Tag Archives: sedimentary deposits

HiRISE: North flank of Ceti Mensa

Posted on November 2, 2018 by rburnham

The north flank of Ceti Mensa. There is some possible soft-sediment deformation in this area. The region has attracted attention because its deep red color in images collected by the Viking Orbiter mission during the 1970s. Beautiful Mars series. [More … Continue reading →

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Trace Gas Orbiter: Juventae Chasma’s layered mound

Posted on October 26, 2018 by rburnham

This striking view of layered sediments on Mars was captured by the ExoMars Trace Gas Orbiter’s Colour and Stereo Surface Imaging System, CaSSIS, on 2 October 2018. The image, which covers an area 25 x 7 km wide, focuses on a … Continue reading →

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HiRISE: The Case of the Lurking Frost

Posted on September 4, 2018 by rburnham

HiRISE and the Case of the Lurking Frost. Sheltered by these cliffs, we can see frost build up, along with lots of sedimentary rocks. This area is also a good candidate for recurring slope lineae. Beautiful Mars series. [More at … Continue reading →

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HiRISE: Semi-sinuous ridge and stratified material in Arabia Terra

Posted on August 15, 2018 by rburnham

Semi-sinuous ridge and stratified material in Arabia Terra. Looks like inverted stream channels that contributed to a lake or pond, with stratified sedimentary rock units in the depression. Important imaging for understanding how to best distinguish cratered, erosion-resistant sedimentary rock … Continue reading →

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HiRISE: Exposed bedrock in Millochau Crater

Posted on August 14, 2018 by rburnham

Exposed bedrock in Millochau Crater. There are some very nice sediments here. The crater measures 115 kilometers in diameter and was named after French astronomer Gaston Millochau. Beautiful Mars series. [More at links]

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Cross-bed geometry in upper Mt. Sharp

Posted on August 1, 2018 by rburnham

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 →

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HiRISE: Layers in Noctis Labyrinthus

Posted on July 20, 2018 by rburnham

Layers in Noctis Labyrinthus. One might suppose that a place named “labyrinth of the night” would have layers of some kind, otherwise it would anticlimactic. Beautiful Mars series. [More at links]

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HiRISE: Cliffs and stratified features in central Arabia Terra

Posted on July 10, 2018 by rburnham

Cliffs and stratified features in central Arabia Terra. Sedimentary rock? Layered materials looked as if mantled by dust. The goal of this observation is to capture some of the variety of erosional expressions  and stratigraphy. Beautiful Mars series. [More at … Continue reading →

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THEMIS: Hebes Mensa

Posted on June 13, 2018 by rburnham

THEMIS Image of the Day, June 13, 2018. Located in the center of Hebes Chasma is a large deposit of layered material called Hebes Mensa. Extensive erosion has created gullies in the mensa and distributed fine sand size materials to … Continue reading →

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HiRISE: Light-toned material in Gorgonum Chaos crater

Posted on June 8, 2018 by rburnham

Light-toned material within the center of a crater in Gorgonum Chaos basin. The rocks within the center of this crater are light-toned and appear altered relative to the rocks that define the crater wall. Beautiful Mars series. [More at links]

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