Page 83 - Microtectonics

4.2 · Foliations 71

Fig. 4.4. Folded bedding S (primary foliation – subvertical) with spaced cleavage S (secondary foliation – close to horizontal), developed in
2
0
dark layers. An older slaty cleavage (S 1 ) is present subparallel to S 0 but not visible at this magnification. Note variation in thickness and
composition of bedding. (A detail of the central upper part is presented in Fig. 4.21). Pyrenees, Spain. Width of view 7 mm. PPL

Fig. 4.5. Secondary foliation (S 2 ) (horizontal) developed by differentiation in limbs of crenulations. Remnant bedding (S 0 ) is visible in lower
right corner. S is parallel to S . The secondary compositional layering (S ) has a monotonous bimodal character with a horizontal symme-
2
1
0
try plane. Leiden Collection. Width of view 15 mm. Polars at 45°