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

AuthorsBenito, Gerardo ; Mediavilla, F.; Fernández-Pascual, Mercedes ; Márquez, A.; Martínez, J.; Anguita, F.
KeywordsChasma Boreale
North polar cap
Issue Date12-May-1997
PublisherAcademic Press
CitationIcarus 129, 528–538 (1997)
AbstractA 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 109m 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.
Publisher version (URL)http://dx.doi.org/10.1006/icar.1997.5771
Appears in Collections:(IRN) Artículos
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