erosional debris

См. также в других словарях:

• river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …   Universalium

• mass movement — an organized effort by a large number of people, esp. those not forming part of the elite of a given society, to bring about pervasive changes in existing social, economic, or political institutions, frequently characterized by charismatic… …   Universalium

• continental shelf — Physical Geog. the part of a continent that is submerged in relatively shallow sea. [1940 45] * * * Broad, relatively shallow submarine platform that forms a border to a continent, typically extending from the coast to depths of 330–660 ft… …   Universalium

• erosion — erosional, adj. /i roh zheuhn/, n. 1. the act or state of eroding; state of being eroded. 2. the process by which the surface of the earth is worn away by the action of water, glaciers, winds, waves, etc. [1535 45; < L erosion (s. of erosio). See …   Universalium

• glacial landform — ▪ geology Introduction  any product of flowing ice and meltwater. Such landforms are being produced today in glaciated areas, such as Greenland, Antarctica, and many of the world s higher mountain ranges. In addition, large expansions of present… …   Universalium

• coastal landforms — ▪ geology Introduction       any of the relief features present along any coast, the result of a combination of processes, sediments, and the geology of the coast itself.       The coastal environment of the world is made up of a wide variety of… …   Universalium

• valley — valleylike, adj. /val ee/, n., pl. valleys. 1. an elongated depression between uplands, hills, or mountains, esp. one following the course of a stream. 2. an extensive, more or less flat, and relatively low region drained by a great river system …   Universalium

• continental landform — ▪ geology Introduction       any conspicuous topographic feature on the largest land areas of the Earth. Familiar examples are mountains (including volcanic (volcanism) cones), plateaus, and valleys. (The term landform also can be applied to… …   Universalium

• Glacier — This article is about the geological formation. For other uses, see Glacier (disambiguation). The Baltoro Glacier in the Karakoram, Kashmir, Northern Pakistan. At 62 kilometres (39 mi) in length, it is one of the longest alpine glaciers on… …   Wikipedia

• Martian dichotomy — The most conspicuous feature of Martian surface geology is a sharp contrast, known as the Martian dichotomy, between the rugged southern highlands and the relatively smooth northern basins. The two hemispheres differ in elevation by 1 to… …   Wikipedia

• North America — North American. the northern continent of the Western Hemisphere, extending from Central America to the Arctic Ocean. Highest point, Mt. McKinley, 20,300 ft. (6187 m); lowest, Death Valley, 276 ft. (84 m) below sea level. 400,000,000 including… …   Universalium