Tag Archives: craters

HiRISE: Channels and ripples along crater walls

Channels and ripples along crater walls. From the science rationale: “We would like a HiRISE image of the selected area to look for evidence of both fluvial and aeolian processes on the crater wall. Specifically, we are looking for channels … Continue reading

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THEMIS: Mesas, plains, craters in Terra Sabaea

THEMIS Image of the Day, September 11, 2018. This VIS image shows part of Terra Sabaea, including plains, craters, and mesas. The dark blue tones often indicate locations of basaltic sands. The THEMIS VIS camera contains 5 filters. The data … Continue reading

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THEMIS: False-color craters and plains in Terra Cimmeria

THEMIS Image of the Day, August 31, 2018. Today’s false color image shows several craters and plains of Terra Cimmeria. The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create … Continue reading

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THEMIS: Daedalia Planum crater

THEMIS Image of the Day, July 30, 2018. This VIS image shows part of an unnamed crater on the northwest margin of Daedaia Planum. Lava flows are visible around the crater rim. The interior of the crater has been filled … Continue reading

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HiRISE: Cored island

Cored island. This channel may have been used by both lava and water. One of the processes produced a crater-cored island and later, the downstream side was eroded away, leaving knobs and an inverted streamlined form. Beautiful Mars series. [More … Continue reading

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HiRISE: Lava-coated craters

Lava-coated craters. The larger crater looks normal–dimpled depression with a protruding rim barely covered by lava which later deflated. The smaller depression looks deeper and steeper-sided, and the rim does not protrude, so it is probably below the level of … Continue reading

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THEMIS: Impact blast scars on crater rim

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: Clays in a grouping of small craters

Clays in a grouping of small craters. Beautiful Mars series. [More at links]

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THEMIS: Old craters in an even older land

THEMIS Image of the Day, April 16, 2018. This VIS image shows several craters. The interior of the central one has retained much of the original topography, including the central peak. The floor has not been smoothed by deposits of … Continue reading

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HiRISE: Crater watchin’ in northeast Syrtis Major

Crater watchin’ in northeast Syrtis Major region. The dunes within the crater are fascinating for their cell shapes, caused by the wind. Beautiful Mars series.

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