Tag Archives: alluvial fan deposits

HiRISE: Fans in east Coprates Montes

Dark be the fans in east Coprates Montes. Beautiful Mars series. [More at links]

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Nirgal Vallis flow built an alluvial fan in Uzboi Vallis relatively recently

[Editor’s note: From a paper by Sharon Wilson and three co-authors recently published in the Journal of Geophysical Research.] • We identify and characterize a deposit (upper and lower units) on the floor of Uzboi Vallis near the confluence of … Continue reading

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HiRISE: Alluvial fan in Murray Crater

Alluvial fan in Murray Crater. Alluvial fans are among the strongest lines of evidence that liquid water once flowed on the surface of Mars. Beautiful Mars series. [More at links]

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HiRISE: Alluvial fans in NE Mojave Crater

Alluvial fans in northeastern Mojave Crater. Mojave Crater is a perennial favorite of ours for the clear signs of these alluvial fans that might indicate it once rained on Mars a very long time ago. Beautiful Mars series. [More at links]

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Stepped fans and phyllosilicates on Mars

Planetary Geomorphology Image of the Month, April 1, 2018: Peter Grindrod (Natural History Museum, London, UK). A number of different studies have catalogued features on Mars that could be given the general heading of sedimentary fans… These features occur whenever … Continue reading

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HiRISE: Big fans

Alluvial fans are fan-shaped deposits emerging from regions of steep topography. Alluvial fans on Mars are thought to be ancient and record past episodes of flowing water. This image shows part of one of those fans, which has been eroded. … Continue reading

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Curiosity: Profiling an finely layered outcrop

Sol 1890, November 30, 2017. Rover scientists commanded the Remote Micro-Imager’s long-range eye to take a 10-frame profile along the edge of a finely layered outcrop, possibly an alluvial fan-like deposit. Click the image to enlarge it. Sol 1890 raw … Continue reading

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HiRISE: Stratified fan material in Baltisk Crater

Stratified fan material in Baltisk Crater. Beautiful Mars series.

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HiRISE: A closer look at Holden Crater

Holden Crater in southern Margaritifer Terra displays a series of finely layered deposits on its floor (white and light purple in an enhanced color image). The layered deposits are especially well exposed in the southwestern section of the crater where … 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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