Rock Deformation The direction of the line formed by the intersection of a horizontal plane with a bedding/fault plane is called strike. The angle formed by the intersection of a bedding/fault plane and the horizontal plane measured in a vertical plane perpendicular to the strike is called dip The symbol used by geologist to display strike and dip on a map is the following: Orientation of planar features in space Fig.11.63 Rock Deformation The direction of the line formed by the intersection of a horizontal plane with a bedding/fault plane is called strike. The angle formed by the intersection of a bedding/fault plane and the horizontal plane measured in a vertical plane perpendicular to the strike is called dip. The symbol used by geologist to display strike and dip on a map is the following: 45 Fig. 11.6 Orientation of planar features in space