Supplementary figures Supplementary figure 1 Supplementary figure A Supplementary figure B Supplementary figure C Supplementary figure D Supplementary figure E Supplementary figure F Supplementary figure G This dataset consists of images which support the linked publication in Sedimentary Geology. The images are of clastic sediments, including cross-stratified sands and gravels of Holocene age that were deposited along the southern shores of palaeolake Mega-Chad.