![]() ![]() This fold involves a slight bend in otherwise parallel layers of rock. The simplest type of fold is called a monocline. ![]() Folds are most visible in rocks that contain layering. All these tectonic processes create sedimentary basins of various types.įolding: A fold can be defined as a bend in rock that is the response to compressional forces. This takes place by ocean-continent collision (e.g., the Andes), continent-continent collision (the Alps and the Himalayas), or island arc-continent collision (e.g., New Guinea). Orogenesis is the process of building new mountain ranges by the convergence of tectonic plates. The various internal forces that help in formation of various landforms are Orogenesis, Folding and Faulting, volcanic disturbances. Meanwhile Exogenic (external) forces are working vigorously to wear away the surface. The earth’s crust is constantly undergoing geological changes caused by Endogenic (internal) forces which create new relief features.
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