Tag Archives: bedrock

HiRISE: Bedrock outcrops in Kaiser Crater

Posted on March 13, 2017 by rburnham

This enhanced-color image shows a patch of well-exposed bedrock on the floor of Kaiser Crater. The wind has stripped off the overlying soil, and created grooves and scallops in the bedrock. The narrow linear ridges are fractures that have been … Continue reading →

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HiRISE: Bedrock exposures in Juventae Chasma

Posted on March 9, 2017 by rburnham

Bedrock exposures in Juventae Chasma. Beautiful Mars series.

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HiRISE: Floor of Ius Chasma

Posted on March 1, 2017 by rburnham

Floor of Ius Chasma. Beautiful Mars series.

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HiRISE: Colorful bedrock layers

Posted on February 23, 2017 by rburnham

Much of Mars’ surface is covered by fine-grained materials that hide the bedrock, but elsewhere, such as in this scene, the bedrock is well exposed (except where covered by sand dunes). Colors are enhanced in the cutout of a pit … Continue reading →

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HiRISE: Bedrock in Antoniadi Crater

Posted on February 17, 2017 by rburnham

Bedrock in Antoniadi Crater. Beautiful Mars series.

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HiRISE: Better preserved on Mars than on Earth

Posted on February 13, 2017 by rburnham

In many ways, Mars bears remarkable similarities to Earth, but in some ways it is drastically different. Scientists often use Earth as an example, or analog, to help us to understand the geologic history of the Red Planet. As we … Continue reading →

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HiRISE: Hard knocks in Tyrrhena Terra

Posted on February 3, 2017 by rburnham

This enhanced-color image shows a small portion of a dark crater floor in the Tyrrhena Terra region of Mars. This is largely ancient hard bedrock that has been cratered by numerous impacts over the eons. Two other interesting geological features … Continue reading →

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HiRISE: Contact between two distinct types of bedrock northwest of Hellas Planitia

Posted on January 26, 2017 by rburnham

In this context image is an old degraded crater that has undergone a complex history of burial and erosion. The image shows a surface with at least two types of exposed bedrock, one that is light-toned and one that is … Continue reading →

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HiRISE: Bedrock exhumed from the deep

Posted on January 19, 2017 by rburnham

Roadside bedrock outcrops are all too familiar for many who have taken a long road trip through mountainous areas on Earth. Martian craters provide what tectonic mountain building and man’s TNT cannot: crater-exposed bedrock outcrops. Although crater and valley walls … Continue reading →

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HiRISE: Raised bedrock in Terra Cimmeria

Posted on January 5, 2017 by rburnham

Large impact craters have central hills or mountains, because the tremendous shock waves from the impact first compresses the ground, then causes a rebound when it becomes uncompressed. This effectively raises bedrock that was once deeply buried to the surface. … Continue reading →

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