Fig. 4


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Published crustal scale cross-sectional models across the Pyrenees from west to east, located in Figure 3. Authors estimated total shortening across the orogen is shown in brackets. (a) Interpretation of the deep seismic tomography model of Wang et al. (2016) along P1 adapted from Saspiturry et al. (2020) and Lehujeur et al. (2021). These authors do not provide a shortening estimate and do not distinguish upper and lower crust. (b) J7-S8 adapted from Teixell et al. (2016) (114 km). (c) J6-S6 adapted from Espurt et al. (2019a) (127 km). (d) J4-S4 (ECORS central deep seismic line) based on Muñoz (1992) and redrawn from Mencos et al. (2015) (147 km). (e) J3-S3 simplified from Grool et al. (2018) (> 111 km, distribution shown). (f) J2-S2 adapted from Ternois et al. (2019a, b) (43 km, distribution shown). Abbreviations: SPFT: South Pyrenean Frontal Thrust; NPFT: North Pyrenean Frontal Thrust; NPF: North Pyrenean Fault; IMZ: Internal Metamorphic Zone. The 3M Fault is identified on sections d, e and f.

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