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The abrasion of modern and archaeological bones by mobile sediments: the importance of transport modes.

Thompson, C.E.L., Ball, S., Thompson, T.J.U. and Gowland, R (2011) The abrasion of modern and archaeological bones by mobile sediments: the importance of transport modes. Journal of Archaeological Science, 38, (4), pp. 784-793. (doi:10.1016/j.jas.2010.11.001).

Record type: Article


Fresh, weathered, archaeological and fossilized bones were subjected to a series of abrasion experiments using fine sand in an annular flume in order to link bone-surface abrasion to flow regimes and sediment transport modes, compare these effects on bones of different states, and quantify the extent and types of wear occurring. Flow velocities were chosen to replicate the predominant transport modes of bedload, saltation and suspension.

Comparative scanning electron microscopic image analysis was performed to assess the degree and type of wear occurring on each bone type for the different transport modes over a range of exposure periods from 24 to 72 h.

These preliminary investigations have shown that both the amount and type of wear experienced was related to the bone type, duration of exposure and the mode of sediment transport with wear being the result of deformation, rather than cutting wear.

The formation of scour pits in the sand bed on the upstream side of the bone samples significantly reduced wear, and appears to be an important control mechanism for impact related wear that has been overlooked until now.

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Published date: April 2011


Local EPrints ID: 177177
ISSN: 0305-4403
PURE UUID: f7198abb-adfc-47b2-a149-57ff2534df92

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Date deposited: 15 Mar 2011 16:23
Last modified: 18 Jul 2017 12:06

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Author: C.E.L. Thompson
Author: S. Ball
Author: T.J.U. Thompson
Author: R Gowland

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