Dissected plateau Dissected plateau A dissected plateau is a plateau area that has been severely eroded so that the relief is sharp. Such an area may be referred to as mountainous, but dissected plateaus are distinguishable from orogenic mountain belts by the lack of folding, metamorphism, extensive faulting, or magmatic activity that accompanies orogeny. The Allegheny Plateau, the Cumberland Plateau, the Ozark Plateau, and the Catskill Mountains in the United States and the Blue Mountains in Australia and the Deccan Plateau in India are examples of dissected plateaus formed after regional uplift. These older uplifts have been eroded by creeks and rivers
Thompson Plateau at the focus of which is the town of Merritt, British Columbia. Towards its southern edges, the plateau is fairly mountainous and includes the ski area at Apex (west of Penticton), as well as the small but rugged Kruger Range which runs south from there to the confluence of the Similkameen and Okanagan Rivers. The Thompson Plateau contains Nicola Athapaskan, Nlaka'pamux and Syilx settlements. The Nlaka'pamux peoples of the plateau were known as Cawa'xamux or Tcawa'xamux Nlaka'pamux settlements include: Syilx settlements include: The rocks underlying the Thompson Plateau originated in the Pacific and were appended to the North American Plate