Benito, G.Mediavilla, F.Márquez González, ÁlvaroMartínez, J.Anguita Virella, Francisco2023-06-202023-06-2019970019-1035ARTICLE NO. IS975771https://hdl.handle.net/20.500.14352/59054A 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 paleohydro logical model. It is concluded that the chasma was eroded by a flow whose discharge was on the order of magnitude of 109 m sec21. This catastrophic flow is thought to have been preceded by a powerful sapping process, caused by a 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 wellengjournal articlehttp://www.journals.elsevier.com/icarus/open access550.2MarsChasma bolearGeodinámica2507 Geofísica