Microfacies and sedimentary environment of the dariyan formation from Banesh (North and Northwest of Shiraz, Iran)

Paper Details

Research Paper 01/03/2015
Views (128) Download (3)

Microfacies and sedimentary environment of the dariyan formation from Banesh (North and Northwest of Shiraz, Iran)

Mahnaz Parvaneh Nejad Shirazi, Mahmud Rezaei
J. Bio. Env. Sci.6( 3), 496-502, March 2015.
Certificate: JBES 2015 [Generate Certificate]


The Dariyan Formationin studied section is in the vicinity of Dare-sefid village. The studies on this region show the sedimentation of Dariyan Formation between two discontinuities in a carbonated platform of ramp type. In this region, eight microfacies including five types of faciesbelts namely open marine, restricted environment, submarine ridges (i.e. shoal), Lagoon and tidal flat environment can be detected. The comparison of analyzed facies with current environments and considering the formation environment of each set of facies, lack of reef facies, expansion of peloidsfacies and absence of iteratively deposited facies show that Dariyan Formation in Banesh region is formed in a carbonated platform of ramp type. The associated analyses show that in the length of middle aptian, carbonated depositions include aggregations saturated with foraminifera and calcareous algae within Dariyan Formation of the intended region so that the accumulation of bioclasts, especially benthic foraminifera, rise from open marine to subtidal and inter-tidal side. In section 8 (i.e. S1 Microfacies), the prevalence of foraminifera gets to more than 95% while their lowest prevalence is found in open marine and tidal flat. The formation environment of Dariyan Formation in the studied region is mainly associated with tidal to lagoon environment so that 74% of the formation is made in these two environments.


Adabi MH, Salehi MA, Ghabeishavi A. 2010. Depositional environment, Sequence stratigraphy and geochemistry of Lower Cretaceous carbonates 9 Fahliyan Formation), south-west Iran, Journal Asian Earth Science 39, 148-160.

Adachi N, Ezaki Y, Liu J. 2004. The origins of peloids immediately after the endpermianextinction, Guizhou Province, South China: Sedymentary Geology 164, 161-178.

Afshar-harb A. 2002. Geology of oil in Iran, Technical Department of Tehran University 586.

Aghanabati A. 2007. Geology of Iran and national mineral discoveries, Tehran 586.

Bachmann M, Hirsch F. 2006. Lower Cretaceous carbonate platform of the eastern levant (Galilee and Golan heights): Stratigraphy and second-order sea-level change, Cretaceous Research 27, 487-512.

Dunham RJ. 1962. Classification of carbonate rocks according to depositional texture. In: Ham W.E. Carbonate Facies in Geological History. Springer-Verlag, New York.

Flügel E. 2004. Microfacies Analysis of Limestone: Analysis, Interpretation and Application: Springer Verlag. Berlin 976.

Flugel E. 2010. Microfacies analysis of Limestones. Springer Verlag 976.

Guoqiang XU, Shaonan Z, Zhongdong LI, Lailiang S, Huimin LIU. 2007. Carbonate Sequence Stratigraphy of a Back-Arc Basin: A Case Study of the Qom Formation in the Kashan Area, Central Iran. Acta Geol. Sinica-English Ed 81, 488– 500.

James GA, Wynd JG. 1965. Stratigraphic nomenclature of Iranian oil consortium agreement area. Bull. Am. Ass. Petrol. Geol 49(12), 2182-2245.

Motii H. 1994. Stratigraphy of Zagros, National Geology Publication 583.

Pittet B, van Buchem FSP, Hillga¨rtner H, Razin P, Gro¨tsch J, Droste H. 2002. Ecological succession, palaeo environmental change, and depositional sequences of Barremian-Aptian shallow-water carbonates in northern Oman. Sedimentology 49, 555-581.

Read JF. 1985.  Carbonate  platform  faciesmodels: Am. Assoc. Petrol. Geol. Bull 69(1), 1− 21.

Sahraeyan M, Bahrami M, Arzaghi S. 2014. Facies analysis and depositional environments of the Oligocene-Miocene Asmari Formation, Zagros Basin, Iran. Geosci. Front 5, 103–112.

Stocklin J. 1974. Structural history and tectonics of Iran: Areview. American Association of Petroleoum Geologists Bulletine 52(7), 1229-1258.

Wilson MEJ, Evans MJ. 2002. Sedimentology and diagenesis of Tertiary carbonates on the Mangkalihat Peninsula, Borneo: implications for subsurface reservoir quality. Mar. Pet. Geol 19, 873–900.