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Daedalia Planum - Mars Reconnaissance Orbiter
This image shows the contact between crater ejecta and a lava flow in Daedalia Planum. The crater ejecta is composed of weak, fragmented rock, which has been eroded by wind to form a series of parallel ridges called yardangs. The lava flows, which are composed of mechanically resistant rocks, are more or less unchanged from when they were emplaced.
The streakiness of colors in this image are due to the variable deposition and erosion of light-colored dust. High-standing obstacles block the wind, allowing dust to accumulate on surfaces. In areas exposed to wind, dust is more easily removed, revealing darker sand and bedrock.
This image was created using the CRISM imaging spectrometer. Each pixel of a CRISM image contains a 500 point spectrum, from which a color can be reconstructed. This reconstructed color was overlaid on a higher-resolution image taken with the Mars Reconnaissance Orbiter Context Camera (CTX), which simultaneously took a photo while CRISM was collecting data.
This image was taken on March 2, 2007. It uses CRISM observation HRL0000489C and CTX observation P05_002804_1667_XI_13S143W.
Image Credit: NASA / JPL / JHUAPL / MSSS / Aster Cowart
Daedalia Planum - Mars Reconnaissance Orbiter
This image shows the contact between crater ejecta and a lava flow in Daedalia Planum. The crater ejecta is composed of weak, fragmented rock, which has been eroded by wind to form a series of parallel ridges called yardangs. The lava flows, which are composed of mechanically resistant rocks, are more or less unchanged from when they were emplaced.
The streakiness of colors in this image are due to the variable deposition and erosion of light-colored dust. High-standing obstacles block the wind, allowing dust to accumulate on surfaces. In areas exposed to wind, dust is more easily removed, revealing darker sand and bedrock.
This image was created using the CRISM imaging spectrometer. Each pixel of a CRISM image contains a 500 point spectrum, from which a color can be reconstructed. This reconstructed color was overlaid on a higher-resolution image taken with the Mars Reconnaissance Orbiter Context Camera (CTX), which simultaneously took a photo while CRISM was collecting data.
This image was taken on March 2, 2007. It uses CRISM observation HRL0000489C and CTX observation P05_002804_1667_XI_13S143W.
Image Credit: NASA / JPL / JHUAPL / MSSS / Aster Cowart