This is the peer reviewed version of the following article:Fallgatter, C., Kneller, B., Paim, P. S. G. and Milana, J. P. (2017), Transformation, partitioning and flow–deposit interactions during the run-out of megaflows. Sedimentology, 64: 359–387., which has been published in final form at DOI: 10.1111/sed.12307. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.