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Tag Archives: northern plains
THEMIS: Patterns on patterns in the Olympia Undae dunes
THEMIS Image of the Day, July 19, 2019. Today’s VIS image shows a small portion of Olympia Undae. Olympia Undae is a large dune field that dominates the plains along part of the north polar cap. This image was collected … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, Mars Odyssey, NASA, north polar sand sea, northern plains, Olympia Undae, sand, sand dunes, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System, wind
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Did the Lomonosov Crater impact create a mega-tsunami?
[Editor’s note: From a paper by François Costard and eight co-authors recently published in the Journal of Geophysical Research.] The Lomonosov Crater Impact Event: A Possible Mega‐Tsunami Source on Mars • Unusual morphometric characteristics of Lomonosov crater in comparison to … Continue reading
Posted in Reports
Tagged asteroid impacts, impact craters, impact processes, Lomonosov Crater, northern ocean, northern plains, tsumani
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HiRISE: Cratered cones on northern plains
Cratered cones on northern plains. The title alone sounds delicious. These cratered cones might be mud volcanoes, landforms created by the eruption of mud or slurries, water and gases. No lava involved. HiRISE Picture of the Day archive. [More at … Continue reading
Posted in Reports
Tagged High Resolution Imaging Science Experiment, HiPOD, HiRISE, HiRISE Picture of the Day, Mars Reconnaissance Orbiter, MRO, mud volcanos, NASA, northern plains, rootless cones, University of Arizona
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CRISM: Olivine and pyroxene in ejecta from northern plains crater
CRISM scene HRL00003BEE covers an area in close proximity to a crater in the northern plains of Mars. In this image, we see strong Fe-rich olivine (yellow) and high calcium pyroxene (HCP, blue) signatures in the ejecta near the crater … Continue reading
Posted in Reports
Tagged Compact Reconnaissance Imaging Spectrometer for Mars, crater ejecta, CRISM, mafic minerals, Mars Reconnaissance Orbiter, MRO, NASA, northern lowlands, northern plains
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THEMIS: Ice-rich mantling in Utopia crater
THEMIS Image of the Day, April 16, 2019. This false-color VIS image shows a crater located in Utopia Planitia. The crater’s interior shows ample evidence for an ice-rich mantling material that has slipped and slumped away from the crater’s upraised … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, false color, ground ice, ice-rich mantling, Mars Odyssey, NASA, northern lowlands, northern plains, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System, Utopia Planitia
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HiRISE: Frost-covered dunes
Frost-covered dunes. Sprinkled with hopes and dreams, no less. This is a relatively new monitoring site that seems to have heavy carbon-dioxide snowfall. HiRISE Picture of the Day archive [More at links]
Posted in Reports
Tagged CO2 frost, dunes, frost, High Resolution Imaging Science Experiment, HiPOD, HiRISE, HiRISE Picture of the Day, Mars Reconnaissance Orbiter, MRO, NASA, northern lowlands, northern plains, sand dunes, seasonal processes, snow, University of Arizona
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HiRISE: For your consideration
For your consideration. An alien landscape with dust devil streaks and craters slowing fading away into the mists of time. A twilight zone of geology, if you will. (Features like this are often called “thumbprint terrain”.) HiRISE Picture of the … Continue reading
Posted in Reports
Tagged Diacria, dust devil tracks, High Resolution Imaging Science Experiment, HiPOD, HiRISE, HiRISE Picture of the Day, Mars Reconnaissance Orbiter, MRO, NASA, northern lowlands, northern plains, thumbprint terrain, University of Arizona
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CRISM: Hydrated minerals of Cydonia Colles
In this scene we observe the knobs within the northern lowlands (Acidalia Planitia) that are Fe/Mg phyllosilicate-bearing (pink-blue) and small, patchy exposures of hydrated silica (green) surrounding the knobs. Previously, phyllosilicates have only been found within impact craters in the … Continue reading
Posted in Reports
Tagged Acidalia Planitia, clay minerals, Compact Reconnaissance Imaging Spectrometer for Mars, CRISM, crustal dichotomy, Cydonia Colles, hydrated silica, iron-magnesium phyllosilicates, Mars Reconnaissance Orbiter, MRO, NASA, northern lowlands, northern plains, phyllosilicates, plains, Southern Highlands
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THEMIS: Subdued northern plains craters
THEMIS Image of the Day, October 10, 2018. This VIS image shows the margin and ejecta surrounding two craters located in the northern plains. The rim and ejecta are very subdued compared to craters elsewhere in the same region. The … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, false color, Mars Odyssey, NASA, northern lowlands, northern plains, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System
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THEMIS: Blast zone at Lonar Crater
THEMIS Image of the Day, May 7, 2018. This VIS image shows the part of the crater rim and ejecta surrounding Lonar Crater in the northern plains of Vastitas Borealis. There is a fine scale, radial grooved outer layer of … Continue reading
Posted in Reports
Tagged Arizona State University, ASU, ground ice, groundwater, Lonar Crater, Mars Odyssey, NASA, northern plains, rampart craters, rampart ejecta, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System, Vastitas Borealis
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