Candor Chasma

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Candor Chasma
Candor Chasma THEMIS mosaic.jpg
Candor Chasma in mosaic of THEMIS infrared images, with parts of Ophir, Melas and Juventae chasmata at top, lower left and extreme upper right, respectively. Massive landslide deposits, the Melas Labes, are visible near the junction of Candor and Melas chasmata at bottom, just left of center.
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Length 773.238

Candor Chasma is one of the largest canyons in the Valles Marineris canyon system on Mars. The feature is geographically divided into two halves: East and West Candor Chasmas, respectively. It is unclear how the canyon originally formed; one theory is that it was expanded and deepened by tectonic processes similar to a graben, while another suggests that it was formed by subsurface water erosion similar to a karst.[1] MRO discovered sulfates, hydrated sulfates, and iron oxides in Candor Chasma.[2]


  1. ESA - Mars Express - Walls of Candor Chasma
  2. Murchie, S. et al. 2009. A synthesis of Martian aqueous mineralogy after 1 Mars year of observations from the Mars Reconnaissance Orbiter. Journal of Geophysical Research: 114.

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