Within the red rock at Serpentine Rapids, Perseverance found unusual patches of dark and drab green, which drew NASA's attention. "Green spots like those observed in the Wallace Butte abrasion are ...

The movement of the glacier pulls these frozen rocks away. Abrasion – rocks trapped in the glacier rub against the valley floor wearing it away like sandpaper. Eroded material, such as rock ...

In one of its latest activities, Perseverance captured a detailed nighttime mosaic image of an abrasion patch on a rock formation named “Malgosa Crest” within the “Serpentine Rapids” area.

These rocks join other debris picked up by the ice at the sole of the glacier. As the glacier moves, abrasion kicks in as these stones scrape along the rock floor and you can see how these stones ...