Best, J.L., ASHWORTH, PHILIP, Woodward, J., Sambrook-Smith, G.H. and Simpson, C.J. (2006) Bar-top hollows: a new element in the architecture of sandy braided rivers Sedimentary Geology, 190. pp. 241-255. ISSN 0037-0738Full text not available from this repository.
Discrete hollows in the bar tops of the South Saskatchewan River are described that form a newly-recognized morphological element of sandy braided rivers. These bar-top hollows, which are up to 1.7 m deep and may extend for 10–30 m down and across flow, have a circular to ovoid planform and are shown, through use of ground penetrating radar, to be filled by a series of distinct, often angle-of-repose, foresets. The hollows form by both erosion and bar-top deposition, and may be generated by bar-tail accretion, cross-bar channel cutoff and subsequent fill or lateral accretion at the bar-head. Bar-top hollows occur in the upper part of the bar depositional sequence and may thus prove useful indicators for braid bar reconstruction in ancient sediments, and should not be confused with channel scour.
|Item Type:||Journal article|
|Uncontrolled Keywords:||Bar-top hollows; Braided rivers; Ground penetrating radar; South Saskatchewan River|
|Subjects:||F000 Physical Sciences > F800 Physical Geography and Environmental Sciences|
|DOI (a stable link to the resource):||10.1016/j.sedgeo.2006.05.022|
|Faculties:||Faculty of Science and Engineering > School of Environment and Technology > Applied Geosciences
Faculty of Science and Engineering > School of Environment and Technology
|Date Deposited:||23 Nov 2006|
|Last Modified:||17 Apr 2014 11:00|
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