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Erosion-resistant Polygonal Ridges Latitude/longitude: -4.80 North, 137.38 East Rationale: These features are widespread in Gale crater and may be cemented.

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Presentation on theme: "Erosion-resistant Polygonal Ridges Latitude/longitude: -4.80 North, 137.38 East Rationale: These features are widespread in Gale crater and may be cemented."— Presentation transcript:

1 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. Next Slide

2 A 1 km PSP_009294_1750 Features of Interest

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

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