Lithofacies associations and channel flow characteristics associated with a Unit Bar of the Brahmaputra River in Dibrugarh, Assam, INDIA
Sedimentation in a fluvial system leads to the formation of bars with varied morphology, bedform features and internal stratification. These features bear imprints of the hydrodynamic conditions which had prevailed during bar formation and development. The Brahmaputra River of north-east India represents a sandy braided river with very large bedforms and frequent channel migration, switching and avulsion. This study examines the lithofacies types and their associations which had developed in different parts of a Unit Bar of the Brahmaputra River near Dibrugarh, Assam. The study indicates that lithofacies associations in a braided river deposit may show frequent variations due to changes in the prevailing hydrodynamic conditions in the area.
Bristow, C.S., 1987 Brahmaputra River : channel migration and deposition ; in F.G.Ethridge, R.M.Flores and M.D.Harvey, eds., Recent development in fluvial sedimentology; Society of Economic Paleontologists and Mineralogists Special Publication, 39, 63-74.
Cant, D.J. and Walker, R.G., 1978 Fluvial processes and facies sequences in the sandy braided South sasketchewan River, Canada. Sedimentology, 25, 625-648.
Coleman, J.M., 1969 Brahmaputra River : channel processes and sedimentation. Sedimentary Geology, 3, 129-239.
Harbough,J.W. and Bonham-Carter, G., 1970 Computer simulation in Geology; Wiley Interscience, New York, 98p.
Hjulstrom, F., 1939 Transportation of detritus by moving water ; in P.D. Trask (eds.) Recent Marine Sediments, Amer. Assoc. of Petroleum Geologists ( reprinted by Dover in 1955), 5-31.
Miall, A.D., 1978 Lithofacies types and vertical profile models in braided river deposits : a summary; in A.D.Miall (ed.) Fluvial Sedimentology, Canadian Society of Petroleum Geologists Memoir 5, 597-604.
Miall, A.D., 1987 Recent developments in the study of facies models ; in F.G. Ethridge, R.M.Flores and M.D.Harvey, eds., Recent development in fluvial sedimentology; Society of Economic Paleontologists and Mineralogists Special Publication, 39, 1-9.
Miall, A.D., 1990 Principles of Sedimentary Basin Analysis, 2nd ed., Springer-Verlag, New York Berlin Heidelberg London Paris Tokyo Hongkong. 668p. ISBN 3-540-97119-X.
Miller, M.C., Mccave, I.N. and Komar, P.D., 1977 Threshold of sediment motion under unidirectional currents. Sedimentology. 24, 507-527.
Pascoe, E.H., 1919 The early history of the Indua, Ganges and the Brahmaputra. Q.J.G.S.(London)., 75, 138-155.
Pilgrim, G.E., 1919 Suggestions concerning the history of the drainage of Northern India, arising out of a study of the Siwalik Boulder Conglomerate. J.A.S.B., N.S., 15, 81-101.
Sarma, J.N., 2005 Fluvial processes and morphology of the Brahmaputra River in Assam, India. Geomorphology, 70, 226-256.
Shields, A., 1936 Anwendung der Ahulichkeits Mechanik und der Turbulenzforschung auf die Geschiebe Bewegung: Preuss Versuchanstalt fur Wasserbau und Schiffbau, Berlin. 20p.
Smith, N.D., 1974 Sedimentology and bar formation in the Upper Kicking Horse River, a braided outwash stream. J. Geol., 82, 205-223.
Sundborg, A., 1967 Some aspects on fluvial sediments and fluvial morphology. I. General views and graphic methods. Geogr. Ann., 49, 333-343.
- There are currently no refbacks.
This work is licensed under a Creative Commons Attribution 3.0 License.