Figure 6. Plot of fragment shape as defined by the ratio of the intermediate to short axis versus the short to intermediate axis after Zingg (1935). There is significant scatter in the data, but the bulk of fragments inside the hollow (green dots) plot near the boundary between discoidal and bladed shapes, whereas fragments along the margin (yellow dots) and outside (red dots) are somewhat more bladed in shape. The large red, yellow, and green dots mark the average of the rocks on the exterior, margin, and interior of the hollow, respectively, and highlight the general similarity in rock shape in and around the hollow. The blue dashed line encompasses the data cloud for the vast majority of basalt ejecta fragments at Lonar crater (Kumar et al., 2014) that is similar to that for basalt rocks in other terrestrial environments (e.g., Ehlmann et al., 2008; Craddock and Golombek, 2016) and are mostly equant (34%) with lesser, but significant disc-, rod- (28%), and blade-shapes (10%). Purple dots are fragments outside the hollow when it is assumed that the rocks remain embedded 10 cm in the surface and are generally similar to the shape of basalt fragments noted in terrestrial studies.