1. Mound-Skirting Unit Outcrop and Inverted Channel Latitude/longitude: -4.75 North, 137.38 East Rationale: This outcrop may be an alluvial fan or part of the extensive “mound-skirting” unit (MSU). Morphology and Mineralogy: A filled channel in the mound ends as a ridge on top of a fan- shaped outcrop with a similar texture to the MSU. The outcrop has a weak pyroxene signature. The surface has a pattern that may be lithified bedforms. What will the rover specifically do here? Test the hypotheses that the outcrop is part of the MSU and the pattern on its surface are bedforms. Use its relationship to the MSU and the channel fill to relate crater floor stratigraphy to mound stratigraphy. Study channel fill as sample of the upper mound. Next Slide

2. Target of Interest A A BB PSP_009149_1750

3. Milliken, 2008 Olivine Smectites Sulfates Sulfates + Phyllosilicates