Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

Sedimentological study of the Sangerd drainage basin in Sabzevar

Document Type : Original Research Paper

Authors
Reza Moussavi-Harami 1
Asadollah Mahbubi 2
Ebrahim Amin Sobhani 3
Mahdi Reza Poor Soltani 4
1 Department of Geology, Faculty of Science, Ferdowsi University of Mashhad , Iran
2 Department of Geology, Islamic Azad University, North Tehran Branch, Tehran, Iran
3 Department of Geology, Islamic Azad University, North Tehran Branch, Tehran , Iran
4 Department of Geology, Islamic Azad University, Mashhad Branch, Mashhad , Iran
Abstract
The Sangerd drainage basin is located in central part of Khorasan Province in arid to semiarid climate conditions and consists of three subbasins. Structurally, the study area is a part of Central Iran zone, and is composed of Mesozoic and Cenozoic rocks. The river channels are mainly single with sandy gravelly bedload. The presence of shale and marl as well as seasonal rainfall in the study area, causes the strong erosion. Based on sedimentological studies, 9 lithofacies have been identified. The majority of sediments are sandy gravel (sG) but in downstream they change to gravelly muddy sand (gmS). Geologically, the presence of less resistance sedimentary rocks causes to produce a lot of sediments that can fill Sangerd reservoir very quickly. There for, we suggest by changing the hydraulic condition of channels can decrease the erosion and sediment transport.
Keywords
Sedimentology
Sangerd Dam Drainage Basin
Sabzevar
Khorassan
Iran

Subjects

Blair, T.C., and Mcpherson, I.G., 1999- Grain size and textural classification of coarse sedimentary partcles, Journal of Sedimentary Research, V.69A, P.6-19.
Church, M., 1985- Bed load in gravel-bed rivers, observed phenomena and implications for computation, proceeding of the Annual Meeting of the Canadian, Society for Civil Engineering, Saskatoon, 1985, 2:17-37.
Folk, R.L., 1980- Petrology of Sedimentary Rocks, Hemphill Publishing Co., Austin, Texas, 182P.
Friedman, G.M. and Johnson, K., 1982- Exercieses in Sedimentology, John Wiley and Sons, Inc., NewYork, 208P.
Heede, B.H., 1985- Interactions between stream-side vegetation and stream dynamics, In Riparian Ecosystem and Management: Reconciling conflicting uses, proceedings, General Technical Report RM-120, Rocky Mountain Forest and range Experiment Station, Forest Service, USDA, Ft. Collins, Co, pp.54-58.
Head, K. K., 1987- Manual of Soil Laboratory Testing (second edition), NewYork, 430P.
Lewis, D.W., and McConchie, D., 1994 - Analytical Sedimentology, Chapman and Hall, London, 197P.
Miall, A D., 1996- The Geology of Fluvial Deposits Sedimentary Facies, Basin Analysis and Petroleum Geology, Springer- Verlag, Berlin, 582 P.
Schwab, G., 1981 - Soil and Water Conservation Engineering, John Wiely, New York.
Whitthaker, JG. and Jaeggi, MNR., 1982- Origin of step-pool systems in mountain streams, American Society of Civil Engineering Proceeding, Journal of Hydraulics Division, 108:758-773.
Scientific Quarterly Journal of Geosciences
Volume 12, 45-46
Autumn & Winter 2003, Vol. 12, No. 45-46
Winter 2002
Pages 36-47