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View of landslides in the Valles Marineris, Mars

View of landslides in the Valles Marineris, Mars

R350/0066

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Credit

US GEOLOGICAL SURVEY / SCIENCE PHOTO LIBRARY US GEOLOGICAL SURVEY / SCIENCE PHOTO LIBRARY

Caption

Oblique view of landslides in Ophir Chasm, Mars, computer-processed from Viking spacecraft imagery & topographic maps of the planet. Ophir Chasm lies in the central region of the giant Martian canyon system the Valles Marineris. The canyons were formed by a combination of geological faulting, landslides, & erosion by wind & water. The three arc-shaped cliffs at right are slump scarps and the landslide debris is piled at the base of the cliffs. The scarps are each about 25 km wide and 4 km high and the landslide debris has flowed a distance of about 65 km from the cliff base. The vertical scale of the image has been stretched by a factor of 2, exaggerating the cliff heights. Alfred McEwen & topographic mapping by Sherman Wu, both at USGS, Flagstaff,.

Release details

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