Figure 10.

Olivine, carbonate, phyllosilicate, and silica‐bearing unconsolidated material in crater floor fractured 2 unit. (a) THEMIS thermal inertia map from Edwards and Buz (2021) covering region of interest. The CRISM pixels for the spectra in panel (e), which are within the red outlines, cover dunes and unconsolidated dark‐toned material that has low thermal inertia. (b) Enlarged view of dunes and dark‐toned unconsolidated dark‐toned material overlying bedrock, which in some locations protrudes through this material. (c) Enlarged view of dunes and knobby bedrock that is covered by dark‐toned unconsolidated material. (d) Enlarged view of dunes and unconsolidated dark‐toned material overlying bedrock. (e) UMass, TRR3, and TER processed CRISM spectra (red) from pixels shown in panel (b) compared to library spectra (black). The spectral features are the same as those described for bedrock in Figure 9, implying that the dunes and unconsolidated dark‐toned material are locally sourced and have the same composition as the proximal and underlying crater floor fractured 2 unit bedrock.