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When there is a time lag between the inception of folding and development of cleavage, the cleavage may not be strictly axial planar to folds but may have an angular relationship with fold 

elements and sometimes, this cleavage, which is genetically related to that very fold forming event may cross cut both the limbs of a fold. Such folds are called transected folds and were first described by Powell (1974) from Tasmania. Borraidale divided the types of transection into Type 1 when the cleavage seems to be parallel to axial plane in fold profile but cuts the hinge. The type 2 transection is such that the cleavage is not axial planar in fold profile but makes some small angle with the axial plane of the fold. But its trace is parallel to the fold hinge (see figures). The third type of transection is the combination of both type 1 and type 2,

hat is the cleavage bears angular relationship with both the fold hinge and the fold axial plane. It was earlier believed that the transected folds may be produced only under a noncoaxial strain history (heterogeneous simple shear, but Borraidale showed by theoretical analysis that even a coaxial strain history can produce transected folds.

For example if a layer is inclined asymmetrically with all three principal planes then, the cleavage which will always develop parallel to the XY principal plane of the finite deformation ellipsoid, will cut across the hinges and axial planes of the asymmetrical S or Z folds that are produced and the minor or mesoscopic outcrop scale folds will appear to be of of the transected type. A more detailed discussion on these will be dealt with on Fabrics when this also goes on line.