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Water on Mars 200,000 years ago
Water flowed on the surface of Mars as recently as 200,000 years ago, new research suggests.
A young crater in the planet's southern hemisphere contains well-preserved gullies and sediment deposits thought to have been formed by water. Scientists studying the crater estimated it to be no more than about 200,000 years old, so the water features must have appeared since then.
The crater formed long after the most recent proposed ice age on Mars, which ended some 400,000 years ago.
Lead scientist Dr Andreas Johnsson, from the University of Gothenburg in Sweden, said: "Gullies are common on Mars but the ones which have been studied previously are older, and the sediments where they have formed are associated with the most recent ice age (...)
Features characteristic of debris flows on Earth caused by material being carried and then deposited by fast-moving water were seen in the crater. The Martian landforms were compared with known debris flows on the Norwegian Svalbard islands in the Arctic Ocean
originally posted by: nomickeyshere
a reply to: jeep3r
Great start to a post...but how about water there right now?? Check out Marsanomalieresearch web site for more than a few pictures to give you thoughts the water may be there right now. good hunting
The study crater is situated in the mid-latitudes of the Martian southern hemisphere and superimposed on the "rampart ejecta" of a nearby larger crater.
Rampart ejecta, which display flower-like features, are believed to be the result of a meteor impact on wet or icy ground.
The scientists first thought the recent water flow features had come from preserved ice within the rampart ejecta.
originally posted by: Unity_99
NASA does a lot of photoshopping.
originally posted by: wildespace
Shame the reasearch paper isn't available to the public for free. For one thing, I'd like to know the coordinates of that crater, so that I could look it up in Google Earth and in HiRISE images.
originally posted by: Arken
a reply to: Unity_99
Something like this...
Fountain, Lake and Dam... (Color added. Notice the transparency of the "sands"...)