Erosion-resistant Polygonal Ridges Latitude/longitude:-4.80 North, 137.38 East

Rationale: These features are widespread in Gale crater and may be cemented or altered fractures or fracture fill.

Morphology and Mineralogy: Polygonal positive-relief erosion-resistant ridges occurring in the sulfate-bearing, yardang-forming portion of the mound.

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.

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A

1 km

PSP_009294_1750

Features of Interest

Milliken, 2008Olivine Smectites Sulfates Sulfates

Sulfates + Phyllosilicates

Features of Interest