Figure 14.

HiRISE image of steep exposed scarp of Hephaestus Fossae in southern Utopia Planitia at 21.9°N, 122.0°E. The image shows cratered plains in the upper right, with the scarp exposing ∼10 m thick, relatively fine grained regolith that grades into blocky, coarse breccia that overlies strong, jointed bedrock below. The talus is below the bedrock in the exposed scarp. This near‐surface stratigraphy is indicated by rocky ejecta craters, concentric or nested craters, and fragmentation theory for the InSight landing site (Golombek et al., 2017; Warner et al., 2017). Portion of HiRISE image PSP_002359_2020.