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In a new research, a team of scientists has reported new evidence for multiple, water-related geologic processes on Mars, thus indicating that the Red Planet had a complex hydrological past.
“Clearly, these areas were affected by water,” she said. “In some cases, there had to be multiple events. But we don’t know how much water was involved or whether it was always a flowing liquid,” she added
In still another area, clays are buried beneath younger plains along the trough floor, while in the same trough, but a few kilometers away, there are exposures of hydrated silica and calcium sulfate.
According to Weitz, “There could have been active volcanism that produced water by melting snow, ice, or underground, hydrothermal processes. These little basins could then have filled or partially filled with some of that water.”