Articles | Volume 9, issue 6
Earth Surf. Dynam., 9, 1531–1543, 2021
https://doi.org/10.5194/esurf-9-1531-2021
Earth Surf. Dynam., 9, 1531–1543, 2021
https://doi.org/10.5194/esurf-9-1531-2021
Research article
06 Dec 2021
Research article | 06 Dec 2021

Breaking down chipping and fragmentation in sediment transport: the control of material strength

Sophie Bodek and Douglas J. Jerolmack

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Short summary
As rocks are transported, they undergo two attrition mechanisms: chipping, shallow cracking at low collision energies; and fragmentation, significant fracture growth from high-energy impacts. We examine the mass and shape evolution of concrete particles in a rotating drum to experimentally delineate the boundary between chipping and fragmentation. By connecting the mechanics of these attrition processes to resulting shape evolution, we can use particle shape to infer past transport conditions.