2/ The folds are asymmetric

3/ The pervasive axial planar cleavage implies a depth>4-5km

4/ Rock formations are younger in a syncline hinges.

5/ No the axial trace is seen on a map or the ground surface, it is the line that joins fold closures. Fold axis (or hinge line) is the line that connects points of maximum curvature along the fold hinge.

6/ An overturn fold has a limb overturned with younging pointing downward (layers become younger from top to bottom)

7/ Recumbents folds

8/ B/ a steeply dipping fold axis.

9/ A/ a steeply dipping axial plane.

10/ The true geometry of folds is read from a plane perpendicular to the fold axis.

11/ Fold superimposition implies folded axial planar surface, folded fold hinge and folded axial trace.

12/ A cleavage that results from the microfolding of a planar surface (bedding or former cleavage).

13/ Pressure-solution.

14/ Cleavage and bedding are at 90º from each others.

15/ The cleavage is parallel to the bedding.