Tag Archives: bedrock

HiRISE: Exposing the rock in impact craters

Posted on February 7, 2019 by rburnham

In this complex crater (about 44-kilometers in diameter), we see bedrock in several locations from different depths in the crust. The central uplift exposes large fragments of green-toned bedrock that possibly originated from several kilometers beneath the surface. To the … Continue reading →

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HiRISE: Bedrock delights

Posted on February 4, 2019 by rburnham

Bedrock delights. These gorgeous bedrock formations are located in the Syrtis Major region, which is a low-relief shield volcano. HiRISE Picture of the Day archive [More at links]

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HiRISE: Cross-section of a complex crater

Posted on January 25, 2019 by rburnham

This image shows a cross-section of a complex crater in Terra Cimmeria. Starting in the center, we see a series of peaks with exposed bedrock. These peaks formed during the impact event when material that was originally several kilometers below … Continue reading →

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HiRISE: Bedrock exposures in Terra Sabaea

Posted on January 4, 2019 by rburnham

Bedrock exposures in Terra Sabaea. Terra Sabaea extends from the Hellas impact basin to Utopia Planitia. It covers 4,700 kilometers at its broadest extent. Beautiful Mars series. [More at links]

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HiRISE: Bedrock exposures in the highlands

Posted on October 23, 2018 by rburnham

Bedrock exposures in the highlands. The bedrock here is ancient. Beautiful Mars series. [More at links]

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HiRISE: Tell-tale bedrock in Tyrrhena Terra

Posted on October 9, 2018 by rburnham

Large craters, like this 50-kilometer diameter one, can uplift material from below and form a mountain-like central peak. Craters of this size on Mars become unstable as they form and collapse due to gravity. Craters with central peaks and terraced … Continue reading →

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HiRISE: Exposed bedrock in Millochau Crater

Posted on August 14, 2018 by rburnham

Exposed bedrock in Millochau Crater. There are some very nice sediments here. The crater measures 115 kilometers in diameter and was named after French astronomer Gaston Millochau. Beautiful Mars series. [More at links]

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HiRISE: Smaller crater on the floor of Gale Crater

Posted on July 23, 2018 by rburnham

A smaller crater on the floor of Gale Crater. This crater likely exposes Gale Crater bedrock beneath the floor units and may allow mapping of floor units in the south of Gale. Beautiful Mars series. [More at links]

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HiRISE: Bedrock exposed in Hale Crater’s rim

Posted on June 1, 2018 by rburnham

Hale Crater is a large impact crater (more than 100 kilometers) with a suite of interesting features such as active gullies, active recurring slope lineae, and extensive icy ejecta flows. There are also exposed diverse (colorful) bedrock units. NB: North … 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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