Weathering processes implied from analysis of small Martian avalanche chutes

Details Weathering processes implied from analysis of small Martian avalanche chutes Weathering processes implied from analysis of small Martian avalanche chutes

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993chwe.work...36s&link_type=abstract

In Lunar and Planetary Inst., MSATT Workshop on Chemical Weathering on Mars p 36-37 (SEE N93-31933 12-91)

Physics

Geomorphology, Mars Surface, Planetary Geology, Soils, Structural Properties (Geology), Weathering, Avalanches, Cohesion, Geochemistry, Internal Friction, Slopes

Scientific paper

It has been proposed that the smaller features of martian spur and gully slope morphology, located along the upper walls of Valles Marineris, are avalanche chutes. A three-dimensional stability back-analysis technique was developed and applied to these small avalanche chutes, yielding average values of cohesion and angle of internal friction for the mobile layer materials on these slopes at the time of each slope failure. Generally, the analysis showed that at the time of each slope failure material strengths had been reduced to those of moderately cohesive debris down through depths of tens of meters. These results have implications and possible constraints for the nature and rate of martian weathering processes.

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