Tag Archives: rampart ejecta

THEMIS: Blast zone at Lonar Crater

THEMIS Image of the Day, May 7, 2018. This VIS image shows the part of the crater rim and ejecta surrounding Lonar Crater in the northern plains of Vastitas Borealis. There is a fine scale, radial grooved outer layer of … Continue reading

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Long-term preservation of subsurface ice on Mars

Layered-ejecta craters on Mars that are associated with impacts into rock mixed with volatiles have been formed throughout the planet’s history indicating the long-term preservation of subsurface ice. Water ice on Mars is not currently stable in the near-equatorial regions … Continue reading

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THEMIS: Rampart ejecta around Yuty Crater

THEMIS Image of the Day, January 22, 2018. This VIS image shows a portion of the ejecta deposit of Yuty Crater. The raised edge of the ejecta is termed a rampart, and indicates that a volatile like water may have … Continue reading

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HiRISE: Flow on the rim of Tooting Crater

This oblique view shows a small part of the near-rim ejecta from Tooting Crater. The flow extending from upper left to lower right looks much like a typical lava flow, but doesn’t emanate from a volcanic vent. Instead, this must … Continue reading

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THEMIS: Young crater ejecta crosses ridge

THEMIS Image of the Day, Febraur 3, 2017. This VIS image shows the same young crater from earlier this week. In this image, covering the area to the south of the young crater, we can see how the thin radial … Continue reading

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THEMIS: Young crater and wide-flung ejecta

THEMIS Image of the Day, January 31, 2017. Today’s VIS image shows two craters in Terra Cimmeria just north of Kepler Crater. The small crater in the middle of the image is a relatively new crater. The interior rim has … Continue reading

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THEMIS: Yuty Crater’s splashy debris pattern

THEMIS Image of the Say, October 10, 2016. This VIS image shows part of the ejected debris around Yuty Crater. The ejecta, with the raised outer margin, is called a rampart. It comes from water- or ice-rich ground where the … Continue reading

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THEMIS: Yuty Crater

THEMIS Image of the Day, June 14, 2016. This VIS image shows a small portion of Yuty Crater’s ejecta blanket. The crater is off the image to the right. The lobes of ejecta end in a raised ridge of material; … Continue reading

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THEMIS: Yuty Crater ejecta – false color

THEMIS Image of the Day, April 26, 2016. Today’s false color image shows part of the ejecta from Yuty Crater. The THEMIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a … Continue reading

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THEMIS: Rampart crater

THEMIS Image of the Day, February 17, 2016. This VIS image shows an unnamed crater in Acidalia Planitia. The margins of the ejecta are lobate and higher than the ejecta closer to the crater. This type of ejecta blanket is … Continue reading

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