| Title: |
Physical Sedimentology and Stratigraphy of the lower Western Fan (Shenandoah formation) Jezero Crater, Mars: ; Physical Sedimentology and Stratigraphy of the lower Western Fan (Shenandoah formation) Jezero Crater, Mars:: Results from the Mars 2020 “Delta Front” Campaign |
| Authors: |
Ives, Libby, R.W.; Stack‐Morgan, Katie, M.; Gupta, Sanjeev; Caravaca, Gwénaël; Russell, Patrick; Shuster, David L.; Williams, Amy, J.; Holm-Alwmark, Sanna; Barnes, Robert; Bell, Jim F.; Beyssac, Olivier; Brown, Adrian; Flannery, David; Frydenvang, Jens; Grotzinger, John; Lamb, Michael P.; Horgan, Briony; Hurowitz, Joel A.; Kalucha, Hemani; Kanine, Oak, A.; Núñez, Jorge; Randazzo, Nicolas; Seeger, Christina; Simon, Justin I.; Tice, Michael M.; Tebolt, Michelle; Kah, Linda C.; Williams, Rebecca M.E.; Amundsen, Hans; Annex, Andrew M. |
| Contributors: |
Jet Propulsion Laboratory (JPL); NASA-California Institute of Technology (CALTECH); Department of Earth Science and Engineering Imperial College London; Imperial College London; Institut de recherche en astrophysique et planétologie (IRAP); Université Toulouse III - Paul Sabatier (UT3); Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS); Department of Earth, Planetary and Space Sciences Los Angeles (EPSS); University of California Los Angeles (UCLA); University of California (UC)-University of California (UC); Berkeley Geochronology Center (BGC); Department of Geological Sciences Gainesville (UF|Geological); University of Florida Gainesville (UF); University of Copenhagen = Københavns Universitet (UCPH); Arizona State University Tempe (ASU); Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC); Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement IRD : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS); NASA Headquarters; Queensland University of Technology Brisbane (QUT); Caltech Division of Geological and Planetary Sciences; California Institute of Technology (CALTECH); Purdue University West Lafayette; Department of Geosciences Stony Brook; Stony Brook University SUNY (SBU); State University of New York (SUNY)-State University of New York (SUNY); Johns Hopkins University Applied Physics Laboratory Laurel, MD (APL); University of Alberta; NASA Johnson Space Center (JSC); NASA; Texas A&M University College Station; University of Texas at Austin Austin; Department of Earth and Planetary Sciences Knoxville; The University of Tennessee Knoxville; Planetary Science Institute Tucson (PSI); Vestfonna Geophysical |
| Source: |
International Conference on Fluvial Sedimentology 2023 ; https://hal.science/hal-04052730 ; International Conference on Fluvial Sedimentology 2023, Jul 2023, Riva Del Garda, Italy ; https://www.icfs2023.it/ |
| Publisher Information: |
CCSD |
| Publication Year: |
2023 |
| Collection: |
Université Toulouse III - Paul Sabatier: HAL-UPS |
| Subject Terms: |
Mars; Mars 2020; jezero crater; perseverance; Shenandoah formatin; sedimentology; delta; stratigraphy; [SDU]Sciences of the Universe [physics]; [SDU.STU]Sciences of the Universe [physics]/Earth Sciences; [SDU.STU.PL]Sciences of the Universe [physics]/Earth Sciences/Planetology; [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy |
| Subject Geographic: |
Riva Del Garda; Italy |
| Description: |
International audience ; The Perseverance rover is exploring a sedimentary deposit within the Late Noachian-aged (4.0-4.8 Ga) Jezero Crater interpreted to be the remnants of a delta. From April 2022 through February 2023, Perseverance investigated the basal 25 m of sediments exposed in the fan’s eastern scarp. Rover instruments collected a suite of imaging, geochemical, mineralogical, and ground-penetrating radar data.Perseverance made detailed observations through two sections of the lower fan ~600 m apart. Similar facies and stratigraphic trends are present in both sections. Each section contains two coarsening-up successions. While some finer-grained units are laterally continuous between the two sections, the coarser-grained bodies that cap each section are laterally discontinuous and do not extend between sections.Both sequences are 10 - 15 m thick. Their lower strata are dominated by sulfate-cemented, planar laminated, very fine- to medium-grained sandstone and siltstone with rare low-angle truncations. Soft-sediment deformation occurs in the form of decimeter-scale lateral folds. Laminae are normally graded. These sequences are capped by meter-scale thick sheets of coarse-grained sandstone, pebbly sandstones, and conglomerates that are variably low-angle cross-bedded, trough cross-bedded, and planar-stratified. Plane beds are massive or normally graded.Two hypotheses for the depositional environment have emerged for this succession: a sub-aerial setting with extensive “overbank” facies and shallow braided channels and a proximal pro-deltaic setting with deposition driven by hyperpycnal flows. These hypotheses will be tested against observations made by Perseverance as it traverses the “Fan Top” and by more comprehensive studies of the “Delta Front” data. |
| Document Type: |
conference object |
| Language: |
English |
| Availability: |
https://hal.science/hal-04052730; https://hal.science/hal-04052730v1/document; https://hal.science/hal-04052730v1/file/ives-icfs-2023-abstract-v3.pdf |
| Rights: |
https://about.hal.science/hal-authorisation-v1/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.1088E64B |
| Database: |
BASE |