Repeated, Cross‐Cutting, and Spatially Migrating Outflow Channel Formation, Grjótá Valles, Mars

The Formation of Valles Marineris, Mars

Introduction: Valles Marineris is the most prominent tectonic feature on Mars, consisting of troughs up to 2000 km in length, 200 km in width, and 10 km in depth. A scenario for trough formation is here proposed that is consistent with the geological and geophysical evidence, and predicts a priori the observed trough depths. The proposed mechanism entails a combination of Tharsis loading over t...

Evidence for remnants of ancient ice-rich deposits: Mangala Valles outflow channel, Mars

Outflow channels represent one of the most dramatic manifestations of the presence, during the Late HesperianAmazonian periods, of huge quantities of liquid water on the surface of Mars. Features associated with outflow channels show evidence for catastrophic water release from the subsurface, extensive overland flow and erosion, ponding in low-lying regions and ultimate return to other water r...

Maja Valles : a Multi - Source Fluvio - Volcanic Outflow Channel System

Comment on "Athabasca Valles, Mars: a lava-draped channel system".

Jaeger et al. (Reports, 21 September 2007, p. 1709) presented images of the Athabasca Valles channel system on Mars and asserted that the observed deposits are composed of thin, fluid lavas. However, all the features they described are secondary and postdate the surface by many millions of years, as documented by structural relationships with small, young impact craters.

Athabasca Valles, Mars: a lava-draped channel system.

Athabasca Valles is a young outflow channel system on Mars that may have been carved by catastrophic water floods. However, images acquired by the High-Resolution Imaging Science Experiment camera onboard the Mars Reconnaissance Orbiter spacecraft reveal that Athabasca Valles is now entirely draped by a thin layer of solidified lava-the remnant of a once-swollen river of molten rock. The lava e...