Tag Archives: Mars Reconnaissance Orbiter

HiRISE: A ridge on the plains

Posted on March 28, 2019 by rburnham

A ridge on the plains. This ridge on rocky plains is located not to far from Daedalia Planum, a featureless plain with multiple lava flows and small craters. HiRISE Picture of the Day archive [More at links]

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MARCI weather report, March 18-24, 2019

Posted on March 28, 2019 by rburnham

Northern hemisphere spring arrived along with southern hemisphere autumn this past week on Mars. Southern Aonia experienced dusty conditions as repeated dust-lifting activity continued in the 60° south latitude band. Moving our attention towards the low-latitudes, a stronger presence of … Continue reading →

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HiRISE: Buried by time

Posted on March 27, 2019 by rburnham

Buried by time. Over time, this crater was buried by folded deposits, although we can still tell it is an impact crater. However, we can still see ridges and gullies. Are these ridges made of material that proved more resistant … Continue reading →

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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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MARCI weather report, March 11-17, 2019

Posted on March 20, 2019 by rburnham

Last week on Mars, dust-lifting events continued over southern Aonia and Sirenum. The eastward movement of these storms lofted dust into the Argyre impact basin on multiple sols. The Hellas impact basin, on the other hand, was largely unobscured from … Continue reading →

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