Crater Floor Stratigraphy Latitude/longitude: -4.57 North, 137.31 East Rationale: Several crater floor units are exposed in close proximity to each other.

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Crater Floor Stratigraphy Latitude/longitude: North, East Rationale: Several crater floor units are exposed in close proximity to each other at this location. Morphology: The high-TI portion of the fan ends here as a thin, fractured unit which appears to overly a smoother hummocky unit similar to the plains in much of the crater floor. The pitted “mound- skirting unit” appears to overlie both of these. What will the rover specifically do here? Determine whether the ridges are erosion-resistant fractures and study their composition to learn more about the post- depositional environment at Gale.

A 1 km PSP_009294_1750 Features of Interest

Milliken, 2008 Olivine Smectites Sulfates Sulfates Sulfates + Phyllosilicates Features of Interest