Tag Archives: yardangs

THEMIS: Wind-eroded ridges

Posted on July 17, 2018 by rburnham

THEMIS Image of the Day, July 17, 2018. Winds in this region have modified the surface, carving valleys into a poorly cemented material. The winds in this region blew toward the northeast. (Note: north is to the top of the … Continue reading →

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HiRISE: Contact between Apollinaris Patera and the Medusae Fossae formation

Posted on June 29, 2018 by rburnham

Contact between Apollinaris Patera and the Medusae Fossae formation. Let’s hope they get along. (The Medusae Fossae Formation is to the right in this image and is noticeable for the yardangs — those long, high standing rock formations — we … Continue reading →

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THEMIS: Wind etching of soft sediments

Posted on June 29, 2018 by rburnham

THEMIS Image of the Day, June 29, 2018. In regions of poorly cemented surface materials it is possible to create large features due to just the action of the wind. The equatorial region between Olympus Mons and Apollinaris Mons is … Continue reading →

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THEMIS: Yardangs on Gale Crater’s Mt. Sharp

Posted on June 25, 2018 by rburnham

THEMIS Image of the Day, June 25, 2018. While far from the rover, this VIS image of Gale Crater covers the same central layered deposit, Mt. Sharp, that Curiosity is studying. The linear ridges, called yardangs, are the result of … Continue reading →

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THEMIS: Juventae Chasma’s rubble collection

Posted on May 1, 2018 by rburnham

THEMIS Image of the Day, May 1, 2018. This VIS image runs from northern Juventae Chasma to just short of the southern canyon wall. Illustrating the variety of landforms within the chasma, this image contains the rough canyon floor at … Continue reading →

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HiRISE: Dunes in western Medusae Fossae

Posted on April 13, 2018 by rburnham

Dunes in western Medusae Fossae. These dark dunes in the western Medusae Fossae Formation provide some evidence of being derived locally, probably coming from the north and because of the wind. Beautiful Mars series.

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THEMIS: Wind, dust, and gravity in Medusae Fossae

Posted on April 10, 2018 by rburnham

THEMIS Image of the Day, April 10, 2018. This VIS image is located in Medusae Fossae. Along the cliffside several dark streaks are visible. It is thought that these streaks mark the location where downslope movement of material has removed … Continue reading →

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THEMIS: Yardangs in Candor Chasma

Posted on January 12, 2018 by rburnham

THEMIS Image of the Day, January 12, 2018. This image shows part of eastern Candor Chasma. In the middle of the image is a set of linear ridges and valleys. These features are called yardangs and are created by uniform … Continue reading →

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HiRISE: Yardangs – nature’s weathervanes

Posted on November 30, 2017 by rburnham

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

Posted on November 29, 2017 by rburnham

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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