Figure 5. Form factor of basalt rocks in and around theInSight lander in Homestead hollow . The shape ofInSight fragments within (green dots), around (yellow dots), and
outside (red dots) the hollow plot as mostly platy, bladed, and
elongate, whereas the blue dashed line indicates the data cloud for the
vast majority of the basalt rocks in ejecta 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).
Purple dots plot the shape of fragments outside the hollow when it is
assumed that the rocks remain embedded 10 cm in the remnant ejecta
deposit and are generally similar to the shape of basalt fragments
defined in terrestrial studies if fully exposed. Field names with
abbreviations are: C - compact, CP - compact platy, CB - compact bladed,
CE - compact elongated, P - platy, B - bladed, E - elongate, VP – very
platy, VB - very bladed, and VE - very elongated. Note that the extreme
shapes of Lonar fragments (VP, VB, and VE) are fewer than other shapes.