Tag Archives: crustal dichotomy

HiRISE: Highlands to lowlands in far-west Arabia

Posted on May 3, 2016 by rburnham

From the highlands to the lowlands in the far western Arabia region. Beautiful Mars series.

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THEMIS: Nepenthes Mensae

Posted on April 13, 2016 by rburnham

THEMIS Image of the Day, April 13, 2016. The hills in this VIS image are part of Nepenthes Mensae, which is located along the margin of Terra Cimmeria. More THEMIS Images of the Day by geological topic.

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THEMIS: Crater in Terra Sabaea

Posted on April 7, 2016 by rburnham

THEMIS Image of the Day, April 7, 2016. This VIS image shows part of the floor of an unnamed crater on the northern edge of Terra Sabaea. Many processes have been at work to modify the initial floor to create … Continue reading →

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Great tilt gave Mars a new face

Posted on March 3, 2016 by rburnham

The surface of the planet Mars tilted by 20 to 25 degrees 3 to 3.5 billion years ago. This was caused by a massive volcanic structure, the Tharsis volcanic dome, which is the largest in the Solar System. Because of … Continue reading →

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THEMIS: Ridges

Posted on February 9, 2016 by rburnham

THEMIS Image of the Day, February 9, 2016. This VIS image shows a small portion of the boundary region between Terra Sabaea and Utopia Planitia. The ridges and valleys in this image were likely created by tectonic faulting. There is … Continue reading →

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HRSC: Crossing the high/low boundary on Mars

Posted on March 12, 2015 by rburnham

On the boundary between the heavily cratered southern highlands and the smooth northern lowlands of Mars is an area rich in features sculpted by water and ice. Cydonia Mensae is a region of mesa-like structures, craters and otherwise smooth terrain. … Continue reading →

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Two-faced Mars: Moon-size object hit south pole

Posted on January 29, 2015 by rburnham

The two hemispheres of Mars are more different from any other planet in our solar system. Non-volcanic, flat lowlands characterise the northern hemisphere, while highlands punctuated by countless volcanoes extend across the southern hemisphere. Although theories and assumptions about the … Continue reading →

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Debris aprons and valley fill hold ancient ice several hundred million years old

Posted on November 14, 2013 by rburnham

Along the edge of the crustal dichotomy, where the southern highlands step down onto the northern plains, lies a landscape of mesas, buttes, and valleys. Valleys appear choked with linear streams of debris, and on the flanks of many mesas … Continue reading →

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