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These classifications overlap with the geological definitions of "upland" and "lowland". In geology an "upland" is generally considered to be land that is at a higher elevation than the alluvial plain or stream terrace, which are considered to be "lowlands". The term "bottomland" refers to low-lying alluvial land near a river.
Dale – Low area between hills, often with a river running through it; Defile – Narrow pass or gorge between mountains or hills; Dell – Small secluded hollow; Doab, also known as Interfluve – Land between two converging, or confluent, rivers; Draw – Terrain feature formed by two parallel ridges or spurs with low ground in between
Plain of Campidano, Italy. A plain or flatland is a flat expanse of land with a layer of grass that generally does not change much in elevation, and is primarily treeless.. Plains occur as lowlands along valleys or at the base of mountains, as coastal plains, and as plateaus or uplands.
Also amphidrome and tidal node. A geographical location where there is little or no tide, i.e. where the tidal amplitude is zero or nearly zero because the height of sea level does not change appreciably over time (meaning there is no high tide or low tide), and around which a tidal crest circulates once per tidal period (approximately every 12 hours). Tidal amplitude increases, though not ...
A rift valley is a linear shaped lowland between several highlands or mountain ranges produced by the action of a geologic rift. Rifts are formed as a result of the pulling apart of the lithosphere due to extensional tectonics. The linear depression may subsequently be further deepened by the forces of erosion.
Whittow describes a saddle as "low point or col on a ridge between two summits", [1] whilst the Oxford Dictionary of English implies that a col is the lowest point on the saddle. [2] Monkhouse describes a saddle as a "broad, flat col in a ridge between two mountain summits." [3]
Rocky Mountain foothills near Denver, Colorado. Foothills or piedmont are geographically defined as gradual increases in elevation at the base of a mountain range, higher hill range or an upland area. They are a transition zone between plains and low relief hills and the adjacent topographically higher mountains, hills, and uplands. [1]
About 60 km (35 miles) long in north–south direction and only 13 km (8 miles) wide, it is subdivided into two parts: the western "Low Shephelah", which starts at an altitude of ca. 150 metres above sea level and rises to no more than ca. 200 metres above the Coastal Plain, and the eastern "High Shephelah" rising to altitudes between 250 and ...