Relative time-scale for channeling events within chaotic terrains, Margaritifer Sinus, Mars

Details Relative time-scale for channeling events within chaotic terrains, Margaritifer Sinus, Mars Relative time-scale for channeling events within chaotic terrains, Margaritifer Sinus, Mars

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pggp.rept..325j&link_type=abstract

In NASA, Washington Repts. of Planetary Geol. and Geophys. Program p 325 (SEE N85-23474 13-91)

Mathematics

Logic

Chronology, Mars (Planet), Planetary Surfaces, Terrain, Climate Change, Craters, Erosion, Floods, Geomorphology

Scientific paper

A relative time scale for ordering channel and chaos forming events was constructed for areas within the Margaritifer Sinus region of Mars. Transection and superposition relationships of channels, chaotic terrain, and the surfaces surrounding them were used to create the relative time scale; crater density studies were not used. Channels and chaos in contact with one another were treated as systems. These systems were in turn treated both separately (in order to understand internal relationships) and as members of the suite of Martian erosional forms (in order to produce a combined, master time scale). Channeling events associated with chaotic terrain development occurred over an extended geomorphic period. The channels can be divided into three convenient groups: those that pre-date intercrater plains development post-plains, pre-chasma systems; and those associated with the development of the Vallis Marineris chasmata. No correlations with cyclic climatic changes, major geologic events in other regions on Mars, or triggering phenomena (for example, specific impact events) were found.

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