Sedimentary environment and sequence stratigraphy of Jahrum Formation with a view on Paleo-ecology in the interior Fars, Zagros (SW Iran)
Subject Areas :
sediment
seyede Samaneh yazdanpanah
1
,
Vahid Ahmadi
2
,
Mehran Arian
3
,
Zahra maleki
4
1 - Ph.D. Student, Department of Earth Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran.
2 - Assistant Professor, Department of Geology, Shiraz Branch, Islamic Azad University, Tehran, Iran.
3 - Professor, Department of Earth Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran. *(Corresponding Author)
4 - Assistant Professor, Department of Earth Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Received: 2021-09-19
Accepted : 2022-01-19
Published : 2022-11-22
Keywords:
Sedimentary environment,
Microfossil,
Interior Fars,
Zagros,
Jahrum Formation,
Abstract :
Background and Objective: Jahrum Formation has long been of special interest due to its wide distribution, Biostratigraphic and Lithostratigraphic differences in different areas, and the existence of hydrocarbon reserves. The purpose of this study is to investigate the Jahrum Formation in the study areas, in terms of stratigraphic position (thickness and lithology) and geology (contact with upper and lower formations) and its paleontology.
Material and Methodology: The study conducted on Jahrum formation (lower and Middle Eocene) of interior Fars, Zagros. The 465 samples were collected from Gushenekan, kuh-e-Chehel Cheshme and Tong garm. Thin sections were used to study of stratigraghy, microfacies and microfossils.
Findings: According to them, two sedimentery sequences identified. The main aims of the research are Identification of the Jahrum formation borders that connected to the Asmari at the top as discotinuty and the Sachun formation at bottom as concordant.
Discussion and Conclusions: Based on this study Jahrum formation has deposited in the internal ramp and consisting two sequences. Additionaly, sedimentary environment, geochemical analysis and Paleontological ecology of the Jahrum were studied too. Also, the tectonic position of the sedimentary basin of Jahrum Formation in comparison with the adjacent basins was presented in the form of a conceptual design for the first time.
References:
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Wray Jr, R. C., Holtmann, B., Ribaudo, J. M., Keiter, J., & Weeks, P. M. 1977. A comparison of conjunctival and subciliary incisions for orbital fractures. British journal of plastic surgery, 30(2), 142-145.
Tucker, M. E. 1993. Carbonate diagenesis and sequence stratigraphy. In Sedimentology review 1(pp. 51-72). Oxford, UK: Blackwell Scientific Publications.quisition of phosphorus by plants. Functional Plant Biology, 28(9), 897-906.
Pomar, L. 2001. "Types of carbonate platforms: a genetic approach." Basin research 13(3): 313-334.
Renema, W. 2006. Large benthic foraminifera from the deep photic zone of a mixed siliciclastic-carbonate shelf off East Kalimantan, Indonesia. Marine Micropaleontology, 58(2), 73-82.
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Wagoner, P., & Sarrantonio, M. 1998. Legume-based cropping systems have reduced carbon and nitrogen losses. Nature, 396(6708), 262-265
Racey, A. 2001. A review of Eocene nummulite accumulations: structure, formation and reservoir potential. Journal of petroleum geology, 24(1), 79-100.
Christie-Blick, N. 1991. Onlap, offlap, and the origin of unconformity-bounded depositional sequences. Marine Geology, 97(1-2), 35-56
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James, G. and J. Wynd, J.1965. Stratigraphic nomenclature of Iranian oil consortium agreement area. AAPG bulletin 49(12): 2182-2245.
Motiei, H. 1993. Stratigraphy of Zagros. Treatise on the Geology of Iran 60: 151.
Flügel, D., Hess, J., Kietzmann, T., & Görlach, A. 2004. Redox-sensitive regulation of the HIF pathway under non-hypoxic conditions in pulmonary artery smooth muscle cells.
Chaproniere, G. C. 1975. Palaeoecology of Oligo-Miocene larger Foraminiferida, Australia. Alcheringa, 1(1), 37-58.
Hohenegger, J., Yordanova, E., & Hatta, A. 2000. Remarks on west Pacific Nummulitidae (foraminifera). The Journal of Foraminiferal Research, 30(1), 3-28.
Catuneanu, O., Khalifa, M. A., & Wanas, H. A. 2006. Sequence stratigraphy of the lower cenomanian bahariya formation, bahariya oasis, western desert, Egypt. Sedimentary Geology, 190(1-4), 121-137.
Reiss, Z. and Hottinger, 1984. The Gulf of Aqaba Ecological Micropaleontology. Springer, Berlin, 354 p.
Hottinger, L. 1983. Processes determining the distribution of larger foraminifera in space and time. Utrecht Micropaleontological Bulletins, 30, 239-253.
Boudagher-Fadel, M. K., & Wilson, M. 2000. A revision of some larger foraminifer of the Miocene of southeast Kalimantan. Micropaleontology, 46(2), 153-165.
Gast, R. J., & Caron, D. A. 1996. Molecular phylogeny of symbiotic dinoflagellates from planktonic foraminifera and radiolaria. Molecular Biology and Evolution, 13(9), 1192-1197.
Hallock, P. 1999. Symbiont-bearing foraminifera. In Modern foraminifera, pp. 123-139. Springer, Dordrecht.
Richardson, A. E. 2001. Prospects for using soil microorganisms to improve the ac
Dunham, R. J. 1965. Vadose pisolite in the Capitan reef. AAPG Bulletin, 49(3), 338-338.
Beavington-Penney, S. J., & Racey, A. 2004. Ecology of extant nummulitids and other larger benthic foraminifera: applications in palaeoenvironmental analysis. Earth-Science Reviews, 67(3-4), 219-265.
Flügel, E. 2010. Microfacies and archaeology. Microfacies of carbonate rocks, Springer: 903-915.
Hottinger, A. F., Fine, E. G., Gurney, M. E., Zurn, A. D., & Aebischer, P. 1997. The copper chelator d‐penicillamine delays onset of disease and extends survival in a transgenic mouse model of familial amyotrophic lateral sclerosis. European Journal of Neuroscience, 9(7), 1548-1551.
Armstrong, H. A. & Brasier, M. D. 2005. Microfossils, 2nd ed. 296 pp.
Adams, S. Mackenzie, and C. Guildford. Longman, 1984. No. of pages: 104
Dunham, R. J., 1962. Classification of carbonate Rocks According to Depositional texture, in; Classification of Carbonate Rocks, a Symposium ed. W. Ham. AApg, Men1, P. 108 – 121.
Wilson, J. 1975. "Carbonate facies in geologic history Springer-Verlag." New York 471.
Wray Jr, R. C., Holtmann, B., Ribaudo, J. M., Keiter, J., & Weeks, P. M. 1977. A comparison of conjunctival and subciliary incisions for orbital fractures. British journal of plastic surgery, 30(2), 142-145.
Tucker, M. E. 1993. Carbonate diagenesis and sequence stratigraphy. In Sedimentology review 1(pp. 51-72). Oxford, UK: Blackwell Scientific Publications.quisition of phosphorus by plants. Functional Plant Biology, 28(9), 897-906.
Pomar, L. 2001. "Types of carbonate platforms: a genetic approach." Basin research 13(3): 313-334.
Renema, W. 2006. Large benthic foraminifera from the deep photic zone of a mixed siliciclastic-carbonate shelf off East Kalimantan, Indonesia. Marine Micropaleontology, 58(2), 73-82.
Van Wagoner, J. C., Posamentier, H. W., Mitchum, R. M. J., Vail, P. R., Sarg, J. F., Loutit, T. S., & Hardenbol, J. 1988. An overview of the fundamentals of sequence stratigraphy and key definitions.
Wagoner, P., & Sarrantonio, M. 1998. Legume-based cropping systems have reduced carbon and nitrogen losses. Nature, 396(6708), 262-265
Racey, A. 2001. A review of Eocene nummulite accumulations: structure, formation and reservoir potential. Journal of petroleum geology, 24(1), 79-100.
Christie-Blick, N. 1991. Onlap, offlap, and the origin of unconformity-bounded depositional sequences. Marine Geology, 97(1-2), 35-56
