Tag Archives: sedimentary deposits

HiRISE: The Case of the Lurking Frost

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

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

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

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

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

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

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

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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HiRISE: Stair-stepped hill in central Arabia Terra

Stair-stepped hill in central Arabia Terra. Stratified material eroded so as to look something like a wedding cake. A cliff-bench slope expression, apparently mantled with dust, each layer is roughly the same thickness as the next. Beautiful Mars series. [More … Continue reading

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HiRISE: Colorful layers in Ariadnes Colles

This image shows bedrock layers of diverse colors and composition. [More at link]

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