Tag Archives: University of Arizona

HiRISE: North polar layered deposits

Posted on May 22, 2018 by rburnham

North polar layered deposits. Beautiful Mars series. [More at links]

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HiRISE: Twin craters in Meridiani Planum

Posted on May 18, 2018 by rburnham

This image shows two small impact craters located in Meridiani Planum. This is an example of the geologic principle of superposition: figuring out what happened first by looking at how features interact with each other. We can see that one … Continue reading →

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HiRISE: All that the lava leaves behind

Posted on May 18, 2018 by rburnham

All that the lava leaves behind. There are streamlined and eroded forms in this lava channel, a region with very little HiRISE coverage. Beautiful Mars series. [More at links]

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HiRISE: Dunes in Nectaris Montes

Posted on May 17, 2018 by rburnham

Sand dunes in Valles Marineris can be impressive in size, with steep slopes that seem to climb and descend. An enhanced-color cutout shows some of these on the slopes of Nectaris Montes within Coprates Chasma. The brighter bedforms are inactive … Continue reading →

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HiRISE: Following Opportunity

Posted on May 17, 2018 by rburnham

Following Opportunity. This image adds more coverage the general area that the rover Opportunity passed through (not the entire image). The image would also be useful for secondary crater studies and monitoring the disappearance of Opportunity’s tracks over time. Beautiful Mars … Continue reading →

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HiRISE: Pair of new impact craters

Posted on May 17, 2018 by rburnham

MRO has discovered over 700 new impact sites on Mars. Often, a bolide breaks apart in the atmosphere and makes a tight cluster of new craters. Here we see just two new craters, both with the same distinctive pattern of … Continue reading →

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HiRISE: Barchan Pac-Man

Posted on May 16, 2018 by rburnham

Barchan sand dunes are common on Mars and often form vast dune fields within very large (tens to hundreds of kilometers) impact basins. The regions upwind of barchans are usually devoid of sandy bedforms, so if you were walking in … Continue reading →

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HiRISE: Weathered ejecta and pitted material associated with Kontum Crater

Posted on May 8, 2018 by rburnham

Weathered ejecta and pitted material associated with Kontum Crater. Weathered, eroded, and scoured ejecta of Kontum Crater could expose ponded, pitted, and underlying material, as well as interesting contrasts. This image is right outside Kontum Crater on the eastern side. … Continue reading →

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HiRISE: Eastern rim of Bonestell Crater

Posted on May 7, 2018 by rburnham

Eastern rim of Bonestell Crater. There are some excellent bedrock exposures in these images. Beautiful Mars series. [More at links]

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HiRISE: Pettit Crater wind streak and intracrater dunes

Posted on May 7, 2018 by rburnham

Pettit Crater wind streak and intracrater dunes. Part of the rationale for this observation is to look for dune bedforms that may be related to thermal inertia and particle mobility. This crater was named after Edison Pettit, an American astronomer (1890–1962). … Continue reading →

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