Tag Archives: yardangs

HiRISE: Meanders in ridge form in Zephyria

Posted on November 6, 2015 by rburnham

In this image, an ancient sinuous meandering river system is surrounded by features called “yardangs.” The yardangs are the ridge-like landforms that align approximately north-south. These features were created as the wind scoured and eroded the bedrock. The raised relief … Continue reading →

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HiRISE: Dust and dunes in western Medusae Fossae

Posted on September 18, 2015 by rburnham

This beautifully contrasted infrared-color image shows an area approximately 600 by 900 meters. This is a close-up of the western Medusa Fossae formation where we can see dust-covered rocky, bedrock surfaces (beige) and a bluish-tinted sand sheet that transitions into … Continue reading →

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THEMIS: Becquerel Crater – false color

Posted on September 14, 2015 by rburnham

THEMIS Image of the Day, September 14, 2015. The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. These false color images may reveal subtle variations … Continue reading →

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HiRISE: Yardangs from Apollonaris Patera

Posted on August 14, 2015 by rburnham

We see here a terrain with an incredible morphologic dichotomy: a relatively smooth region that transitions into sharp ridges. These ridges, aligned in the nearly same direction, are called yardangs. Yardangs are not unique to Mars. Many yardangs can be … Continue reading →

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HiRISE: Ridges in Gordii Dorsum

Posted on August 11, 2015 by rburnham

Ridges in Gordii Dorsum. Beautiful Mars series.

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THEMIS: Wind erosion

Posted on July 2, 2015 by rburnham

THEMIS Image of the Day, July 2, 2015. Long-term winds have etched the surface in Memnonia Sulci. Partial cemented surface materials are easily eroded by the wind, forming linear ridges called yardangs. The multiple direction of yardangs in this VIS … Continue reading →

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HiRISE: On the beauty of yardangs

Posted on May 13, 2015 by rburnham

Some geological materials (like solid rock) are incredibly tough, but others (like piles of volcanic ash) are quite soft. Some materials are soft enough that they can be eroded by the wind alone and yield landscapes that look like what … Continue reading →

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HiRISE: Layers in Memnonia Sulci region

Posted on March 4, 2015 by rburnham

Layers in Memnonia Sulci region. Beautiful Mars series.

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Orbit counter clicks 40,000 times for MRO

Posted on February 9, 2015 by rburnham

NASA’s Mars Reconnaissance Orbiter passed a mission milestone of 40,000 orbits on Feb. 7, 2015, in its ninth year of returning information about the atmosphere, surface and subsurface of Mars, from equatorial to polar latitudes…. Now in its fourth mission … Continue reading →

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HiRISE: Yardangs in Arsinoes Chaos

Posted on February 6, 2015 by rburnham

Several terrain types converge in this scene from Arsinoes Chaos, in the far eastern portions of Valles Marineris. The jumbled chaos terrain is likely related to the massive water-carved outflow channels that started in this area and flowed north across … Continue reading →

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