Tag Archives: alluvial fans

Gale Crater’s late alluvial activity

Posted on July 18, 2019 by rburnham

[Editor’s note: From a paper by John Grant and Sharon Wilson recently published in the Journal of Geophysical Research; related story here.] Evidence for Late Alluvial Activity in Gale Crater, Mars • Local alluvial deposits in Gale crater were likely … Continue reading →

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The largest delta on Mars?

Posted on September 4, 2018 by rburnham

Planetary Geomorphology Image of the Month, September 1, 2018: Jacob Adler (Arizona State University). Ancient river deltas are found in many locations on Mars [see Di Achile & Hynek, 2010 and references therein], and are formed as sediment drops out … Continue reading →

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HiRISE: Fans of Roddy Crater

Posted on July 24, 2018 by rburnham

Alluvial fans are found on Earth, Mars, and even Saturn’s moon, Titan. Roddy Crater on Mars is home to several large alluvial fans, which formed as water moved sediment from the mountainous crater rim and deposited it onto the flatter … Continue reading →

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HiRISE: Fans in east Coprates Montes

Posted on July 9, 2018 by rburnham

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

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HiRISE: Alluvial fan in Murray Crater

Posted on May 23, 2018 by rburnham

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

Posted on April 24, 2018 by rburnham

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

Posted on April 2, 2018 by rburnham

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

Posted on March 6, 2018 by rburnham

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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HiRISE: Fresh shallow valleys and fans in north Arabia Terra

Posted on February 27, 2018 by rburnham

Fresh shallow valleys and fans in north Arabia Terra. Beautiful Mars series.

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THEMIS: Possible delta in Ius Chasma?

Posted on February 26, 2018 by rburnham

THEMIS Image of the Day, February 26, 2018. This VIS image shows part of eastern Ius Chasma. The lower elevations of Geryon Montes are located at the top of the image. Between the montes and the southern wall face is … Continue reading →

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