Tag Archives: craters

HiRISE: Colorful bedrock in crater’s central uplift

Posted on July 22, 2016 by rburnham

Large impact craters rebound from the initial shock, raising deep bedrock to the surface in the central uplift of the crater. Often this bedrock has greater compositional diversity than the surface layers, because they are from greater depths, older, jumbled, … Continue reading →

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THEMIS: Channel between two craters

Posted on July 19, 2016 by rburnham

THEMIS Image of the Day, July 19, 2016. This VIS image shows a short section of channel between two craters in Terra Sabaea. One crater is outside the image area at the upper left of the image. The channel appears … Continue reading →

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THEMIS: Arabia Terra – false color

Posted on June 30, 2016 by rburnham

THEMIS Image of the Day, June 30, 2016. Today’s false color image shows part of the plains in Arabia Terra. The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a … Continue reading →

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THEMIS: Xanthe Terra

Posted on June 6, 2016 by rburnham

THEMIS Image of the Day, June 6, 2016. This image shows a portion of the margin between the higher elevations of Xanthe Terra and the lower elevations of Hydraotes Chaos. The linear depression in the bottom half of the image … Continue reading →

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HiRISE: An inverted crater

Posted on June 3, 2016 by rburnham

There is a circular feature in this observation that appears to stand above the surrounding terrain. This feature is probably an inverted crater: a once-normal appearing impact crater that was filled in with sediment. The fill became indurated, or hardened, … Continue reading →

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HiRISE: One-kilometer crater on Saheki Crater floor

Posted on May 11, 2016 by rburnham

This HiRISE image shows several smaller craters that formed on the floor of Saheki Crater, an 85-kilometer diameter impact crater north of Hellas Basin. The western portion of this crater is covered by alluvial fan-like deposits that emanate from channels … Continue reading →

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HiRISE: Crater central peak

Posted on May 2, 2016 by rburnham

The appearance of an impact crater depends on several factors, including the material in which the crater was formed and the size of the impact itself. This image covers a rocky peak in the center of an unnamed crater, approximately … Continue reading →

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THEMIS: Impact-triggered landslide in Kasei Valles

Posted on April 8, 2016 by rburnham

THEMIS Image of the Day, April 8, 2016. This VIS image shows a small portion of Kasei Valles. The channel rim at the top of the image shows a complex series of processes. The crater was the source of the … Continue reading →

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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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HiRISE: Fractured crater floor

Posted on March 30, 2016 by rburnham

Fractured crater floor. Beautiful Mars series.

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