Tag Archives: ejecta

THEMIS: Big impacts and little in Terra Cimmeria

THEMIS Image of the Day, March 13, 2019. This VIS image contains three craters. There is a quarter of the largest crater in the top half of the image, half of a smaller crater at the very top, and the … Continue reading

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HiRISE: Colorful impact ejecta in Ladon Valles

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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HiRISE: Ejecta margin near Ares Vallis

Ejecta margin near Ares Vallis. The objective of this observation is to examine the margin of a crater’s ejecta. The ejecta on this side looks different than on the opposite side. Ares Vallis is an outflow channel, likely carved by … Continue reading

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HiRISE: Weathered ejecta and pitted material associated with Kontum Crater

Weathered ejecta and pitted material associated with Kontum Crater. Weathered, eroded, and scoured ejecta of Kontum Crater could expose ponded, pitted, and underlying material, as well as interesting contrasts. This image is right outside Kontum Crater on the eastern side. … Continue reading

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HiRISE: Mars and the amazing Technicolor ejecta blanket

A close-up image shows the exposed bedrock of an ejecta blanket of an unnamed crater in the Mare Serpentis region of Mars. Ejecta, when exposed, are truly an eye-opening feature, as they reveal the sometimes exotic subsurface, and materials created … Continue reading

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HiRISE: Mojave Crater far-flung impact ejecta

Distal reaches of Mojave Crater impact ejecta. Beautiful Mars series.

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Impact-heated rock led to relatively recent water-carved valleys on Mars

New research shows that water from melted snow and ice likely carved valley networks around Lyot crater on Mars. Present-day Mars is a frozen desert, colder and more arid than Antarctica, and scientists are fairly sure it’s been that way … Continue reading

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HiRISE: Sandlot

Sandlot. Beautiful Mars series.

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HiRISE: Colorful impact ejecta from Hargraves Crater

The collision that created Hargraves Crater impacted into diverse bedrock lithologies of ancient Mars. As a result, the impact ejecta is a rich mix of rock types with different colors and textures. The crater is named after Robert Hargraves who … Continue reading

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HiRISE: Isidis Basin ejecta

This scene is a jumbled mess! There are blocks and smears of many different rocks types that appear to have been dumped into a pile. That’s probably about what happened, as ejecta from the Isidis impact basin to the east. … Continue reading

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