Microtextural investigation (SEM and TEM study) of phyllosilicates in a major thrust fault zone (Monte Perdido, southern Pyrenees): impact on fault reactivation

Buatier, MartineLacroix, BriceLabaume, PierreMoutarlier, VirginieCharpentier, DelphineSizun, Jean PierreTravé i Herrero, Anna2013-04-052013-04-052012-08-181661-8726https://hdl.handle.net/2445/34456Thrusting fault zone in foreland basins are characterized by highly foliated zones generally enriched in phyllosilicates which can play a major role on the mechanical behaviour of the fault. In this context, investigations of synkinematic clay minerals permit to determine the origin of the fluid from which they precipitated as well as the mechanisms of deformation. Our study is focused on clay mineral assemblages (illite and chlorite) in a major thrust fault located in the Monte Perdido massif (southern Pyrenees), a shallow thrust that affects upper cretaceouspaleocene platform carbonates and lower Eocene marls and turbidites.12 p.application/pdfeng(c) Swiss Geological Society, 2012SilicatsPirineu aragonès (Aragó)SilicatesAragon Pyrenees (Aragon)Microtextural investigation (SEM and TEM study) of phyllosilicates in a major thrust fault zone (Monte Perdido, southern Pyrenees): impact on fault reactivationinfo:eu-repo/semantics/article6160292013-04-05info:eu-repo/semantics/openAccess