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A small‐scale flood plain
Author(s) -
HUGHES DENIS A.,
LEWIN JOHN
Publication year - 1982
Publication title -
sedimentology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.494
H-Index - 108
eISSN - 1365-3091
pISSN - 0037-0746
DOI - 10.1111/j.1365-3091.1982.tb00092.x
Subject(s) - overbank , floodplain , geology , meander (mathematics) , sorting , crevasse , geomorphology , sediment , sedimentary depositional environment , sedimentation , channel (broadcasting) , hydrology (agriculture) , geotechnical engineering , geometry , geography , cartography , mathematics , engineering , structural basin , computer science , electrical engineering , programming language
A miniature, 9 m‐wide floodplain, developed along a gravel‐washing effluent stream, shows features such as levées, crevasse splays and floodbasins which compare with their larger‐scale counterparts. For sediments deposited overbank, median size decreases exponentially with distance from the channel whilst sorting increases, with coarser sediment on the outside of a meander bend. Overbank flows are only a few grain diameters in depth near the channel. This study shows potentially useful systematic relationships in floodplain sediment textures, but it involves only one of a possible variety of floodplain types dominated by overbank sedimentation. This suggests that further exploration of overbank depositional processes is desirable as an aid to field interpretation.