Bio Stratigraphy and Trace fossils of Chehel-Kaman Formation in type section (east of Kopet-Dagh Basin)

Document Type : مقالات پژوهشی

Authors

• batool rivandi
• Mohammad Vahidinia ¹
• Mehdi Nadjafi ¹
• Asadollah Mahboubi ²
• Seyed Mohammad Ali Moosavizadeh ³

¹ Associate professor, Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran

² Professor, Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran

³ Department of Geology, Faculty of Science, Yazd University, Yazd, Iran

10.22067/sed.facies.v8i1.19490

Abstract

Chehel-Kaman Formation is one of the Paleogene formations of Kopet-Dagh basin in east of Iran that conformably overlies and underlies the siliciclastic Pesteligh and Khangiran Formations, respectively. The lithology of it mainly consists of limestone and dolomite with interbeds of sand, shale and evaporate sediments. Two Paleosol in Unit 2 and 6 were identified and studied. Based on biostratigraphic studies, 33 genere and 32 species of Larger benthic foraminifera have been identified that according to recognition of Laffitteina, Miscellanea and Rotalid the age of Chehel-Kaman formation is Selandian to Ypresian (?). The Paleocene/Eocene boundary has been probably recorded as a thin red paleosol horizon (~10-15 cm). Identified Trace fossils are belonging to Skolithos and Cruziana ichnofacies that indicates this settings have been deposited in a carbonate Ramp system such as semi consolidated substrate to sublittoral carbonate zone.

Keywords

• Kopet-Dagh
• Chehel-Kaman
• Biostratigraphy
• Larger benthic foraminifera
• Selandian
• Ypresian
• trace fossils
• Carbonate ramp

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References

افشارحرب، ع.،1373. زمین شناسی ایران: زمین شناسی کپه داغ. سازمان زمین شناسی و اکتشافات معدنی کشور، 275 ص.

بایت گل، آ.، محبوبی، ا.، حسینی برزی، م.، موسوی حرمی، ر.، 1389. مدل ایکنولوژیکی نهشته‌های آواری سازند شیرگشت در زیرپهنه کلمرد ایران مرکزی. پژوهشهای چینه نگاری و رسوب شناختی دانشگاه اصفهان، 38: 43-68.

خسروتهرانی، خ.، 1381. ایکنولوژی و کاربرد آن در زمین شناسی. انتشارات دانشگاه آزاد اسلامی، 256 ص.

وزیری، م.ر.، داستانپور، م.، ناظری، م.، 1384. مبانی دیرینه شناسی، جلد اول. انتشارات دانشگاه شهید باهنر کرمان، 359 ص.

Anderson, B.G., & Droser, M.L., 1998. Ichnofabrics and geometric con figurations of Ophiomorpha within a sequence stratigraphic framework: an example from the Upper Cretaceous US western interior. Sedimentology 45: 379-396.

Berberian, M., & King, G.C.P., 1981, Toward a paleogeography and tectonic evolution of Iran. Canadian Journal of Earth Science, 18: 210-265.

Bolli, H.M., & Krasheninnikov, V.A., 1977. Problems in Paleogene and Neogene correlations based on planktonic foraminifera. Micropaleontology, 23 (4): 436-452.

Boudagher-Fadel, M.K., 2008. Evolution and Geologic al Significance of Larger Benthic Foraminifera. Developmen ts in Paleontology and Stratigraphy, Elsevier, Amsterdam, 21: 1-540.

Bralower, T.J., Premoli-Silva, I., Malone, M.J., et al., 2002. Proceedings of the Ocean Drilling Program, Initial Report, Leg 198 College Station, Texas (Ocean Drilling Program), SHIPBOARD SCIENTIFIC PARTY CHAPTER 1, LEG 198 SUMMARY, p. 1–148.

Bromly, R.G., 1990. Trace fossils: Biology and Taphonomy. Unwin Hyman, Boston. 280 p.

Dickson, J.A.D., 1966. Carbonate identification and genesis as revealed by staining. Journal of Sedimentary Petrology, 36: 441-505.

Driese, S.G., & Dott, R.H.Jr. 1984. Model for Sandstone-Carbonate cyclothems based on upper member of Morgan formation (middle Pennsylvanian) of northern Utah and Colrado. American Association of Petroleum Geologists Bulletin, 68: 574-597.

Ellizabeth, R., Clechenko, D., Harringto, J., & Cynthia A., 2007. Terrestrial records of a regional weathering profile at the Paleocene-Eocene. Geological Society of America Bulletin, 119 (3-4): 428-442.

Frey, R.W., Howard, J.D. & Pryor, W.A., 1978. Ophiomorpha: its morphologic taxonomic and environmental significant. Paleogeography, Palaeclimathology, Palaeocology, 23: 199-229.

Gibbs, S.J., Bralower, T.J., Bown, P.R., Zachos, J.C., & Bybell, L.M., 2006, Shelf and open-ocean calcareous phytoplankton assemblages across the Paleocene-Eocen e Thermal Maximim: Implication s for global productivity gradients. Geology, 34 (4): 233 –236.

Grabau, A.W., 1904. On the classification of sedimentary rocks. American Geologists, 33: 228-247.

Hallock, P., 2000. Symbiont-bearing foraminifera: Harbingers of global change? Micro paleontology, 46 (1): 95–104.

Hallock, P., & Glenn, E.C., 1986. Larger foraminifera: A tool for paleoenvironmental analysis of Cenozoic carbonate depositional facies. Palaios, 1: 55–64.

Hallock, P., Premoli Silva, I., & Boersma, A., 1991. Similarities between planktonic and larger foraminiferal evolutionary trends through Paleogene paleoceanographic changes. Palaeogeography, Palaeoclima-tology, Palaeoecology, 83: 49–64.

Hottinger, L., 1982. Larger Foraminifera, giant cells with a historical background: Naturwissenschaften, 69: 361–371.

Hottinger, L., 1998. Shallow benthic foraminifera at the Paleocen–Eocene boundary. Strata, 9: 61–64.

Jones, R.W., 1999. Marine Invertebrate (chiefly foraminiferal) evidence for the palaeogeography of the Oligocene-Miocene of western Eurasia and consequences for terrestrial vertebrate migration. In: Agusti, J., Rook, L., & Andrews, P., (eds.), The Evolution of Neogene Terrestrial Systems in Europe. Cambridge University Press, Cambridge, p. 274–308.

MacEachern, J.A., Pemberton. S.G., Gingras, M.K., & Bann, K.L. 2007. The ichnofacies paradigm: a fifty-year perspective. In: Miller, W.M., III (ed.), Trace Fossils: Concepts, Problems, Prospects. Elsevier, Amsterdam, pp. 52-77.

Monaco, P., & Garassino, A., 2001. Burrows and body fossil of decapod crustaceans in the Calcari Grigi, Lower Jurassic, Trento Platform (Italy). Geobios, 34: 291–301.

Monaco, P., & Giannetti, A., 2001. Stratigraphia tafonomica nel Giurassico Inferiore dei Calcari Grigi della Piattaforma di Trento. Atti Ticinensi di Scenz a della Terra, 42: 17 5 –209.

Orue-Etxebarria, X., Pujalte, V., Bernaola, G., Apellaniz, E., Baceta, J.I., Payros, A., Nunez-Betelu, K., Serra-Kiel, J., & Tosquella, J., 2001. Did the late Paleocene thermal maximum affect the evolution of larger foraminifers? Evidence from calcareous plankton of the Campo section (Pyrenees, Spain). Marine Micropaleontology, 41: 45–71.

Pemberton, S.G., MacEachern, J.A., & Frey, R.W., 1992. Trace fossil facies models: environmental and allostratigraphic significance. In: Walker, R.G., & James, N., (eds.), Facies Models: Responses to Sea Level Change. Geological Association of Canada, pp. 47-72.

Pemberton, G.S., Spila, M., Pulham, A.J., Saunders, T., MacEachern, J.A., Robbins, D., & Sinclair, I.K., 2001. Ichnology, Sedimentology of shallow to marginal marine systems: Ben Nevis, Avalon Reservoirs, Jeanne D'Arc Basin. Geological Association of Canada, Short Course Notes, 15: 1– 343.

Pickerill, R. K., Donovan, S.K., & Mitchel, S.F., 1998. Ichnology of late Pleistocene Port Morant Formation of southeastern Jamaica. Caribbean Journal of Science 34 (1-2): 12-32.

Pujalte, V., Orue-Etxebarria, X., Schmitz, B., Tosquella, J., Baceta, J.I., Payros, A., Bernaola, G., Caballero, F., & Apellaniz, E., 2003. Basal Ilerdian (earliest Eocene) turnover of larger foraminifera: Age constraints based on calcareous plankton and d13C isotopic profiles from new southern Pyrenean sections (Spain). In: Wing, S.L., et al., (eds.), Causes and consequences of globally warm climates in the early Paleogene. Geological Society of America, Special Paper, 369: 205–221.

Scheibner, C., & Speijer, R.P., 2008. Late Paleocene-Early Eocene Tethyan carbonate platform evolution: A response to long and short-term paleoclimatic change. Earth-Science Reviews, 90: 71–102.

Scheibner, C., & Speijer, R.P., 2009. Recalibration of the Tethyan shallow-benthic zonation across the Paleocene – Eocene boundary: The Egyptian Record. Geologica Acta, 7 (1-2): 195–214.

Scheibner, C., Speijer, R.P., & Marzouk, A.M., 2005. Turnover of larger foraminifera during the Paleocene–Eocene Thermal Maximum and paleoclimatic control on the evolution of platform ecosystems. Geology, 33 (6): 493–649.

Seilacher, A., 2007. Trace Fossil Analysis. Springer, Berlin, 226 p.

Serra-Kiel, J., Hottinger, L., Caus, E., Drobne, K., Ferrandez, C., Jauhri, A.K., Less, G., Pavlovec, R., Pignatti, J., Samso, J.M., Schaub, H., Sirel, E., Strougo, A., Tambareau, Y., Tosquella, J., & Zakrevskaya, E., 1998. Larger foraminiferal biostratigraphy of the Tethyan Paleocene and Eocene. Bull. de la Societe Geologique de France, 169: 281–299.

Scheibner, C., Speijer, R.P. & Marzouk, A., 2005. Larger foraminiferal turnover during the Paleocene – Eocene thermal maximum and paleoclimatic control on the evolution of platform ecosystems. Geology, 33: 493 – 496.

Sluijs, A., Brinkhuis, H., Crouch, E.M., John, C.M., Handley, L., Munsterman, D., Bohaty, S.M., Zachos, J.C., Reichart, G.J., Schouten, S., Pancost, R.D., Damste, J.S.S., Welters, N.L.D., Lotter, A.F., & Dickens, G.R., 2008. Eustatic variations during the Paleocene–Eocene greenhouse world. Paleoceanography, 23: PA4216.

Zepeda, M.A., 1998. Planktonic foraminiferal diversity, equitability and biostratigraphy of the uppermost Campanian-Maastrichtian; ODP Leg 122, Hole 762, Exmouth Plateau, NW Australia, eastern Indian Ocean. Cretaceous Research, 19: 117-152.