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Tag Archives: cross-bedding
Cross-bed geometry in upper Mt. Sharp
Planetary Geomorphology Image of the Month, August 1, 2018: One of the most environmentally diagnostic features of sedimentary rocks is cross-bedding, which occurs when sediment is transported by wind, water, or volcanic processes, resulting in horizontal strata composed of inclined … Continue reading
Posted in Reports
Tagged Aeolis Mons, cross-bedding, eolian processes, Gale Crater, Mount Sharp, sedimentary deposits, sediments
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Curiosity panorama shows petrified sand dunes
Some of the dark sandstone in an area being explored by NASA’s Curiosity Mars rover shows texture and inclined bedding structures characteristic of deposits that formed as sand dunes, then were cemented into rock. A panorama from Curiosity’s Mast Camera … Continue reading
Posted in Reports
Tagged Aeolis Mons, cross-bedding, Curiosity, dunes, Gale Crater, Mars Science Laboratory, Mount Sharp, MSL, NASA, sand dunes, Stimson Formation
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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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Evidence of groundwater in Arabia Terra; if on Earth, could permit microbial colonization
Monica Pondrelli [Università d'Annunzio, Italy] and colleagues investigated the Equatorial Layered Deposits (ELDs) of Arabia Terra in Firsoff crater area, Mars, to understand their formation and potential habitability. [Their report appears in the Geological Society of America Bulletin.] On the … Continue reading
Posted in Reports
Tagged Arabia Terra, cross-bedding, ELDs, eo, equatorial layered deposits, Firsoff Crater, groundwater, playas
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Curiosity raw image: Sol 545, February 17, 2014
Flat exposures of layered outcrops, some perhaps with crossbedding. This image was taken by Navcam: Right B (NAV_RIGHT_B) onboard NASA’s Mars rover Curiosity on Sol 545 (2014-02-17 04:50:41 UTC). More Sol 545 images (all cameras).
Posted in Reports
Tagged cross-bedding, Curiosity, Gale Crater, layers, Mars Science Laboratory, MSL, NASA, strata
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