A new study carried out by experts at the Georgia Institute of Technology (USA), found that found in the rocks and soil of the Red Planet argillaceous rocks, as well as some minerals could be formed only with long-term availability of water on it. Scientists have concluded that the formation of such a large number of Mars clay and other rocks and minerals, it was necessary to make the most of the planet was a long time under water.
A team of researchers led by James Reyem noted that the clay on Mars was first found in 2004 in a few rocks in the crater of an Eagle. She then discovered the rover "Opportunity". Some time later, a lot of clay and sulfate has also been found in certain areas of the Red Planet called Wray, and then in the crater Endeavour in 2009.
The device MRO, designed to study Mars scientists also showed that in different areas of the planet has a lot of clay deposits, in particular, in the plains of Meridiani.
"We have reason to believe that in ancient times a large part of the planet Mars was flooded with water. Discovered by our research aids minerals could be formed only in the presence of large amounts of water, which for a long time was to be on the surface of the Red Planet" - explained James Ray.
Ray and his colleagues believe that Mars once had more clay, but after a volcanic eruption, it was hidden under a layer of lava.