Tag Archives: craters

HiRISE: Crater floor containing circular mesas

Crater floor with depressions containing circular mesas. Beautiful Mars series.

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HiRISE: Crater surrounded by lava flow

Crater surrounded by lava flow material in Elysium Planitia. Beautiful Mars series.

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HiRISE: Which way is up?

This image shows an impact crater that was cut by lava in the Elysium Planitia region of Mars. The relatively flat, shallow floor, rough surface texture, and possible cooling cracks seem to indicate that the crater was partially filled with … Continue reading

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THEMIS: Sirenum Fossae

THEMIS Image of the Day, October 21, 2014. The linear depression in the center of this VIS image is a graben — a fault-bounded block of material. The graben crosses the crater and ejecta in the middle of the image, … Continue reading

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HiRISE: Layering on a crater floor in Icaria Planum

Layering on a crater floor in Icaria Planum. Beautiful Mars series.

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THEMIS: Dark slope streaks

THEMIS Image of the Day, September 30, 2014. This VIS images shows dark slope streaks on the inner rim of an unnamed crater in Amazonis Planitia. More THEMIS Images of the Day by geological topic.

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THEMIS: South polar crater

THEMIS Image of the Day, September 25, 2014. The ridge in today’s VIS image is the rim of a crater near the south polar cap. More THEMIS Images of the Day by geological topic.

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THEMIS: Terra Sirenum

THEMIS Image of the Day, September 24, 2014. Located on the floor of an unnamed crater in Terra Sirenum, the crater in the center of the VIS image has numerous gullies on the inner rim. An ejecta deposit from a … Continue reading

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HiRISE: A million or more years ago…

A million or more years ago…  Given how “smooth” and eroded the crater is, it’s extremely ancient. Beautiful Mars series.  

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HRSC: Hooke Crater in Argyre basin

Hooke Crater is located near the northern edge of the 1800 km-wide Argyre basin, one of the most impressive impact structures on Mars, excavated in a giant collision about 4 billion years ago. Sitting in a flat part of the … Continue reading

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