HiRISE | Yardangs Forming near Gordii Dorsum (ESP_035558

NASA/JPL-Caltech/UArizona

Yardangs Forming near Gordii Dorsum
ESP_035558_1830 Science Theme: Geologic Contacts/Stratigraphy

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The purpose of this observation is to determine how these formations, called “yardangs” are forming within a layer of bedrock.

Yardangs are streamlined hills that are carved by wind erosion from bedrock. The rock must be sufficiently erodible for wind to either deflate (pick up) poorly-consolidated pieces or scrape the surface by blowing sand. HiRISE resolution allows us to view yardangs and the component layers more closely, and to get a better understanding of the material.

“Yardang” is a word of Turkish origin, meaning “steep bank.“ When viewed from above, yardangs can look like the hull of a boat.

Written by: HiRISE Science Team (narration: Tre Gibbs) (30 April 2014)

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POSTSCRIPT
NASA’s Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, Calif., manages the Mars Reconnaissance Orbiter for NASA’s Science Mission Directorate, Washington. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona.