View Full Version : Clay Deposits Donít Prove Existence of Ancient Martian Lakes

2012-Sep-10, 10:00 AM
HiRISE image of branching features in the floor of Antoniadi Crater thought to contain clay material. (NASA/JPL/University of Arizona) In the hunt for evidence of a warmer, wetter past on Mars, clay deposits have been viewed as good indications that stable liquid water existed on its surface for some time — perhaps even long enough [...]

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