Unusual White Rocks on Mars. Where did they come from?

 

FROM SPACE.COM: 

NASA's Perseverance rover, a robotic geologist that has been exploring the Jezero Crater since early 2021, puzzled scientists when it delivered images of over 4,000 light-toned, pebble-sized rocks scattered all over the crater floor.

"These are very unusual rocks and we're trying to figure out what's been going on," Candice Bedford, a planetary scientist at Purdue University in Indiana and a member of the Mars 2020 science team, said at the Lunar and Planetary Science Conference (LSPC) last month.

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The imaged white rocks are what scientists refer to as "floats," meaning they have been removed and transported from their original habitats"

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