Analysis of polygonal cracking patterns in chloride-bearing terrains on Mars : Indicators of ancient playa settings

  title={Analysis of polygonal cracking patterns in chloride-bearing terrains on Mars : Indicators of ancient playa settings},
  author={M Ramy El-Maarry and Antoine Pommerol and Nicholas Thomas},
[1] The ancient southern highlands on Mars (~3.5 Gyr old) contain> 600 regions that display spectral evidence in the infrared for the presence of chloride-bearing materials. Many of these locations were previously reported to display polygonal cracking patterns. We studied more than 80 of the chloride-bearing terrains using high-resolution (0.25–0.5 m/pixel) images, as well as near-infrared spectral data, to characterize the surface textures and the associated cracking patterns and mineralogies… CONTINUE READING


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