“…Meanwhile, flame structures can form between the load structures as a response to the downward loading of the adjacent loadcasts, because the flame material, derived from the underlying low-density, fine-grained saturated soft argillaceous sediments, is lighter and more ductile. The lower part of the load structures may, when the loading process continues, eventually become separated from the parent layer, giving rise to balls or ellipsoids and to pillows (ball-and-pillow structures) (Moretti et al, 2002;Du et al, 2007Du et al, , 2008Li, 2008, 2009;Van Loon, 2009, 2014Van Loon and Pisarska-Jamroży, 2014;Qiao and Guo, 2013;Qiao et al, 2011;Su et al, 2013;Gong et al, 2013;Tian et al, 2013Tian et al, , 2014. Load and ball-and-pillow structures continued to subside, causing the overlying loaded sand beds to disappear completely and giving rise to pillow beds (Roep and Everts, 1992).…”