Tag Archives: thumbprint terrain

HiRISE: For your consideration

Posted on February 1, 2019 by rburnham

For your consideration. An alien landscape with dust devil streaks and craters slowing fading away into the mists of time. A twilight zone of geology, if you will. (Features like this are often called “thumbprint terrain”.) HiRISE Picture of the … Continue reading →

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Did impact-generated tsunamis make ‘thumbprint terrain’?

Posted on March 29, 2017 by rburnham

Thirty years ago, during a 3-month long visit to the U.S. Geological Survey in Arizona, Francois Costard saw Viking orbiter images of Mars’s northern plains showing strange curving features along the boundary between the Martian northern and southern hemispheres. Costard, … Continue reading →

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THEMIS: South polar textures

Posted on October 7, 2014 by rburnham

THEMIS Image of the Day, October 7, 2014. While yesterday’s VIS image showed a texture of oval depressions (Swiss cheese), today’s VIS image shows a linear surface texture of the south polar cap. This texture is described as looking like … Continue reading →

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