Mathematics – Logic
Scientific paper
Jun 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981m%26p....24..415l&link_type=abstract
Moon and the Planets, vol. 24, June 1981, p. 415-429.
Mathematics
Logic
19
Equatorial Regions, Escarpments, Geomorphology, Mars Surface, Planetary Geology, Ridges, Meteorite Craters, Mountains, Planetology, Plateaus, Viking Mars Program
Scientific paper
The morphology and distribution of ridges and scarps on Mars in the + or - 30 deg latitude belt were investigated. Two distinct types of ridges were recognized. The first is long and linear, resembling mare ridges on the moon; it occurs mostly in plains areas. The other is composed of short, anastomosing segments and occurs mostly in ancient cratered terrain and intervening plateaus. Where ridges are eroded, landscape configurations suggest that they are located along regional structures. The age of ridges is uncertain, but some are as young as the latest documented volcanic activity on Mars. The origins of ridges are probably diverse - they may result from wrinkling due to compression or from buckling due to settling over subsurface structures. The similar morphologic expressions of ridge types of various origins may be related to a similar deformation mechanism caused by two main factors: (1) that most ridges are developed in thick layers of competent materials and (2) that ridges formed under stresses near a free surface.
Klockenbrink J. L.
Lucchitta Baerbel Koesters
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