The Yardangs: Mars' Mysterious Plastered Cliffs and Volcanic Secrets
In short: NASA's Curiosity rover has captured a stunning, blue-hued panorama of wind-carved Martian cliffs. These features, known as yardangs, appear almost as if they were plastered onto the landscape. Scientists are now racing to determine if they are the result of ancient wind erosion or massive volcanic eruptions.
NASA's Curiosity rover captured a detailed panorama of distant Martian cliffs on August 11, marking the 4,982nd sol of its mission. The images, taken at 8:30 a.m. local Mars time, were intentionally processed without white balancing to preserve the striking blue hues of the morning light. Situated within the northwestern areas of Mount Sharp, these characteristics exist on a peak 3 miles high which the Curiosity rover started climbing during 2014.
The rover recently achieved a milestone by climbing 0.6 miles in elevation, the most ever recorded on Mars. It is currently navigating layers enriched with sulfates and carbonates—chemical signatures of ancient drying. The yardang layer itself is roughly 10 miles across and stands out because of its odd tilt, unusual color, and appearance of being 'plastered on' to the mountain's face.
Geologists believe these cliffs may have formed after water dried up billions of years ago, leaving behind salty minerals. Once new material stopped settling, wind may have stripped away the surface to create the yardangs. However, project scientist Ashwin Vasavada notes a compelling alternative: the layer might be ash deposited by ancient volcanic eruptions. Curiosity is expected to reach the base of these yardangs sometime in 2027 to collect data using its robotic arm.
This mission is a collaborative effort between NASA's Science Mission Directorate, the Jet Propulsion Laboratory (managed by Caltech), and Malin Space Science Systems. While the rover currently explores the history of Martian lakes and streams, the upcoming study of the yardangs represents a new chapter in understanding the planet's geological evolution.
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Sources
- Summary by Intellect · source: Orion and Curiosity Models on This Week @NASA
- Also: NASA’s Curiosity Rover Catches Stunning Martian Dawn
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