GeoPicture of the Week: Fresh Crater on Mars

This jaw-dropping image was taken by High Resolution Imaging Science Experiment (HiRISE) camera aboard NASA’s Mars Reconnaissance Orbiter in the Sirenum Fossae region of Mars.

This impact crater appears relatively recent as it has a sharp rim and well-preserved ejecta. The steep inner slopes are carved by gullies and include possible recurring slope lineae on the equator-facing slopes. Fresh craters often have steep, active slopes, so the HiRISE team is monitoring this crater for changes over time. The bedrock lithology is also diverse. The crater is a little more than 1-kilometer wide.

Image Credit: NASA/JPL/University of Arizona

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About Mihai Andrei

Andrei's background is in geophysics, and he's been fascinated by it ever since he was a child. Feeling that there is a gap between scientists and the general audience, he started ZME Science -- and the results are what you see today.

One thought on “GeoPicture of the Week: Fresh Crater on Mars

  1. Progressive Republican

    About the size of the Barringer Crater in Arizona.

    With Mars having less atmosphere and gravity, I wonder what the difference in the sizes and makeup of the impactors might be. The impactor for Arizona’s was a nickel-iron meteorite and has been estimated at d = 50 m which struck with an estimated force of 10 megatons.

    Interestingly, it was measurements of the lead isotopes in remaining meteor fragments that nailed the Earth’s age down to 4.55 billion (± 70 million) years.

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