Gary sent in the link www.dailymail.co.uk/sciencetech/article-10041411/ … Mars surface was carved by fast and furious floods from overflowing craters – with enough water released in a matter of weeks to completely fill Lake Superior. See also https://phys.org/news/2021-09-mars-surface-fast-furious-craters.html … on earth river erosion is usually seen as a long and very slow process – although there are exceptions [such as the scablands]. On Mars, massive floods from overflowing crater lakes played a role in shaping the surface of the red planet, we are told. They carved out deep chasms and moved vast amounts of sediment. This is according to a new study by the University of Texas in Austin [published in Nature 29th September 2021]. The floods, they claim, lasted a matter of weeks, yet they eroded more than enough sediment to fill up both Lake Superior and Lake Ontario. In the understatement of the year, they add, this is a bit of a surprising finding – as they have long been thought to one off anomalies, craters. We are told crater lakes were once common on Mars, apparently billions of years ago. There is thought to have been lots of water on Mars but this is dated long ago, shunted into the outer reaches well beyond the present day. Remote sensing images taken by satellites orbiting Mars have allowed scientists to study the remains of breached Martian crater lakes. Some 263 of them show evidence of being breached spilling water in a catastrophic outpouring [s]. The Daily Mail link has a lot of images from Mas. What caused the lakes to breach? They tipped, we are told. Did Mars move at its axis of rotation? Is that what caused the lakes to tip. How else can catastrophic flooding have occurred?
Now, it that was applied to water scouring on earth ….