Tag Archives: oblique impacts

Recently formed crater clusters on Mars

Posted on March 8, 2019 by rburnham

[Editor’s note: From a paper by Ingrid Daubar and three co-authors recently published in the Journal of Geophysical Research.] Recently Formed Crater Clusters on Mars • We report on properties of new dated crater clusters on Mars; most clusters in … Continue reading →

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THEMIS: Out of round

Posted on January 21, 2019 by rburnham

THEMIS Image of the Day, January 21, 2018. This VIS image shows a group of craters in Terra Sirenum. The apparent youngest one is the center crater with the scalloped rim. Subsurface tectonic features like faults can interfere with crater … Continue reading →

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THEMIS: Central peaks of Hale Crater

Posted on January 11, 2019 by rburnham

THEMIS Image of the Day, January 11, 2019. Today’s VIS image shows part of the floor of Hale Crater and the elongate axis of the central peak mountains. Hale Crater is an example of an oblique impact crater. The mountain … Continue reading →

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THEMIS: Something odd in Noachis Terra

Posted on January 9, 2019 by rburnham

THEMIS Image of the Day, January 9, 2019. This VIS image shows a portion of Noachis Terra to the northeast of Argyre Planitia. In the middle of the image is an unnamed crater that is not even close to being … Continue reading →

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THEMIS: Not quite round

Posted on July 23, 2018 by rburnham

THEMIS Image of the Day, July 23, 2018. This VIS image shows an unnamed crater in Noachis Terra. The crater is relatively young, with several different structures on the floor and rim still visible. The inner rim of the crater … Continue reading →

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HiRISE: A triple crater

Posted on June 2, 2017 by rburnham

This image (making a stereo pair with ESP_041350_1455) shows an elongated depression from three merged craters. The raised rims and ejecta indicate that these are impact craters rather than collapse or volcanic landforms. The pattern made by the ejecta and … Continue reading →

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HiRISE: Dragonfly-shaped crater

Posted on February 10, 2017 by rburnham

The broader scene for this image is the fluidized ejecta from Bakhuysen Crater to the southwest, but there’s something very interesting going on here on a much smaller scale. A small impact crater, about 25 meters in diameter, with a … Continue reading →

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THEMIS: Hale Crater’s rugged central peaks

Posted on December 16, 2016 by rburnham

THEMIS Image of the Day, December 16, 2016. This VIS image shows part of the floor of Hale Crater. The mountains in the image are part of the elongated central peak of the crater. It is believed that Hale Crater … Continue reading →

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THEMIS: Arabia Terra – false color

Posted on June 30, 2016 by rburnham

THEMIS Image of the Day, June 30, 2016. Today’s false color image shows part of the plains in Arabia Terra. The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a … Continue reading →

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HiRISE: On the shapes of impact craters

Posted on May 18, 2016 by rburnham

The shape of a crater can depend on factors including the angle of impact and the pre-impact slope and topography. This image shows a roughly 3-kilometer impact crater, formed on the sloping walls of Tithonium Chasma, part of the large … Continue reading →

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