 If the effectiveness of the decollement becomes reduced, the thrust will tend to cut up the section to a higher stratigraphic level until it reaches another effective decollement where it can continue as bedding parallel flat.The part of the thrust linking the two flats is known as a "ramp" and typically forms at an angle of about 15°–30° to the bedding.Continued displacement on a thrust over a ramp produces a characteristic fold geometry known as a "ramp anticline" or, more generally, as a "fault-bend fold".