Mass Wasting and Ground Collapse in Terrains of Volatile-Rich Deposits as a Solar System-Wide Geological Process: The Pre-Galileo View

Details Mass Wasting and Ground Collapse in Terrains of Volatile-Rich Deposits as a Solar System-Wide Geological Process: The Pre-Galileo View Mass Wasting and Ground Collapse in Terrains of Volatile-Rich Deposits as a Solar System-Wide Geological Process: The Pre-Galileo View

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..901m&link_type=abstract

Lunar and Planetary Science, volume 27, page 901

Mathematics

Logic

Europa, Ganymede, Io, Mars: Polar Processes, Triton

Scientific paper

The polar terrains of Mars are covered in many places with irregular pits and retreating scarps, as are some of the surfaces of the outer-planet satellites (e.g., Io, Europa, and Triton). These features are diagnostic of exogenic degradation due to the loss of a volatile rock-forming matrix or cement. It has gone generally unrecognized that the same (or very similar) geologic process responsible for the martian polar terrains also operates on some of the outer-planet satellites. The development of many of the scarps on Triton, and the depressions they surround, appears to involve scarp recession, as the planimetric traces of these scarps are inconsistent with formation either by faulting or as flow fronts. Scarp recession can occur on the Earth when a structural or stratigraphic inhomogeneity near the scarp base is mechanically weakened. On Triton, where conditions are unfavorable for some of the processes which cause scarp retreat such as erosion by abrasion from wind, rainfall, or channelized running fluid, mechanical weakening of material exposed in the face of a scarp probably involves the loss of a cementing or matrix-forming material by sublimation.

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