Tag Archives: Southern Highlands

Dunes decrease in size at high southern latitudes, likely from ground ice cementation

Posted on December 28, 2018 by rburnham

[Editor’s note: From a paper by Maria Banks and seven co-authors recently published in the Journal of Geophysical Research.] Patterns in Mobility and Modification of Middle‐ and High‐Latitude Southern Hemisphere Dunes on Mars • The mobility of dunes and ripples … Continue reading →

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Highland landscapes point to long evolution by low-intensity intermittent erosion

Posted on December 27, 2018 by rburnham

[Editor’s note: From a paper by Jon Cawley and Ross Irwin recently published in the Journal of Geophysical Research.] Evolution of Escarpments, Pediments, and Plains in the Noachian Highlands of Mars • Debris-mantled escarpments, regolith pediments, sloping aggradational surfaces, and … Continue reading →

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CRISM: Hydrated minerals of Cydonia Colles

Posted on December 4, 2018 by rburnham

In this scene we observe the knobs within the northern lowlands (Acidalia Planitia) that are Fe/Mg phyllosilicate-bearing (pink-blue) and small, patchy exposures of hydrated silica (green) surrounding the knobs. Previously, phyllosilicates have only been found within impact craters in the … Continue reading →

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Evolution of Noachian highlands landscapes

Posted on November 29, 2018 by rburnham

[Editor’s note: From a paper by Jon Cawley and Ross Irwin recently published in the Journal of Geophysical Research.] Evolution of Escarpments, Pediments, and Plains in the Noachian Highlands of Mars • Debris‐mantled escarpments, regolith pediments, sloping aggradational surfaces, and … Continue reading →

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HiRISE: Bedrock exposures in the highlands

Posted on October 23, 2018 by rburnham

Bedrock exposures in the highlands. The bedrock here is ancient. Beautiful Mars series. [More at links]

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HiRISE: Channeled southern highlands

Posted on April 30, 2018 by rburnham

This enhanced color image shows the heavily channeled and ancient southern highlands of Mars. The elongated and jagged features are windblown dunes, perhaps hardened and eroded. [More at link]

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HiRISE: Clay deposits in the Southern Highlands

Posted on July 28, 2017 by rburnham

Clay deposits in the Southern Highlands. Beautiful Mars series.

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HiRISE: Within a crater in the Southern Highlands

Posted on July 27, 2017 by rburnham

Within a crater in the Southern Highlands. This is a very ancient crater, long filled-in. You can see polygonal patterns in the terrain, mainly due to the contraction of subsurface ice as the seasons change. Beautiful Mars series.

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THEMIS: Channel cutting through Terra Sirenum

Posted on December 14, 2016 by rburnham

THEMIS Image of the Day, December 14, 2016. The channel in this VIS image is located in Terra Sirenum. More THEMIS Images of the Day by geological topic.

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HiRISE: Valley networks in the ancient highlands

Posted on May 18, 2016 by rburnham

The valley networks on Mars are terrains eroded by flowing water billions of years ago. In places where the bedrock is well exposed, we often see a variety of colors due to altered minerals and polygonal patterns perhaps due to … Continue reading →

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