Davis's proposed landscape-development states
Davis's proposed landscape-development states. The morphology shown is not actually time-indicative. For example, A could be a gully system in soft sediment or a canyon such as the Royal Gorge in Colorado, which is millions of years old. The ridge-ravine topography of B would normally develop under humid conditions, but the river meandering on alluvium indicates a prior or extraneous non-humid aggrading mechanism. The riverine plain of C implies a complex history of planation and aggradation in a current fluvial mode.
continental landform
geology
Also known as: landform, continental
continental landform, any conspicuous topographic feature on the largest land areas of the Earth. Familiar examples are mountains (including volcanic cones), plateaus, and valleys. (The term landform also can be applied to related features that occur on the floor of the Earth’s ocean basins, as, for example, seamounts, mid-oceanic ridges, and submarine canyons.) Such structures are rendered unique by the tectonic mechanisms that generate them and by the climatically controlled denudational systems that modify them...