SULFATE-BEARING STRATA SEQUENCE EXTENDS EARLY MARS ENVIRONMENTS CONDUCIVE TO PREBIOTIC EVOLUTION - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2024

SULFATE-BEARING STRATA SEQUENCE EXTENDS EARLY MARS ENVIRONMENTS CONDUCIVE TO PREBIOTIC EVOLUTION

Juergen Schieber
  • Fonction : Auteur
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Benton Clark
Linda C Kah
Lauren Edgar
Patrick J Gasda
Nina L Lanza

Résumé

Mars sedimentary record dates as far back as 4.3 Ga, perhaps earlier [1], and the early presence of habitable environments is now welldocumented [2]. Yet, much more uncertain is whether early surface conditions were conducive to an independent emergence of life [3,4]. Prebiotic chemistry which may lead to incipient life forms is thought to be restricted not only to certain limited conditions, but may even require a specific succession of distinct environmental changes for it to succeed [5]. As such, it differs substantially from more broadly defined requirements for habitability. After exploring strata dominated by clay-bearing mudstones in Gale crater, the Curiosity rover reached the sulfate-bearing unit, which is hundreds of meters thick and represents evidence for a major environmental transition characteristic of stratified terrains found in other regions across Mars [6]. At this transition data collected by the rover uncovered a new type of sulfateenriched stratigraphic sequence.
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Dates et versions

hal-04650550 , version 1 (16-07-2024)

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  • HAL Id : hal-04650550 , version 1

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William Rapin, Gilles Dromart, Juergen Schieber, Benton Clark, Linda C Kah, et al.. SULFATE-BEARING STRATA SEQUENCE EXTENDS EARLY MARS ENVIRONMENTS CONDUCIVE TO PREBIOTIC EVOLUTION. Tenth International Conference on Mars 2024, Lunar and Planetary Institute, Jul 2024, Pasadena (California), United States. pp.3463. ⟨hal-04650550⟩
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