Tag Archives: High Resolution Imaging Science Experiment

HiRISE: Layered bedrock to the northwest of Hellas Planitia

Posted on March 26, 2019 by rburnham

Layered bedrock to the northwest of Hellas Planitia. There are some very nice geologic contacts in this region. HiRISE Picture of the Day archive [More at links]

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HiRISE: Deposits along the floor of Coprates Catena

Posted on March 25, 2019 by rburnham

Deposits along the floor of Coprates Catena. The rest of this depression has very interesting layered deposits so we’re interested to see if there could be some here too. Coprates Catena is roughly in the center of the Valles Marineris … Continue reading →

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HiRISE: Bedrock in the central peaks of Hale Crater

Posted on March 22, 2019 by rburnham

This long image is entirely over the extensive central peak complex of Hale Crater. Of particular interest are bedrock outcrops and associated fine-grained sediments with different colors. This 153-kilometer diameter crater was named after American astronomer George Ellery Hale. [More … Continue reading →

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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: Complex gullies in a crater

Posted on March 21, 2019 by rburnham

Most gullies in the southern mid-latitudes are on south-facing slopes, which are the coldest and have the most frost in the winter. However, some occur on other slopes. This image shows large gullies on both the pole- and equator-facing slopes. … 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: In the gullies and bedrock of Ius Chasma

Posted on March 20, 2019 by rburnham

This image was acquired in Ius Chasma, a major section of the western portion of the giant Valles Marineris trough. We see a portion of a steep slope with gullies extending downhill (towards bottom of image). Many of the gully … Continue reading →

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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: Everything is (well) illuminated

Posted on March 19, 2019 by rburnham

The south polar layered deposits are icy layers that have been deposited over millions of years, preserving a climate history of Mars. In this image the layers are well illuminated to accentuate the topography. A prior image of this location … Continue reading →

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