TL;DR
Get school and study supplies delivered free — and shop member deals
- Fast, free delivery on millions of items
- Access to Prime Big Deal Days deals on October 6–7
- Prime Video, Amazon Music and more included
Perseverance has found a large field of light-toned rocks in the Lac de Charmes region beyond Jezero crater’s western rim. Initial data suggest many are gabbro, which typically forms as magma cools deep in a planet’s crust; the team is investigating whether a breccia and an ancient impact brought them to the surface.
NASA’s Perseverance rover has found a broad field of light-toned rocks in Lac de Charmes, beyond Jezero crater’s western rim, and is investigating whether the rocks expose material formed deep in Mars’ crust. Initial data indicate that many of the rocks are gabbro, an igneous rock that typically forms as magma cools slowly underground, but their route to the surface has not been established.
The rover encountered the rocks after spending six months exploring Lac de Charmes, an area of ancient rock beyond the crater rim. The NASA Science report says the abundance of light-colored material drew the mission team’s attention because Mars is largely covered by darker basaltic rocks. Perseverance has been studying the rocks’ composition and textures to identify what they are and how they arrived at the surface.
Data collected so far suggest many of the rocks are gabbro dominated by iron- and magnesium-rich minerals. Gabbro commonly forms when magma cools and crystallizes slowly at depth. That origin makes the scattered blocks potentially useful clues to the planet’s interior, but the report describes the identification as preliminary and does not give a confirmed explanation for how the rocks were exposed.
During the week before the report, the rover examined a patch of possible bedrock between the boulders and loose surface material. Initial images suggest the outcrop contains angular light and dark rock fragments set together in a breccia. The team is testing the possibility that the loose light-toned boulders eroded out of this formation.
Clues From Mars’ Deep Crust
If the gabbro interpretation holds, these rocks could give researchers access to material that crystallized beneath Mars’ surface, rather than only recording conditions at the surface. Their composition and geological setting may help the team reconstruct how ancient Martian crust formed and changed. At present, the observations are early: the report does not establish the rocks’ precise age, the depth at which their magma formed, or the event that exposed them.
Understanding how the blocks were brought up matters because the mechanism can affect how scientists interpret the rocks. A violent impact could fracture and move deep material, while erosion may have uncovered it later. Determining whether the boulders came from the nearby breccia would connect their chemistry to a specific local geological process and help guide the rover’s next investigations.
As an affiliate, we earn on qualifying purchases.
A Search Beyond Jezero’s Rim
Perseverance is exploring the Mars 2020 mission site in and around Jezero crater. Lac de Charmes lies beyond the crater’s western rim, where the rover has spent the past six months examining ancient rocks. The NASA report, written by Alex Jones, a Ph.D. candidate at Imperial College London, was published October 5, 2026, and gives a status update on the team’s field investigation.
The report notes that breccia layers observed outside Jezero have previously been attributed to impacts on early Mars. Breccia is rock made from broken fragments cemented together, and its angular pieces can form through fracturing and transport. This makes impact processes one possible explanation for the newly examined outcrop, but the team has not identified a specific impact as its source.
The report raises two possibilities: an impact in the region may have excavated the gabbro, or the impact that formed Jezero crater may have brought the blocks to the surface. These are questions under investigation, rather than conclusions from the rover’s current data.
Mars surface sample analysis tools
As an affiliate, we earn on qualifying purchases.
As an affiliate, we earn on qualifying purchases.
How the Rocks Reached the Surface
The rocks’ origin and emplacement are still under study. The report says data so far indicate that many are gabbro, while initial images suggest the nearby outcrop may be breccia. It does not report a final identification of the outcrop or confirm that the scattered boulders eroded from it.
It is also unclear whether a regional impact, the impact that formed Jezero, or another process exposed the deep-formed rocks. The report gives no firm age for the rocks or the possible breccia, and it does not state how much additional analysis will be needed before the team can assess the competing explanations.
As an affiliate, we earn on qualifying purchases.
Perseverance Tests the Breccia Link
Perseverance is continuing its examination of the possible bedrock and the surrounding boulders. Further observations of their textures and composition may help determine whether the blocks match fragments within the breccia and whether an impact-related process could have exposed them. The NASA report gives no specific date for a conclusion; the origin of the light-toned field remains an active question for the mission team.
As an affiliate, we earn on qualifying purchases.
Key Questions
Where did Perseverance find the light-toned rocks?
They are in Lac de Charmes, beyond Jezero crater’s western rim, where Perseverance has been exploring ancient rock.
What kind of rock might they be?
Data so far indicate that many may be gabbro, an igneous rock rich in iron- and magnesium-bearing minerals that typically crystallizes as magma cools slowly underground.
Has the team confirmed how the rocks got to the surface?
No. The team is investigating whether the boulders eroded from a nearby breccia and whether an impact exposed them. Neither explanation has been confirmed.
What is a breccia?
A breccia is a rock made of angular fragments joined together. The outcrop Perseverance examined may be breccia, based on initial images.
What happens next?
Perseverance will continue studying the outcrop and nearby boulders. The report does not give a date for a final interpretation.
Source: primary
Fall Picks
fall essentials
As an affiliate, we earn on qualifying purchases.
