Soil-like deposits observed by Sojourner, the Pathfinder rover

Details Soil-like deposits observed by Sojourner, the Pathfinder rover Soil-like deposits observed by Sojourner, the Pathfinder rover

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999jgr...104.8729m&link_type=abstract

Journal of Geophysical Research, Volume 104, Issue E4, p. 8729-8746

Other

65

Planetology: Solid Surface Planets: Surface Materials And Properties

Scientific paper

Most of the soil-like materials at the Pathfinder landing site behave like moderately dense soils on Earth with friction angles near 34°-39° and are called cloddy deposits. Cloddy deposits appear to be poorly sorted with dust-sized to granule-sized mineral or rock grains; they may contain pebbles, small rock fragments, and clods. Thin deposits of porous, compressible drifts with friction angles near 26°-28° are also present. Drifts are fine grained. Cohesions of both types of deposits are small. There may be indurated soil-like deposits and/or coated or crusted rocks. Cloddy deposits may be fluvial sediments of the Ares-Tiu floods, but other origins, such as ejecta from nearby impact craters, should be considered. Drifts are probably dusts that settled from the Martian atmosphere. Remote-sensing signatures of the deposits inferred from rover observations are consistent with those observed from orbit and Earth.

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