Figure 10.

(a) Bandmap of CRISM image FRT00009D44 where R: LCPINDEX, G: LCP centroid custom parameter, and B: D2300. White rectangles show the locations of HiRISE images in panels (b)–(f). (b) Eroded remnants of LCP-bearing Plateaus Unit (LPU) that have a gradual contact between a particularly bright Fe/Mg-smectite-bearing part of Mixed Lithology Plains Unit (MLPU). (c) Example of LPU elevated compared to MLPU with well-defined edge of plateau (white arrows) with break in slope to MLPU (d) LPU elevated above Stratified Basement Unit exposed in the largest Nili Fossae trough. Additionally, a front of kaolinite-bearing bright materials occur on the edge of the LPU. (e) Eroded LPU overlying Stratified Basement with bluish layers. The same location in HiRISE color can be seen in Figure 9d. (f) Particularly resistant example of Blue Fractured Unit (BFU) forming a full outcrop that stands out compared to surrounding MLPU. Note that the mineralogical boundary between MLPU and BFU is sharp (white arrows). Several smaller angular blocks of BFU can be observed within the MLPU. Examples of putative megabreccia blocks eroded flat occur within the MLPU as well (brown arrows). Large fractures can be observed in the MLPU (purple arrows). All HiRISE images are from HiRISE ESP_016153_2005. All examples from HiRISE DEM have been vertically exaggerated by 3.