Tag Archives: impact processes

HiRISE: Southeast Hale Crater ejecta

Posted on August 21, 2019 by rburnham

Southeast Hale Crater ejecta. This image can help us determine whether there are one or multiple ejecta lobes in this region. Hale Crater is often imaged by HiRISE for the presence of recurring slope lineae, or flows that may or … Continue reading →

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HiRISE: Classic crater

Posted on August 9, 2019 by rburnham

Well preserved and loving it. Is there something particularly special about this nice, 2-kilometer diameter crater? Maybe not, but its simplicity, classic shape and fairly well-preserved rim speak for itself in a desolate landscape. HiRISE Picture of the Day archive. … Continue reading →

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Did the Lomonosov Crater impact create a mega-tsunami?

Posted on July 18, 2019 by rburnham

[Editor’s note: From a paper by François Costard and eight co-authors recently published in the Journal of Geophysical Research.] The Lomonosov Crater Impact Event: A Possible Mega‐Tsunami Source on Mars • Unusual morphometric characteristics of Lomonosov crater in comparison to … Continue reading →

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HiRISE: Overlapping rims of craters

Posted on March 14, 2019 by rburnham

Overlapping rims of craters. This image is, literally, of the overlapping part on the eastern side, so it might not be obvious there are two craters here. Nonetheless, our objective is to observe the elevation change in the craters along with … Continue reading →

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HiRISE: Colorful impact ejecta in Ladon Valles

Posted on March 6, 2019 by rburnham

This image covers the western portion of a well-preserved (recent) impact crater in Ladon Basin. Ladon is filled by diverse materials including chemically-altered sediments and unaltered lava, so the impact event ejected and deposited a wide range of elements. This … 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: Impact crater’s steep slopes

Posted on July 5, 2018 by rburnham

Steep slopes of impact crater. Beautiful Mars series. [More at links]

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HiRISE: Megabreccia in NE Syrtis Major

Posted on July 2, 2018 by rburnham

Megabreccia in northeast Syrtis Major region. Northeast Syrtis Major is a landscape where a diverse sampling of aqueous and igneous geological processes are recorded in the rock at the surface. “‘Breccia” literally means “rubble” and implies a rock deposited very close … Continue reading →

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THEMIS: Impact blast scars on crater rim

Posted on June 12, 2018 by rburnham

THEMIS Image of the Day, June 12, 2018. Today’s VIS image shows part of a crater located north of Hecates Tholus. The radial grooves in the ejecta blanket are still visible around the crater rim. There is also likely blast … Continue reading →

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HiRISE: A world of crater clusters

Posted on September 21, 2017 by rburnham

A world of crater clusters  — These are in Hesperia Planum. Beautiful Mars series.

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