Facies analysis and paleo-environmental reconstruction of the Neogene strata in the Northern Dezful Embayment, Zagros

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Etemad Saeed د.; NAJAFI M.; Zeinolabedin Qavim n.; GHODS A.R.

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Journal: GEOSCIENCES Year:2018 | Volume:27 | Issue:108 Page(s): 3-12

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Title

Facies analysis and paleo-environmental reconstruction of the Neogene strata in the Northern Dezful Embayment, Zagros

Author(s)

Etemad Saeed د. | NAJAFI M. | Zeinolabedin Qavim n. | GHODS A.R. | Issue Writer Certificate

Keywords

Depositional environmentQ1

Dezful embaymentQ2

Mishan FormationQ2

Aghajari FormationQ1

Bakhtyari FormationQ1

Abstract

The present study provides a detailed facies and Depositional environment analyses of the Neogene strata in the northern Dezful embayment, footwall of the Zagros Mountain Front fault. The Neogene strata in this area, including the Mishan, Aghajari, and Bakhtyari Formations, constitute the thickest Zagros foreland succession, with more than 5 km of thickness. As these sediments were deposited synchronous with the main phase of the Zagros orogeny, they have recorded the history of deformation events. During the current study, 9 lithofacies have been identified on the basis of lithology, grain size, sedimentary structures, and bed geometry, which can be classified into three facies assemblages including: gravel dominated (Gm, Gp), sand dominated (Sh, St, Sp, Sr), and mud dominated (Fm, Fl). Furthermore, two major marine ichnofacies, the skolithos and the Cruziana ichonafacies, have been identified at the base of the Aghajari Formation. As the results indicated, the vertical stacking of facies represents an overall shallowing-upward succession that was deposited in marginal marine (Mishan), siliciclastic shoreline (base of Aghajari), meandering river (top of Aghajari) and braided river (Bakhtyari) Depositional environments, from base to top respectively. Considering eustatic sea-level fluctuations in the deposition period (13 to 3 Ma), these results propose that evolution of the Neogene sedimentary basin in the North Dezful likely controlled by tectonic folding and faulting.

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APA: Copy

Etemad Saeed, د., NAJAFI, M., Zeinolabedin Qavim, n., & GHODS, A.R.. (2018). Facies analysis and paleo-environmental reconstruction of the Neogene strata in the Northern Dezful Embayment, Zagros. GEOSCIENCES, 27(108 ), 3-12. SID. https://sid.ir/paper/32559/en

Vancouver: Copy

Etemad Saeed د., NAJAFI M., Zeinolabedin Qavim n., GHODS A.R.. Facies analysis and paleo-environmental reconstruction of the Neogene strata in the Northern Dezful Embayment, Zagros. GEOSCIENCES[Internet]. 2018;27(108 ):3-12. Available from: https://sid.ir/paper/32559/en

IEEE: Copy

د. Etemad Saeed, M. NAJAFI, n. Zeinolabedin Qavim, and A.R. GHODS, “Facies analysis and paleo-environmental reconstruction of the Neogene strata in the Northern Dezful Embayment, Zagros,” GEOSCIENCES, vol. 27, no. 108 , pp. 3–12, 2018, [Online]. Available: https://sid.ir/paper/32559/en

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