Tag Archives: alluvial fan deposits

HiRISE: Near Anseris Mons

Posted on August 2, 2019 by rburnham

Near Anseris Mons. The objective of this observation is to examine a possible fan coming from a channel in Anseris Mons, on the outskirts of a dusty area northeast of the Hellas impact basin. HiRISE Picture of the Day archive. … Continue reading →

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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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HiRISE: Fan, meet layered deposit

Posted on March 20, 2019 by rburnham

Fan, meet layered deposit. This is a gorgeous fan reaching out into deposits in east Candor Chasma. Did landslides deform the layered material? HiRISE Picture of the Day archive [More at links]

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HiRISE: Branched ridges in NE Arabia Terra

Posted on November 26, 2018 by rburnham

Branched ridges in northeast Arabia Terra. Could these features be inverted stream channels and a depositional (alluvial) fan? Beautiful Mars series. [More at links]

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HiRISE: Fan with inverted channels

Posted on September 6, 2018 by rburnham

This image shows inverted channels within a fan whose origin could be either fluvial (produced by the action of a stream) or alluvial (created by sedimentary deposits). If the fan is alluvial, then it formed on dry land. If the … 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: Mesa in Gale Crater

Posted on August 21, 2018 by rburnham

A mesa in Gale Crater. This is an intriguing delta (?) within Gale Crater, and this is also the first time we’ve imaged it. Beautiful Mars series. [More at links]

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HiRISE: Fans and valleys

Posted on July 25, 2018 by rburnham

An impact crater approximately 23 kilometers across is home to fan-shaped deposits that extend from the rim and sit on the interior crater floor. Thick beds with varying tone are exposed along the edge of the fan. Shallow valleys that … 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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