Tag Archives: Valles Marineris

THEMIS: Mega-gullies in Sinai Planum

THEMIS Image of the Day, July 31, 2019. Today’s VIS image shows part a section of a mega gully. Located on the plains of Sinai Planum, it is just one of a number of huge channels that line the cliff … Continue reading

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HiRISE: Abstract art in Ius Chasma

Sometimes Mars’ surface is just beautiful as seen through the eyes of HiRISE. This is one example on the floor of Ius Chasma, part of Valles Marineris. The region has had a complex history of sediment deposition, deformation, erosion, and … Continue reading

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THEMIS: Melas Chasma landslide debris

THEMIS Image of the Day, April 3, 2019. This false-color image is located within Melas Chasma. The lobate forms at the bottom of the image are the remnants of landslides that crashed from the top of the cliff sides to … Continue reading

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Evidence against vast glaciation in Mars’ grandest canyons

Planetary Geomorphology Image of the Month, April 1, 2019: Lucy Kissick (Durham University, now at University of Oxford). The Valles Marineris (Image 1) form the largest system of interconnected canyons on Mars, up to 2000 km long and in parts … Continue reading

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HiRISE: Deposits along the floor of Coprates Catena

Deposits along the floor of Coprates Catena. The rest of this depression has very interesting layered deposits so we’re interested to see if there could be some here too. Coprates Catena is roughly in the center of the Valles Marineris … Continue reading

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HiRISE: In the gullies and bedrock of Ius Chasma

This image was acquired in Ius Chasma, a major section of the western portion of the giant Valles Marineris trough. We see a portion of a steep slope with gullies extending downhill (towards bottom of image). Many of the gully … Continue reading

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THEMIS: Canyons of Ius Chasma

THEMIS Image of the Day, March 7, 2019. This false-color VIS image shows part of the southern cliff face of Ius Chasma, part of the giant Valles Marineris rift system. The THEMIS VIS camera contains 5 filters. The data from … Continue reading

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HiRISE: Pitted material and mounds

Pitted material and mounds in Chryse Planitia. This rough-looking material has many meter-length pits. What exactly is this stuff? Chryse Planitia shows evidence of water erosion in the past, and is the bottom end for many outflow channels from the southern … Continue reading

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THEMIS: Landslide in Melas Chasma

THEMIS Image of the Day, October 29, 2018. Today’s VIS image shows part of the northern cliff face of Melas Chasma and the large landslide deposits at the base of the cliff face. The landslide deposits are called Ophir Labes. … Continue reading

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THEMIS: Ophir Chasma in false color

THEMIS Image of the Day, September 5, 2018. Today’s VIS image shows part of Ophir Chasma, where landslide debris mingles with probable sediments from long-vanished lakes. The THEMIS VIS camera contains 5 filters. The data from different filters can be … Continue reading

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