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Tag Archives: fluvial deposits
Mars had lakes & streams long after early wet era
Lakes and snowmelt-fed streams on Mars formed much later than previously thought possible, according to new findings using data primarily from NASA’s Mars Reconnaissance Orbiter. The recently discovered lakes and streams appeared roughly a billion years after a well-documented, earlier … Continue reading
Posted in Reports
Tagged Arabia Terra, fluvial channels, fluvial deposits, fluvial erosion, fluvial landforms, lakes, paleolakes, streamlined islands
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HiRISE: Ancient rivers
Early in Martian history, liquid water energetically carved the surface, forming channel systems that look remarkably similar to river valleys and drainage networks on Earth. Exactly how these channels formed—by rainfall, snowmelt, or seepage from underground springs — is often … Continue reading
Posted in Reports
Tagged fluvial channels, fluvial deposits, fluvial landforms, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona
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HiRISE: Fine-branched ridges
This image shows numerous branching ridges with various degrees of sinuosity. These branching forms resemble tributaries funneling and draining into larger channel trunks towards the upper portion of the scene. The raised relief of these branching ridges suggests that these … Continue reading
Posted in Reports
Tagged channels, fluvial channels, fluvial deposits, High Resolution Imaging Science Experiment, HiRISE, inverted channels, inverted topography, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona
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Gale Crater river carried pebbles tens of km as bedload on Peace Vallis alluvial fan
Rounded pebbles on Mars were transported for tens of kilometres in a river, suggests a new study published in Nature Communications [October 13, 2015]. This study makes use of a new technique that may help estimate the distance travelled by … Continue reading
Posted in Reports
Tagged conglomerate rocks, Curiosity, fluvial channels, fluvial deposits, Gale Crater, Mars Science Laboratory, MSL
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HiRISE: Geologic contact in Aeolus Dorsa
Geologic contact between fluvial deposits in Aeolus Dorsa — That blue is basaltic (volcanic) sand. Beautiful Mars series.
Posted in Reports
Tagged Aeolis Dorsa, basaltic sand, Beautiful Mars, fluvial deposits, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, sand, sediments, University of Arizona
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