Tag Archives: Aeolis Dorsa

HiRISE: Delta-like lobes in Aeolis Dorsa

Posted on December 4, 2018 by rburnham

Delta-like lobes in Aeolis Dorsa. Branching fluvial deposits appear similar to others at Aeolis Dorsa which have been interpreted as delta-like. With HiRISE images and elevation models we would be able to measure deposit thicknesses more accurately. Observations like these … Continue reading →

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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: Geologic contact in Aeolus Dorsa

Posted on October 12, 2015 by rburnham

Geologic contact between fluvial deposits in Aeolus Dorsa — That blue is basaltic (volcanic) sand. Beautiful Mars series.

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Mars air has been cold, thin for 3.6 billion years

Posted on April 21, 2014 by rburnham

The atmosphere of Mars today, 95% carbon dioxide, is cold and thin, with less than 1% of Earth’s surface pressure. Yet long ago, it must have been dense enough to allow rivers and streams to flow in many areas of … Continue reading →

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Aeolis Serpens, Mars’ longest sinuous ridge, is an ancient riverbed

Posted on May 17, 2013 by rburnham

A linear ridge that winds for more than 200 kilometers (120 miles) through part of South Australia was a river channel roughly 10 million years ago. After the paleoriver stopped flowing, silica-rich groundwater seeped into the riverbed, cementing its sediments.

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