Tag Archives: yardangs

THEMIS: Juventae Chasma’s rubble collection

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

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

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

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

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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HiRISE: Dark sediments in the Medusae Fossae Formation

Dark sediments in the Medusae Fossae Formation. Beautiful Mars series.

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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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HiRISE: Yardangs south of Olympus Mons

Yardangs south of Olympus Mons. Beautiful Mars series.

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THEMIS: Yardangs in Memnonia Sulci

THEMIS Image of the Day, October 24, 2016. The elongated hills in this VIS image are a feature termed yardangs. Yardangs are formed by wind activity in regions where the surface material is soft and not well cemented. The elongation … Continue reading

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