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Tag Archives: lake bed sediments
HiRISE: Layers in Tikhonravov
Layers in Tikhonravov. The objective of this observation is to examine layers outside of a crater within the 344-kilometer diameter Tikhonravov Crater. Tikhonravov is believed to have once held a giant lake and was named after Mikhail Tikhonravov, a Russian … Continue reading
Evidence for fluvial deposition in Arabia Terra
[Editor’s note: From a paper by Joel Davis and six co-authors recently published in the Journal of Geophysical Research.] A Diverse Array of Fluvial Depositional Systems in Arabia Terra: Evidence for mid‐Noachian to Early Hesperian Rivers on Mars • Fluvial … Continue reading
Posted in Reports
Tagged Arabia Terra, fluvial channels, fluvial deposits, fluvial erosion, fluvial landforms, fluvial processes, inverted channels, lacustrine sediments, lake bed sediments, open-basin lakes, paleolakes, sedimentary deposits, sinuous ridge, valleys
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Curiosity: Mastcam, near and far
Sol 2468, July 17, 2019. The wide-angle (34mm) Mastcam shot an outcrop next to Curiosity that shows layered sediments on the left and a different texture on the right. Below is a five-frame sequence looking toward a local rise and … Continue reading
Posted in Reports
Tagged Aeolis Mons, CBU, clay-bearing unit, Curiosity, Gale Crater, Glen Torridon, impact craters, lake bed sediments, layered deposits, Mars Science Laboratory, Mount Sharp, MSL, Murray Formation, NASA, Sandside Harbour, sedimentary deposits
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River and lake landforms in Melas Chasma
[Editor’s note: From a paper by Joel Davis and five co-authors recently published in the Journal of Geophysical Research.] Episodic and Declining Fluvial Processes in Southwest Melas Chasma, Valles Marineris, Mars • Episodic fluvial processes occurred in the southwest Melas … Continue reading
Posted in Reports
Tagged climate change, fluvial landforms, fluvial processes, lake bed sediments, Melas Chasma, open-basin lakes, paleolakes, Valles Marineris
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Mud cracks help reveal the shape of water on Mars
As Curiosity rover marches across Mars, the red planet’s watery past comes into clearer focus. In early 2017 scientists announced the discovery of possible desiccation cracks in Gale Crater, which was filled by lakes 3.5 billion years ago. Now, a … Continue reading
Posted in Reports
Tagged Aeolis Mons, Curiosity, desiccation cracks, Gale Crater, lake bed sediments, Mars Science Laboratory, Mount Sharp, MSL, mud cracks, Murray Formation, NASA, Old Soaker, Squid Cove, Vera Rubin Ridge
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HiRISE: Horse playing the flute
Horse playing the flute. Maybe you can see a horse playing a flute here, but really this is a portion of the floor of Eberswalde Crater, at one time candidate landing site for the Mars Science Laboratory. The light-toned bedrock … Continue reading
Posted in Reports
Tagged Beautiful Mars, bedrock, Eberswalde Crater, eolian processes, High Resolution Imaging Science Experiment, HiRISE, lacustrine sediments, lake bed sediments, landing sites, Mars Reconnaissance Orbiter, MRO, NASA, sand, sand dunes, University of Arizona
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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: Lakebeds in Holden Crater
Holden Crater was once filled by at least two different lakes. The sediments deposited in those lakes are relatively light-toned where exposed, as we see in this observation. Each layer represents a different point in time and perhaps a changing … Continue reading
Posted in Reports
Tagged crater lakes, High Resolution Imaging Science Experiment, HiRISE, Holden Crater, lake bed sediments, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona
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HiRISE: Fans and crater floor deposits southeast of Vinogradov Crater
This white, purple, and pink surface is located on the floor of an impact crater on the southeast rim of the larger Vinogradov Crater in southern Margaritifer Terra. The surface consists of what is left of a series of thin … Continue reading
Posted in Reports
Tagged alluvial fan deposits, High Resolution Imaging Science Experiment, HiRISE, lacustrine sediments, lake bed sediments, layers, Margaritifer Terra, Mars Reconnaissance Orbiter, MRO, NASA, playas, sediments, University of Arizona, Vinogradov Crater
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