Tag Archives: HiPOD

HiRISE: Holden Crater impact ejecta

Posted on March 22, 2019 by rburnham

Holden Crater impact ejecta. Because Holden is such a massive crater (about 140-km in diameter), its ejecta certainly covers a wide area. This image focuses on a small portion of it, where we can see some diverse compositions. HiRISE Picture … Continue reading →

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HiRISE: Central deposits in Pasteur Crater

Posted on March 21, 2019 by rburnham

Central deposits in Pasteur Crater. Caption throwback: The deposits in this image are eroding into knobs and ridges. The erosion is probably dominated by wind, as most of the ridges are parallel. This is common in wind-eroded features, with the … Continue reading →

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HiRISE: Fan, meet layered deposit

Posted on March 20, 2019 by rburnham

Fan, meet layered deposit. This is a gorgeous fan reaching out into deposits in east Candor Chasma. Did landslides deform the layered material? HiRISE Picture of the Day archive [More at links]

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HiRISE: We found geology in a chaotic place

Posted on March 19, 2019 by rburnham

We found geology in a chaotic place. The terrain here lives up to its description as “chaotic:” we see small hills, mesas, buttes and valleys. This area is called Oxia Palus, and its debris likely came from Ravi Vallis, which … Continue reading →

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HiRISE: Surface texture

Posted on March 18, 2019 by rburnham

Surface texture. Interesting how the dune ripples within these shallow craters all seem to have a similar orientation. This image is within a crater in the Arabia Terra region. HiRISE Picture of the Day archive [More at links]

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HiRISE: When the lighting is just right

Posted on March 15, 2019 by rburnham

When the lighting is just right. Almost all of our images are taken in the Martian afternoon, around 3 p.m., and sometimes the lighting conditions make a particularly striking image. These are layered sediments in east Melas Chasma. HiRISE Picture … Continue reading →

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HiRISE: Overlapping rims of craters

Posted on March 14, 2019 by rburnham

Overlapping rims of craters. This image is, literally, of the overlapping part on the eastern side, so it might not be obvious there are two craters here. Nonetheless, our objective is to observe the elevation change in the craters along with … Continue reading →

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HiRISE: Uncommon clay

Posted on March 13, 2019 by rburnham

Uncommon clay. There are some uncommon clays in this sedimentary plain, as first detected in low resolution by the OMEGA instrument on the Mars Express Orbiter. Note the tight cluster of impacts. This image is in the Terra Cimmeria region … Continue reading →

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HiRISE: Streaking on Mars

Posted on March 12, 2019 by rburnham

Streaking on Mars. Wind streaking, that is. Here’s the suggester’s rationale for acquiring this image: “There’s a field of two-tailed bright wind streaks here that are really neat. They seem unique to the area. It would be nice to get … Continue reading →

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HiRISE: A margin of lava

Posted on March 11, 2019 by rburnham

A margin of lava. This lava margin in Cerberus Palus is part of the Athabasca Valles flow. There are also lava coils in this region, something we did not know existed on Mars until HiRISE took an image. The lava … Continue reading →

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