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Tag Archives: sedimentary debris
Many bedrock plains are clastic rocks, not lavas
The Martian surface is dominated by loose dust, sands, and rocks, but high spatial resolution imaging has permitted the detection of numerous flat-lying exposures of ancient, intact bedrock. These “bedrock plains” have previously been interpreted as lava sequences, perhaps similar … Continue reading
Posted in Reports
Tagged airfall deposits, bedrock, lava plains, plains, regolith, sedimentary debris, volcanic ash
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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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HiRISE: Layers along a mesa in Hellas Planitia
Layers along a mesa in Hellas Planitia. Beautiful Mars series.
Posted in Reports
Tagged Hellas Planitia, layered deposits, layers, mesas, sedimentary debris
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HiRISE: Windblown sand in Ganges Chasma
Dark, windblown sand covers intricate sedimentary rock layers in this image from Ganges Chasma, a canyon in the Valles Marineris system. These features are at once familiar and unusual to those familiar with Earth’s beaches and deserts. Most sand dunes … Continue reading
Posted in Reports
Tagged active dunes, basaltic sand, Ganges Chasma, High Resolution Imaging Science Experiment, HiRISE, layers, Mars Reconnaissance Orbiter, MRO, NASA, sand, sand dunes, sedimentary debris, 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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HiRISE: Cracked crater on a graben floor
Modified crater on graben floor. Beautiful Mars series.
Posted in Reports
Tagged Beautiful Mars, graben, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, sedimentary debris, tectonics, University of Arizona
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THEMIS: What is filling Terby Crater?
THEMIS Image of the Day, September 16, 2016. Today’s false color image shows part of Terby Crater, which has thick sediments filling much of its interior. These sediments should preserve a long record of Martian history, possibly including a time when … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, crater infill, Mars Odyssey, NASA, sedimentary debris, Terby Crater, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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HiRISE: Gullied crater in the Northern Hemisphere
Gullied crater in the Northern Hemisphere — With quite a lovely sedimentary fan. Beautiful Mars series.
Posted in Reports
Tagged alluvial fans, Beautiful Mars, erosion, gullies, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, mass wasting, MRO, NASA, sedimentary debris, University of Arizona
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HiRISE: Diverse deposits in Melas Chasma
This scene includes chaotic deposits with a wide range of colors. The deposits are distinctive with both unique colors and small-scale textures such as fracture patterns. These are probably sedimentary rocks, transported and deposited in water or air. The original … Continue reading
Posted in Reports
Tagged High Resolution Imaging Science Experiment, HiRISE, interior layered deposits, layered deposits, layers, Mars Reconnaissance Orbiter, MRO, NASA, sedimentary debris, sediments, University of Arizona, Valles Marineris
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Curiosity: Closeup on Mt. Shields layers
Sol 974, May 3, 2015. The MAHLI camera shot an overlapping series of closeup images on the Mt. Shields outcrop. Thinly layered resistant beds alternate with more easily eroded ones in a pattern suggesting repetitive deposition. Some cross-bedding is also … Continue reading
Posted in Reports
Tagged Aeolis Mons, cross-bedding, Curiosity, Gale Crater, layers, Logan's Run, Mars Science Laboratory, Mount Sharp, MSL, Mt. Shields, NASA, sedimentary debris, sediments
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