Approaching its 3rd anniversary of Mars landing, the rover has found a target unlike anything it has studied before – bedrock with surprisingly high levels of silica. Silica is a rock-forming compound containing silicon and oxygen, commonly found on Earth as quartz. This area lies just downhill from a geological contact zone the rover has been studying near “Marias Pass” on lower Mount Sharp.
>>Curiosity team decided to back up the rover 151 feet from the geological contact zone to investigate the high-silica target dubbed “Elk.” The decision was made after they analyzed data from 2 instruments, the laser-firing Chemistry & Camera (ChemCam) and Dynamic Albedo of Neutrons (DAN), which show elevated amounts of silicon and hydrogen, respectively...
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