Fig. 8

SSDS details observed in sections XZ: (a) the multilayer consists of sandy gravel, coarse sand and admixture layers consisting of bad-sorted gravelly sand but with grain size fractions similar to the well-sorted layers. (b) Interpretation of the stratigraphic succession, where gravitation collapses at the end of the liquefaction process, is induced by the load at the top of the denser gravel beds over the lower-density coarse sand bottom layers. (c) Due to gravitational segregation, the progressive gradation of gravel to finer pebbles and gravel in a layer from the basin hinges towards the limbs. (d) The appearance of most broken clasts with previous fractures and mechanical discontinuities was observed in section XY (parallel to the abrasion surface). However, the neighboring broken clasts are spatially related and some of the fractures are transgranular.