NASA's Perseverance rover has discovered an unusual concentration of light-colored rocks on Mars. Some of these stones are presumed to have formed deep within the planet's crust and were brought to the surface after powerful impacts.
These rocks were found in the Lac de Charmes area, as well as on the western edge of Jezero Crater. Preliminary analysis indicated the presence of gabbro—a rock that forms from the slow cooling of magma inside the planet.
The Martian surface is mainly covered with dark volcanic rocks, so the accumulation of such a quantity of light-colored stones in one area has attracted significant scientific interest.
This discovery also raises the question of how subsurface materials ended up there. One hypothesis suggests that meteorite impacts may have torn off fragments of deep crustal layers and ejected these rocks onto more superficial areas.
The formation of Jezero Crater itself, caused by a major collision in Mars's past, could also have contributed to the exposure of this material. However, the team does not yet know if this event is directly related to the rocks found in Lac de Charmes.
In recent weeks, Perseverance has also begun studying a neighboring mountainous formation where mixed light and dark fragments are present. Analyzing this complex may help determine the origin of the rocks and the processes that delivered them to the surface.
Researchers aim to answer three key questions:
Although initial results point to the presence of gabbro in many rocks, the exact origin of the material remains unknown. Scientists still need to study its composition and structure to understand how it reached the surface.
Perseverance will continue research in this area. The analysis conducted may reveal how rocks formed inside Mars were exposed and help reconstruct the events that shaped the planet's crust throughout its history.