Tag Archives: boulders

HiRISE: Boulders on a landslide

Posted on December 24, 2015 by rburnham

The striking feature in this image is a boulder-covered landslide along a canyon wall. Landslides occur when steep slopes fail, sending a mass of soil and rock to flow downhill, leaving behind a scarp at the top of the slope. … Continue reading →

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HiRISE: Boulders in gully alcoves

Posted on February 13, 2015 by rburnham

Gullies are often found on steep slopes. In the winter, this area is covered with a layer of carbon dioxide ice (dry ice). In the spring, when the ice warms up and transitions to gas, it dislodges material on the … Continue reading →

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Watch for falling rocks

Posted on March 1, 2012 by rburnham

A new investigation of Cerberus Fossae using HiRISE images shows that Mars is probably seismically active now or in the recent past. The clues are tracks left by boulders as they rolled downhill. Gerald Roberts (University of London) and colleagues … Continue reading →

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