Article Dans Une Revue Journal of Geophysical Research. Planets Année : 2024

Diagenetic History and Biosignature Preservation Potential of Fine‐Grained Rocks at Hogwallow Flats, Jezero Crater, Mars

1 EAPS - Department of Earth, Atmospheric, and Planetary Sciences [West Lafayette]
2 Purdue University [West Lafayette]
3 APL - Johns Hopkins University Applied Physics Laboratory [Laurel, MD]
4 IAS - Institut d'astrophysique spatiale
5 LGL-TPE - Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement
6 Caltech Division of Geological and Planetary Sciences
7 IPAG - Institut de Planétologie et d'Astrophysique de Grenoble
8 JPL - Jet Propulsion Laboratory
9 UCLA - University of California [Los Angeles]
10 WWU - Western Washington University
11 Department of Geology and Geography [Morgantown]
12 Stanford University
13 LPG - Laboratoire de Planétologie et Géosciences [UMR_C 6112]
14 EAPS - Department of Earth, Atmospheric and Planetary Sciences [MIT, Cambridge]
15 JSC - NASA Johnson Space Center
16 LANL - Los Alamos National Laboratory
17 In­sti­tut für Op­ti­sche Sen­sor­sys­te­me
18 TAMU - Texas A&M University [College Station]
19 Imperial College London
20 RISE Research Institutes of Sweden
21 University of Alberta
22 UPV / EHU - Universidad del País Vasco [Espainia] / Euskal Herriko Unibertsitatea [España] = University of the Basque Country [Spain] = Université du pays basque [Espagne]
23 CALTECH - California Institute of Technology
24 The University of Tennessee [Knoxville]
25 IRAP - Institut de recherche en astrophysique et planétologie
26 UF - University of Florida [Gainesville]
27 WGU Nevada - University of Nevada [Las Vegas]
28 Carnegie Institution for Science
29 Pôle Planétologie du LESIA
H. Kalucha
C. Royer
J H Haber
K M Stack
J I Simon
P. Gasda
B S Kathir
R. Barnes
S. Siljeström
J. Maki
Felipe Gómez
Thierry Fouchet
Roger C. Wiens

Résumé

The Mars 2020 Perseverance rover discovered fine‐grained clastic sedimentary rocks in the “Hogwallow Flats” member of the “Shenandoah” formation at Jezero crater, Mars. The Hogwallow Flats member shows evidence of multiple phases of diagenesis including Fe/Mg‐sulfate‐rich (20–30 wt. %) outcrop transitioning downward into red‐purple‐gray mottled outcrop, Fe/Mg clay minerals and oxides, putative concretions, occasional Ca sulfate‐filled fractures, and variable redox state over small (cm) spatial scales. This work uses Mastcam‐Z and SuperCam instrument data to characterize and interpret the sedimentary facies, mineralogy and diagenetic features of the Hogwallow Flats member. The lateral continuity of bedrock similar in tone and morphology to Hogwallow Flats that occurs over several km within the western Jezero sedimentary fan suggests widespread deposition in a lacustrine or alluvial floodplain setting. Following deposition, sediments interacted with multiple fluids of variable redox state and salinity under habitable conditions. Three drilled sample cores were collected from this interval of the Shenandoah formation as part of the Mars Sample Return campaign. These samples have very high potential to preserve organic compounds and biosignatures. Drill cores may partially include dark‐toned mottled outcrop that lies directly below light‐toned, sulfate‐cemented outcrop. This facies may represent some of the least oxidized material observed at this interval of the Shenandoah formation. This work reconstructs the diagenetic history of the Hogwallow Flats member and discusses implications for biosignature preservation in rock samples for possible return to Earth.

Fichier principal
Vignette du fichier
Broz2024 - Diagenetic History -JGR Planets.pdf (22.56 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-04774910 , version 1 (09-11-2024)

Licence

Identifiants

Citer

A P Broz, B. Horgan, H. Kalucha, J R Johnson, C. Royer, et al.. Diagenetic History and Biosignature Preservation Potential of Fine‐Grained Rocks at Hogwallow Flats, Jezero Crater, Mars. Journal of Geophysical Research. Planets, 2024, 129 (11), ⟨10.1029/2024JE008520⟩. ⟨hal-04774910⟩
360 Consultations
114 Téléchargements

Altmetric

Partager

  • More