriction of the Tethyan Seaway and closure of its Iranian gateways. Int J Earth Sci (Geol Rundsch) 98:627–650
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. Palaeogeogr Palaeoclimatol Palaeoecol 179:43–56
Sepehr M, Cosgrove JW (2004) Structural framework of the Zagros fold thrust belt. Iran Mar Pet Geol 21:829–843
Taherpour Khalil Abad M, Aryaei AA, Ashouri AR, Ghaderi A (2011) Introducing some echinoderms from the Tirgan Formation, Kopeh-Dagh Basin. NE Iran Geopersia 1(1):83–94
Wilson JL (1975) Carbonate facies in geologic history. Springer, New York
Zahedi M, Vaezipour J, Rahmati Ilkhchi M (1999) Geological Quadrangle map of Iran (Shahr Kord), scale 1:250,000, no. E8. Geological Survey of Iran
Acknowledgments
This research was financially supported by the Ferdowsi University of Mashhad, Iran. We gratefully thank Dr. Gheorghe Popescu for the very valuable contributions to the taxonomic identifications.
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Rahiminejad, A.H., Yazdi, M. & Ashouri, A.R. Foraminiferal paleoecology of an upper Cenozoic synorogenic conglomeratic succession in the Zagros basin, Iran. Carbonates Evaporites 31, 25–38 (2016). https://doi.org/10.1007/s13146-015-0237-6
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DOI: https://doi.org/10.1007/s13146-015-0237-6