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Article Dans Une Revue Journal of Structural Geology Année : 2020

Structural analysis of sulfate vein networks in Gale crater (Mars)

Résumé

The Curiosity rover's campaign in the Gale crater on Mars provides a large set of close-up images of sedimentary formations outcrops displaying a variety of diagenetic features such as light-toned veins, nodules and raised ridges. Through 2D and 3D analyses of Mastcam images we herein reconstruct the vein network of a sample area and estimated the stress field. Assessment of the spatial distribution of light-toned veins shows that the basin infillings, after burial and consolidation, experienced a sub-vertical compression and lateral extension coupled with fluid overpressure and cracking. Overall, rock failure and light-toned veins formations could have been generated by an overload produced by infilling material within the basin.
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Dates et versions

hal-02933680 , version 1 (08-09-2020)

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Barbara de Toffoli, Nicolas Mangold, Matteo Massironi, Alain Zanella, Riccardo Pozzobon, et al.. Structural analysis of sulfate vein networks in Gale crater (Mars). Journal of Structural Geology, 2020, 137 (2), pp.104083. ⟨10.1016/j.jsg.2020.104083⟩. ⟨hal-02933680⟩
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