Tag Archives: wind erosion

THEMIS: Mesa and dunes in Candor Chasma

THEMIS Image of the Day, January 9, 2018.  This image shows part of western Candor and the erosion of a large mesa. Layered materials are visible throughout the image. The dark material with the linear appearance in the middle of … Continue reading

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THEMIS: Chaotic deposits in Candor Chasma

THEMIS Image of the Day, January 8, 2018. Candor Chasma is one of the largest canyons that make up Valles Marineris. It is approximately 810 km long (503 miles) and has is divided into two regions – eastern and western … Continue reading

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Opportunity report, Sol 4925, by A.J.S. Rayl, The Planetary Society

December 1, 2017: Opportunity Returns Fundamental Finding in Perseverance, Cruises Through Winter Solstice: Opportunity continued the historic winter science campaign inside Perseverance Valley and delivered the goods that confirmed an important discovery in November, and then cruised through winter solstice, … Continue reading

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HiRISE: Yardangs – nature’s weathervanes

The prominent tear-shaped features in this image are erosional features called yardangs. Yardangs are composed of sand grains that have clumped together and have become more resistant to erosion than their surrounding materials. As the winds of Mars blow and … Continue reading

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THEMIS: Rough-textured ridge in Melas Chasma

THEMIS Image of the Day, November 29, 2017. This VIS image shows part of a large ridge of material near the south central part the canyon. The roughest looking material is the top of the ridge. Wind may also have … Continue reading

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Opportunity: 10 feet back upslope

Sol 4890, October 26, 2017. Seeking to examine some rocks upslope from Opportunity’s last position, scientists drove the rover about 10 feet back. This places the front of the rover where the instrument arm can work on a target area … Continue reading

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HiRISE: A highly disrupted crater

This 2.5-kilometer diameter crater has been significantly altered from the usual bowl-shaped appearance we associate with craters. Material has covered significant portions of the ejecta and filled in the crater. This fill material has since been subject to erosion—like boulders … Continue reading

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THEMIS: Wind erosion on Hebes Mensa

THEMIS Image of the Day, August 17, 2017. The large mesa in the center of Hebes Chasma dominates this image. The top of the mesa is at the center of the image, with the cliff faces to the top and … Continue reading

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HiRISE: Bedrock outcrops in Kaiser Crater

This enhanced-color image shows a patch of well-exposed bedrock on the floor of Kaiser Crater. The wind has stripped off the overlying soil, and created grooves and scallops in the bedrock. The narrow linear ridges are fractures that have been … Continue reading

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THEMIS: Yardangs in Memnonia Sulci

THEMIS Image of the Day, January 9, 2017. Today’s VIS image shows some of the extensive wind etched terrain in Memnonia Sulci, located south west of Olympus Mons. The linear ridges are called yardangs and form by wind removal of … Continue reading

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