Sedimentology of longitudinal bars in the Elyato river (South Western Fariman)

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Ghaderi Fijani H.; KHANEHBAD M.; MOUSSAVI HARAMI R.; MAHBOUBI A.

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Journal: GEOSCIENCES Year:2016 | Volume:26 | Issue:101 Page(s): 69-78

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Title

Sedimentology of longitudinal bars in the Elyato river (South Western Fariman)

Author(s)

Ghaderi Fijani H. | KHANEHBAD M. | MOUSSAVI HARAMI R. | MAHBOUBI A. | Issue Writer Certificate

Keywords

Longitudinal BarsQ1

Architectural ElementsQ2

Sedimentary ModelQ2

Elyato RiverQ1

FarimanQ2

Abstract

The elongated Elyato River catchment, covering about 52. 89 Km2 areas, is located in southwestern Fariman. To understand the grain size variation and effective factors in downstream fining, 35 samples from central axis of Longitudinal Bars have been collected and analyzed. The results indicate that the grain size decreases downstream as exponential. The lithological and geomorphological changes and faulting are effective in the slope percentage changes downstream. Based on petrographic studies, sediments on the river’ s substrate are igneous rock fragments such as gabbro and serpentine group. However, based on sedimentological studies, we show that the sediments of Longitudinal Bars are mostly poorly and very poorly sorted, near symmetrical to very positive skewness and mesokurtic and platy kurtic kurtosis. Six sedimentary facies including grain supported gravel (Gcm), matrix supported gravel (Gmm), grain supported gravel with horizontal bedding (Gh), massive sand (Sm), laminated mud (Fl) and massive mud (Fm) are recognized along the wall of the studied river. These sedimentary facies have formed in 3 Architectural Elements including channel (CH), Gravel bars and bed form (GB) and fine grain clastic deposits (FF). Based on sedimentary facies and Architectural Elements, Sedimentary Model for this river is proposed as gravelly braided river system.

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APA: Copy

Ghaderi Fijani, H., KHANEHBAD, M., MOUSSAVI HARAMI, R., & MAHBOUBI, A.. (2016). Sedimentology of longitudinal bars in the Elyato river (South Western Fariman). GEOSCIENCES, 26(101 ), 69-78. SID. https://sid.ir/paper/31835/en

Vancouver: Copy

Ghaderi Fijani H., KHANEHBAD M., MOUSSAVI HARAMI R., MAHBOUBI A.. Sedimentology of longitudinal bars in the Elyato river (South Western Fariman). GEOSCIENCES[Internet]. 2016;26(101 ):69-78. Available from: https://sid.ir/paper/31835/en

IEEE: Copy

H. Ghaderi Fijani, M. KHANEHBAD, R. MOUSSAVI HARAMI, and A. MAHBOUBI, “Sedimentology of longitudinal bars in the Elyato river (South Western Fariman),” GEOSCIENCES, vol. 26, no. 101 , pp. 69–78, 2016, [Online]. Available: https://sid.ir/paper/31835/en

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