Bar-top hollows: a new element in the architecture of sandy braided rivers

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 0037-0738

Full text not available from this repository.

Abstract

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
Depositing User: Converis
Date Deposited: 23 Nov 2006
Last Modified: 17 Apr 2014 11:00
URI: http://eprints.brighton.ac.uk/id/eprint/390

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year