Tag Archives: sediments

HiRISE: Complex terrain on floor of Hellas Planitia

Complex terrain on the floor of Hellas Planitia. Beautiful Mars series.

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HiRISE: Clinoforms down in Melas Chasma

This group of steeply inclined light-toned layers is bounded above and below by unconformities (sudden or irregular changes from one deposit to another) that indicate a “break” where erosion of pre-existing layers was taking place at a higher rate than … Continue reading

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HiRISE: A sneak peek into Saheki’s secret layers

Saheki Crater is large, about 84 kilometers across, and located in the Southern highlands of Mars, to the north of Hellas Planitia. It’s filled with beautiful alluvial fans that formed when water (likely melting snow) carried fine material, such as … Continue reading

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Sedimentary basins on Mars contain a lot more sediments than we thought!

Planetary Geomorphology Image of the Month, March 30, 2017: Francesco Salese (Italian Space Agency). The nature of the early Martian climate is one of the major unanswered questions of planetary science. To date the geologic evidence that Mars once had … Continue reading

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HiRISE: To great depths

Hellas is an ancient impact structure and is the deepest and broadest enclosed basin on Mars. It measures about 2,300 kilometers across and the floor of the basin, Hellas Planitia, contains the lowest elevations on Mars. The Hellas region can … Continue reading

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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

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HiRISE: Layers in SW Arabia crater

Layers in a crater in southwestern Arabia Terra. Beautiful Mars series.

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THEMIS: Aram Chaos

THEMIS Image of the Day, December 21, 2016. Today’s false color image shows part of Aram Chaos. This is an ancient impact crater that was filled with sediments, flooded, and eroded. The THEMIS VIS camera contains 5 filters. The data … Continue reading

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HiRISE: A glimpse into history

Nothing gets a geologist more excited than layered bedrock, except perhaps finding a fossil or holding a meteorite in your hand. All of these things create a profound feeling of history, the sense of a story that took place ages … Continue reading

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HiRISE: Dipping layers in crater near Reull Vallis

Dipping dots, meet dipping layers. Beautiful Mars series.

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