The geology of the Viking Lander 2 site

Details The geology of the Viking Lander 2 site The geology of the Viking Lander 2 site

Sep 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jgr....82.4452m&link_type=abstract

Journal of Geophysical Research, vol. 82, Sept. 30, 1977, p. 4452-4467.

Mathematics

Logic

59

Geochronology, Geology, Mars Surface, Topography, Viking Lander 2, Albedo, Craters, Lava, Rocks, Viking Lander 1, X Ray Fluorescence

Scientific paper

Models are discussed of several competitive geologic histories that can be hypothesized for the Viking Lander 2 site, none of which is uniquely persuasive. The craft landed on a flat plain of fine-grained sediment overlain by dispersed evenly distributed boulders. The fine-grain material appears to be part of a high-latitude mantle comprising material swept south of the pole regions. The boulders, which are covered by distinctive deep pits, or vesicles, may be the residue of an ejecta deposit from the crater Mie. Alternatively, they may be the remnants of lava flows which formerly covered the region. Polygonal sediment-filled cracks may have been formed by ice wedging, similar to the process that occurs in terrestrial permafrost regions. The possibility that they are desiccation polygons may not be excluded.

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