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Keyword: sedimentary

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  • Study of Martian Sedimentary Layers Reveals More About the Planet’s Past

    09/19/2017 10:20:31 AM PDT · by BenLurkin · 13 replies
    universe today ^ | 19 Sep , 2017 | Matt Williams
    For years, Aeolis Dorsa has been of interest to scientists since it contains some of the most densely-packed sedimentary layers on Mars, which were deposited by flowing water (aka. fluvial deposits). These deposits are visible from orbit because of the way they have undergone a process known as “topographic inversion” – which consists of deposits filling low river channels, then being exhumed to create incised valleys. By definition, incised valleys are topographic lows produced by “riverine” erosion – i.e. relating to a river or riverbank. On Earth, these valleys are commonly created by rising sea levels, and then filled with...