Chasma Boreale, Mars: A Sapping and Outflow Channel with a Tectono-thermal Origin

Details Chasma Boreale, Mars: A Sapping and Outflow Channel with a Tectono-thermal Origin Chasma Boreale, Mars: A Sapping and Outflow Channel with a Tectono-thermal Origin

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997icar..129..528b&link_type=abstract

Icarus, Volume 129, Issue 2, pp. 528-538.

Mathematics

Logic

29

Scientific paper

A detailed geomorphological study of Chasma Boreale, a widely known feature of Mars' north polar cap, has been carried out for the first time, along with a quantitative paleohydrological model. It is concluded that the chasma was eroded by a flow whose discharge was on the order of magnitude of 10^9 m sec^-1. This catastrophic flow is thought to have been preceded by a powerful sapping process, caused by a tectonically focused thermal event. Several lines of evidence indicate tectonic control in the distribution and present aspect of most of the polar troughs. This tectonic forcing probably played a major role in the inception of not only Chasma Boreale but also other polar reentrants as well.

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