Fereshteh Karami-Movahed¹, Mohsen Aleali^2*, Parviz Ghazanfari³

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¹ Faculty of Basic Sciences, Department of Geology, Islamic Azad University, North Tehran Branch, Tehran, Iran.
² Department of Geology, Science and Research Branch, Islamic Azad University, Tehran, Iran.
³ Department of Geology, Imam Khomeini International University of Science, Qazvin, Iran.
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Abstract: In this study, to identify and analyze facies of depositional environment and depositional model of Qom Formation, stratigraphic Saran Section (southwest of Semnan) was selected. Qom Formation in Saran section includes about 380 meters of conglomerate at the base, chalk, limestone, marl, and shale. Petrographic studies with facies analysis have led to the identification of 12 microfacies, these microfacies have been deposited in four facies groups including tidal flat, lagoon, barrier and open marine. Study of horizontal and vertical facies changes and their comparison with recent and ancient environments reveals that Qom Formation in this section relates to shallow marine environment and its facies were deposited in a shelf carbonate platform and are comparable with contemporary shelf platforms such as Florida and old shelf platforms such as Mozduran. The most important diagenetic processes affecting the studied section include micritization, bioturbation, cementation, dissolution, neomorphism, fracturing, mechanical and chemical compaction, hematitization and dolomitization. These processes have formed in marine, meteoric and burial diagenetic environments.

Keywords: Facies Analysis, Depositional Environment, Qom Formation, Saran Semnan, Centeral Iran

Cite this paper: Karami-Movahed, F. , Aleali, M. and Ghazanfari, P. (2016) Facies Analysis, Depositional Environment and Diagenetic Features of the Qom Formation in the Saran Semnan, Central Iran. Open Journal of Geology, 6, 349-362. doi: 10.4236/ojg.2016.66030.

References

[1]   Aghanabati, SA.AS. (2004) Geology of Iran. Geological Survey of Iran, 586 p.

[2]   Rahimzadeh, F. (1994) Geology of Iran, Oligocene, Miocene, Pliocene Geological Plan of the Book, Number 12, the Ministry of Mines and Metals, the Country’s Geological Survey, p. 311.

[3]   Soleimani-Asl, S. and Aleali, M. (2016) Microfacies Patterns and Depositional Environments of the Sarvak Formation in the Abadan Plain, Southwest of Zagros. Open Journal of Geology, 6, 201-209.
http://dx.doi.org/10.4236/ojg.2016.63018

[4]   HajianBarzi, M., Aleali, M., Jahani, D. and FalahKheyrkhah, M. (2015) Microfacies, Sedimentary Environment, Sequence Stratigraphy and Strontium Dating of the Dashtak Formation in the Persian Gulf, Fars and Izeh Regions. Geosciences, 24, 185-198.

[5]   Aleali, M., Rahimpour-Bonab, H., Moussavi-Harami, R. and Jahani, D. (2013) Environmental and Sequence Stratigraphic Implications of Anhydrite Textures: A Case from the Lower Triassic of the Central Persian Gulf. Journal of Asian Earth Sciences, 75, 110-125.
http://dx.doi.org/10.1016/j.jseaes.2013.07.017

[6]   Aleali, M., Rahimpour-Bonab, H., Moussavi-Harami, R., Jahani, D. and Asadi, A. (2013) Depositional Environment and Sequence Stratigraphy of the Kangan Formation in South Pars Field. Geosciences, 87, 65-74.

[7]   Hassanvand, A. and Aleali, M. (2009) Study of Lithofacies, Microfacies and Depositional Environment of Asmari Formation in Parsi Oil Field. Journal of Sediment and Sedimentary Rock, 2, 82-73.

[8]   Aleali, M., Feiznia, S. and Esmaeili, A. (2007) Sequence Stratigraphy of Sarvak Formation in Northwest of Behbahan (Maghar Valley). Applied Geology, 2, 80-86.

[9]   Zare, S., Mosavi, M. and Aleali, M. (2007) Study of Microfacies and Sedimentary Environment of the Qom Formation in South of Saveh. Applied Geology, 3, 171-178.

[10]   Chahida, M.R., Papp, A. and Steininger, F. (1997) Fossi Fahrung der oligo—Miocene Qom Formation inprofilenbei Abegarm—Zefreshbei Isfahan (Zentraliran), Beitrage zur palaontologie Osterreichs, 79-93.

[11]   Rahaghi, A. (1973) Etude do quelquegrands foraminifera de la formation de Oom (Iran Center). Revue de Micropaleontologie, 16, 23-38.

[12]   Stocklin, J. and Setudehnia, A. (1971) Stratigraphic lexicon of Iran. Part 1: Central, North and East Iran. Geological Survey of Iran, Report No. 18, 376 p.

[13]   Daneshian, J. and Dana, I.R. (2007) Early Miocene Benthic Foraminifera and Biostratigraphy of the Qom Formation, DehNamak, Central Iran. Journal of Asian Earth Science, 29, 844-858.

[14]   Schuster, E. and Wielandt, U. (1999) Oligocene and Early Miocene Coral Faunas from Iran: Paleo Biogeoraphy. International Journal of Earth Sciences, 88, 571-581.

[15]   Dunham, R.J. (1962) Classification of Carbonate Rocks According to Depositional Texture. American Association of Petroleum Geologists Memorial 1, Tulsa, 108-121.

[16]   Wilson, J.L. (1975) Carbonate Facies in Geological History. Springer, Berlin, 471.
http://dx.doi.org/10.1007/978-1-4612-6383-8

[17]   Reading, H.G. (1985) Sedimentary Environments and Facies. Blackwell Scientific Publications, Oxford, 615p.

[18]   Tuker, M.E. (2001) Sedimentary Petrology. 3rd Edition. Blackwell, Oxford, 260.

[19]   Pomar, L. (2001) Types of Carbonate Platforms: A Genetic Approach. Basin Research, 13, 313-334.
http://dx.doi.org/10.1046/j.0950-091x.2001.00152.x

[20]   Flugel, E. (2010) Microfacies of Carbonate Rocks, Analysis, Interpretation and Application. Springer, Berlin, 976.

[21]   Folk, R.L. (1980) Petrology of Sedimentary Rocks. Hemphill Publishing, Austin, 184p.

[22]   Bathurst, R.G.C. (1966) Boring Algae, Micrite Envelope and Lithification of Molluscan Biosparites. Geological Journal, 5, 15-32.
http://dx.doi.org/10.1002/gj.3350050104

[23]   Friedman, G.M. (1985) The Term Micrite or Micritic Cement Is a Contradiction-Discussion of Micritic Cement in Microborings Is Not Necessarily a Shallow-Water Indicator. Journal of Sedimentary Research, 55, 777.
http://dx.doi.org/10.1306/212F87EC-2B24-11D7-8648000102C1865D

[24]   Moore, C.H. (2001) Carbonate Reservoirs, Porosity Evolution and Diagenesis in a Sequence Stratigraphic Framework. Vol. 55, Development in Sedimentology, Elsevier, Amsterdam, 444 p.

[25]   Noori, N. and Lasemi, Y. (1997) The Microfacies and Sedimentary Environments of Qom Formation in Semnan and Ardestan Area. Unpublished MSc Thesis, Tarbiyat Moallem University, Kharazmi, 86 p.

[26]   Daneshian, J. and Chegini, A. (2007) Biostratigraphy of the Qom Formation in the Northeast and Southeast of Semnan. Geosciences, 16, 72-79.

[27]   Purser. B.H (1973) The Persian Gulf, Holocene Carbonate Sedimentation and Diagenesis a Shallow Epicontinental Sea. Springer, Berlin. New York Palaeohistoria, 19, 18-85.