OVERVIEW OF THE BEDROCK GEOCHEMISTRY AND MINERALOGY OBSERVED BY SUPERCAM DURING PERSEVERANCE'S DELTA FRONT CAMPAIGN - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2023

OVERVIEW OF THE BEDROCK GEOCHEMISTRY AND MINERALOGY OBSERVED BY SUPERCAM DURING PERSEVERANCE'S DELTA FRONT CAMPAIGN

Elise Clavé
  • Fonction : Auteur
  • PersonId : 1091541
François Poulet
  • Fonction : Auteur
  • PersonId : 880383
Patrick J Gasda
Ryan B. Anderson
  • Fonction : Auteur
  • PersonId : 1134357
Travis Gabriel
Cédric Pilorget

Résumé

In February 2021, the Perseverance rover landed in Jezero crater, Mars. The crater floor was found to be composed of lava flows and cumulate rocks [1-5]. These magmatic rocks appear to have undergone some limited aqueous alteration; however, it is not clear whether this alteration is related to the lacustrine phase of the crater [1,3,6,7]. After completing its exploration of the crater floor, Perseverance reached the foot of the Jezero western fan in late April 2022 (sol ~422). Long-distance images acquired earlier in the mission had already confirmed the deltaic nature of the fan [8], which had long been suspected from orbital observations [9,10]. Between April and December 2022, Perseverance investigated the basal layers of the delta at two locations named Hawksbill Gap and Cape Nukshak, which are ~400 m apart [11]. Here, we present an overview of the geo-chemistry and mineralogy of the delta rocks as observed by SuperCam, and show that these rocks record a diver-sity of past aqueous alteration environments.
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Dates et versions

hal-04045001 , version 1 (24-03-2023)

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Erwin Dehouck, Olivier Forni, Cathy Quantin-Nataf, Pierre Beck, Nicolas Mangold, et al.. OVERVIEW OF THE BEDROCK GEOCHEMISTRY AND MINERALOGY OBSERVED BY SUPERCAM DURING PERSEVERANCE'S DELTA FRONT CAMPAIGN. 54th Lunar and Planetary Science Conference, Lunar and Planetary Institute, Mar 2023, The Woodlands (Texas), United States. pp.2862. ⟨hal-04045001⟩
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