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Communication Dans Un Congrès Année : 2024

Overview of halite detections by chemcam in Gale Crater, Mars

Patrick J. Gasda
Benton Clark
Alberto G Fairén
Nina L Lanza

Résumé

Since 2012, the Curiosity rover has been exploring geological records of a paleo-lacustrine environment in Gale crater. It started with the fluvio-deltaic and lacustrine deposits in the Bradbury Group, followed by ∼300 m of stratigraphy through the Murray formation (from the Pahrump Hills to the Jura member) dominated by mudstones and occasionally heterolithic mudstones, siltstones and sandstones. It also crossed the unconformity with the overlying Stimson formation, dominated by aeolian sandstones, and the Vera Rubin Ridge, an erosion-resistant section of the Murray fm., which has undergone extensive diagenesis[1]. From Sol 2300 to 3072, Curiosity has explored the Glen Torridon region, previously named “Clay-bearing unit”. Since Sol 3100 (Mont Mercou), the rover entered the basal Layered Sulfate unit with the objective of documenting a possible major change in Mars climate history. Evaporitic salts could represent a geochemical marker of this transition. Here, we provide an overview of previous halite detections by ChemCam [2, 3] and report on new detections made in the sulfate-bearing unit.
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Dates et versions

hal-04650462 , version 1 (16-07-2024)

Identifiants

  • HAL Id : hal-04650462 , version 1

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Pierre-Yves Meslin, William Rapin, Olivier Forni, Agnès Cousin, Olivier Gasnault, et al.. Overview of halite detections by chemcam in Gale Crater, Mars. Tenth International Conference on Mars 2024, Lunar and Planetary Institute, Jul 2024, Pasadena (California), United States. pp.3421. ⟨hal-04650462⟩
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