(a) Interpreted NE-ward field view of the Valdria fold pair in the NW part of the Feuilla half-window showing the thickness variation of the upper Aalenian-Callovian across the Valdria anticline and the thickenning of the j2D2 terme across the Valdria normal fault. Stereoplot of poles to Jurassic bedding along the gg’ section from the basement inlier to the Valdria massif. The colours of poles refer to their stratigraphic unit (see legend of the figure) except for Liassic poles which have the same color (purple). The numbers 1 to 3 on the stereoplot are statistically derived eigenvectors with point 3 representing the pi pole. (b) Interpreted eastward field view of the Valdria anticlinal hinge zone showing Kimmeridgian-Tithonian growth strata. (c) NW-SE g”g’ cross-section of the Valdria and Feuilla fold pairs (map trace on Fig. 5). Folds are identified by a number, 2: Valdria syncline; 3: Valdria anticline; 4: Feuilla anticline; 5: Feuilla syncline.