Bedding and Cleavage, Oslo, Norway

This is a small cliff on the island of Hoved√łya, Oslo, Norway. The strata are Ordovician limestones, marls and shales. The two features you should note and trace here are the bedding planes and a second planar surface, a tectonic cleavage, that is at an angle to bedding.

Questions that may arise include the following. What is causing the cleavage to be evident here? What is the significance of the angle between bedding and cleavage? Why is the cleavage much more evident in the one layer than the other?

Link to interpreted version.

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