Tag Archives: fluvial landforms

THEMIS: Channels flowing from a ridge

Posted on November 9, 2018 by rburnham

THEMIS Image of the Day, November 9, 2018. This VIS image is located in Terra Sirenum. The bright linear feature at the bottom of the image is the crest of a ridge. The multiple channel features toward the top of … Continue reading →

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Mars & Earth river deltas branch in similar ways

Posted on October 16, 2018 by rburnham

Planetary Geomorphology Image of the Month, October 16, 2018: Robert C. Mahon (University of New Orleans). Which morphologic features of sedimentary systems persist into the stratigraphic record? Ancient river deltas preserved as stratigraphic deposits on both Earth and Mars exhibit … Continue reading →

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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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River and lake landforms in Melas Chasma

Posted on August 30, 2018 by rburnham

[Editor’s note: From a paper by Joel Davis and five co-authors recently published in the Journal of Geophysical Research.] Episodic and Declining Fluvial Processes in Southwest Melas Chasma, Valles Marineris, Mars • Episodic fluvial processes occurred in the southwest Melas … Continue reading →

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THEMIS: Winding channel of Nanedi Valles

Posted on March 30, 2018 by rburnham

THEMIS Image of the Day, March 30, 2018. This VIS image shows a section of Nanedi Valles, located in Xanthe Terra. More THEMIS Images of the Day by geological topic.

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Inverted terrain shows ancient stream-flow details

Posted on September 18, 2017 by rburnham

River deposits exist across the surface of Mars and record a surface environment from over 3.5 billion years ago that was able to support liquid water at the surface. A region of Mars named Aeolis Dorsa contains some of the … Continue reading →

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HiRISE: Cataracts in Kasei Valles

Posted on August 8, 2017 by rburnham

Obviously these are not the kind of cataracts that can develop in the lenses of your eyes, but large erosional scallops that form in river channels, like the Niagara Falls draining the Great Lakes of North America. Cataracts are large … Continue reading →

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HiRISE: Distinctive brightness

Posted on March 30, 2017 by rburnham

This full-resolution image is centered on a bright deposit at the end of a gully channel. The bright deposit does not seem to be present in an image acquired several years earlier than 2009, and is likely to be very … Continue reading →

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HiRISE: Martian meanders and scroll-bars

Posted on March 1, 2017 by rburnham

This is a portion of an inverted fluvial channel in the region of Aeolis / Zephyria Plana, at the Martian equator. Channels become inverted when the sediments filling them become more resistant to erosion than the surrounding material. Here, the … Continue reading →

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