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Tag Archives: sediments
Sublimation of water can levitate sediments for downslope movement
Scientists from The Open University (OU) have discovered a process that could explain the long-debated mystery of how land features on Mars are formed in the absence of significant amounts of water. Experiments carried out in the OU Mars Simulation … Continue reading
HiRISE: Window into the past
The layered sedimentary deposits inside the giant canyons of Mars have puzzled scientists for decades. These light toned deposits have fine, horizontal laminations that are unlike the rugged rim rock of the Valles Marineris. Various ideas for the origin of … Continue reading
Posted in Reports
Tagged Candor Chasma, Ceti Mensa, High Resolution Imaging Science Experiment, HiRISE, ILDs, interior layered deposits, Mars Reconnaissance Orbiter, MRO, NASA, sediments, University of Arizona, Valles Marineris
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HiRISE: A sequence of beauty in Terby Crater
The north-facing wall of a moat-like depression in the middle of Terby Crater exposes a beautiful 400 meter-high sequence of light-toned, repetitive sedimentary layers. These deposits are often obscured by darker-toned patches of material as well as ripples and dunes. … Continue reading
Posted in Reports
Tagged High Resolution Imaging Science Experiment, HiRISE, lacustrine sediments, lake bed sediments, Mars Reconnaissance Orbiter, MRO, NASA, sediments, Terby Crater, University of Arizona
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HiRISE: The White Cliffs of ‘Rover’
This image reminds us of the rugged and open terrain of a stark shore-line, perhaps of an island nation, such as the British Isles. A close-up in enhanced color produces a striking effect, giving the impression of a cloud-covered cliff … Continue reading
Posted in Reports
Tagged basaltic sand, dunes, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, Meridiani Planum, MRO, NASA, sand dunes, sedimentary debris, sediments, sulfates, University of Arizona
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THEMIS: Asimov Crater’s sedimentary infill
THEMIS Image of the Day, May 1, 2017. Today’s false color image shows more of Asimov Crater. Gullies along the crater rim are visible in this image. Where did the crater’s infill come from? What is removing it? The THEMIS … Continue reading
Posted in Reports
Tagged Arizona State University, Asimov Crater, ASU, gullies, Mars Odyssey, NASA, sediments, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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HiRISE: Complex terrain on floor of Hellas Planitia
Complex terrain on the floor of Hellas Planitia. Beautiful Mars series.
Posted in Reports
Tagged Beautiful Mars, Hellas Planitia, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, sedimentary basins, sediments, University of Arizona
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HiRISE: Clinoforms down in Melas Chasma
This group of steeply inclined light-toned layers is bounded above and below by unconformities (sudden or irregular changes from one deposit to another) that indicate a “break” where erosion of pre-existing layers was taking place at a higher rate than … Continue reading
Posted in Reports
Tagged High Resolution Imaging Science Experiment, HiRISE, layered deposits, Mars Reconnaissance Orbiter, Melas Chasma, MRO, NASA, sedimentary basins, sediments, unconformities, University of Arizona
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HiRISE: A sneak peek into Saheki’s secret layers
Saheki Crater is large, about 84 kilometers across, and located in the Southern highlands of Mars, to the north of Hellas Planitia. It’s filled with beautiful alluvial fans that formed when water (likely melting snow) carried fine material, such as … Continue reading
Posted in Reports
Tagged alluvial fans, High Resolution Imaging Science Experiment, HiRISE, layers, Mars Reconnaissance Orbiter, MRO, NASA, Saheki Crater, sediments, University of Arizona
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Sedimentary basins on Mars contain a lot more sediments than we thought!
Planetary Geomorphology Image of the Month, March 30, 2017: Francesco Salese (Italian Space Agency). The nature of the early Martian climate is one of the major unanswered questions of planetary science. To date the geologic evidence that Mars once had … Continue reading
Posted in Reports
Tagged lacustrine sediments, sedimentary basins, sedimentary debris, sediments
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