It was formed from an uplift which raised an ancient seabed of sandstone conglomerate and folded it into a dramatic anticline (like an inverted V shape). Older layers appear in the center of anticlines in map view. A monocline (or, rarely, a monoform) is a step-like fold in rock strata consisting of a zone of steeper dip within an otherwise horizontal or gently-dipping sequence. “A” is for “anticline,” and the capital letter “A” represents the shape of the fold. block diagram of a monocline The Grandview-Phantom Monocline in the Grand Canyon , Arizona Syncline 3. A monocline is a step-like fold in rock strata consisting of a zone of steeper dip within an otherwise horizontal or gently-dipping sequence. oldest beds in the center of the folds (both in map/transverse cross-section) 2.) Strike and Dip Symbols; Strike and dip are a way of representing the three-dimensional orientation of a planar surface on a two-dimensional map. Plunging hinge (c) A monocline looks like a stair step, and is commonly draped over a fault block. Anticline. As the world's largest monocline Mt Augustus has a central ridge which is almost 8 kilometres long and it is estimated that the rock of the mountain is some 1000 million years old. Figure 22. (f) A basin has the Basin 5. Synclines are folds in which each half of the fold dips toward the trough of the fold. Anticline 2. The beds dip toward the hinge. – Strike is the compass direction of the intersection of the plane with the (a) An anticline looks like an arch. PLUNGING FOLD : A fold whose axis is inclined at an angle (0