a and b: General view of the eastern end of St-Martin-de-Londres Priabonian basin, an asymmetrical growth syncline, unconformable over the synorogenic Bartonian breccia, which were generated along the Pyrenean Pic-St-Loup thrust. c: Overturned Priabonian sandstone along the southern limb of the asymmetric syncline. d: Detail of the previous outcrop displaying small scale reverse faults that provide evidence for N-S compressive deformation. e: Deformed root traces, evidence for pre-lithification N-S compressive deformation of the Priabonian sandstone bed, prior to its folding. Outcrop location in Figure 13.