RT Journal Article T1 Geometría de cabalgamientos asociados a flancos normales de pliegues (N de Biescas, Zona Surpirenaica) T1 Geometry of thrusting related to normal limbs of chevron folds (North of Biescas, South Pyrenean Zone) A1 Rodríguez, Lidia A1 Cuevas, Julia AB Paleogene rocks crop out in the South Pyrenean Zone as a flysch sequence of calcarenites and mudstonesshowing asymmetric south-verging chevron folds, with associated axial plane foliation. Thrust faults aregenerated at the long limbs of the chevron folds. They have duplex type geometry and, in particular,geometric features similar to those that characterize flexural slip duplexes. These show planar or gentlycurved roof and floor thrusts and the absence of ramp anticlines. The hanging-wall shows southwardssense of movement, which is in agreement with the vergence of other structures in the work area.Because pinnate joints related to thrusts planes cut clearly the axial plane foliation, thrusts are generatedlater than angular folds YR 2008 FD 2008 LK http://hdl.handle.net/10272/8273 UL http://hdl.handle.net/10272/8273 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026