Using 3D reconstructions of centimeter-scale sedimentary structures to document changes in the depositional settings of Glen Torridon region (Gale crater, Mars)

Gwénaël Caravaca (1) , Nicolas Mangold (1) , Laetitia Le Deit (1) , Stéphane Le Mouélic (1) , Erwin Dehouck (2) , Olivier Gasnault (3) , Kenneth Edgett (4) , Frances Rivera-Hernández (5) , Christoher M Fedo (6) , Roger Wiens (7)

1 LPG - Laboratoire de Planétologie et Géodynamique [UMR 6112]
2 LGL-TPE - Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement
3 IRAP - Institut de recherche en astrophysique et planétologie
4 MSSS - Malin Space Science Systems
5 Department of Earth Sciences [Hanover]
6 Department of Earth and Planetary Sciences [Knoxville]
7 LANL - Los Alamos National Laboratory

The Glen Torridon (GT) region in Gale crater, has been explored using the Mars Science Laboratory rover, Curiosity, since January 2019 (~Sol 2300) to document clay-bearing rocks initially detected via orbiter data [1]. The rocks are part of the Murray formation, with lower GT consisting of the Jura member mudstones generally associated with a lacustrine deposition [2] overlain by laminated and cross-bedded fine-grained sandstones of the Knockfarril Hill (KfH) member. The latter hint at a sharp change in depositional environment that is critical to investigate [2]. To that extent, we use high-resolution photogrammetric micro-Digital Outcrop Models (DOM) to characterize centimeter-scale sedimentary structures in the KfH member to shed light on their implications in terms of depositional settings and dynamics.

Mots clés: Mars; Gale crater; Glen Torridon; DOM; photogrammétrie; sedimentary structures; paleoenvironment

Domaines: Planétologie; Stratigraphie; Sciences de la Terre

Gwénaël Caravaca, Nicolas Mangold, Laetitia Le Deit, Stéphane Le Mouélic, Erwin Dehouck, et al.. Using 3D reconstructions of centimeter-scale sedimentary structures to document changes in the depositional settings of Glen Torridon region (Gale crater, Mars). Europlanet Science Congress 2020, Sep 2020, Online, Germany. ⟨10.5194/epsc2020-49⟩. ⟨hal-02933166⟩