spreading basin

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• Back-arc basin — Back arc basins (or retro arc basins) are geologic features, submarine basins associated with island arcs and subduction zones.They are found at some convergent plate boundaries, presently concentrated in the Western Pacific ocean. Most of them… …   Wikipedia

• Seafloor spreading — Age of oceanic crust; youngest (red) is along spreading centers. Seafloor spreading is a process that occurs at mid ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge. Seafloor… …   Wikipedia

• Commander Basin — Aleutian Basin features. The Commander Basin (alternately Komandorsky Basin) is located between the Shirshov Ridge and the Kamchatka Peninsula. Its southern boundary is the Aleutian arc (see figure) and occupies the western part of the Bering Sea …   Wikipedia

• Oceanic basin — Diagrammatic cross section of an ocean basin, showing the various geographic features Hydrologically, an oceanic basin may be anywhere on Earth that is covered by seawater, but geologically ocean basins are large geologic basins that are below… …   Wikipedia

• Great Basin Indian — ▪ people Introduction  member of any of the indigenous North American peoples inhabiting the traditional culture area comprising almost all of the present day states of Utah and Nevada as well as substantial portions of Oregon, Idaho, Wyoming,… …   Universalium

• Mackenzie Basin — For the basin of the Canadian river, see Mackenzie River. The Mackenzie Country s typical autumn colouration. The Mackenzie Basin (popularly and traditionally known as the Mackenzie Country), is an elliptical intermontane basin, located in the… …   Wikipedia

• Eurasian Basin — The Eurasian Basin, is one of the two major basins into which the North Polar Basin of the Arctic Ocean is split by the Lomonosov Ridge (the other one being the Amerasian Basin). It is an extension of the North Atlantic Basin. It is further split …   Wikipedia

• seafloor spreading hypothesis — ▪ Earth science       theory that oceanic (oceanic ridge) crust forms along submarine mountain zones, known collectively as the midocean ridge system, and spreads out laterally away from them. This idea played a pivotal role in the development of …   Universalium

• Consag Basin — The Consag Basin is a submarine depression in the far northern part of the Gulf of California associated with the East Pacific Rise. It lies south of the Wagner Basin with which it is closely linked. The depression is a result of subsidence… …   Wikipedia

• Delfin Basin — The Delfin Basin (delfin is Spanish for dolphin ) is a pair of interconnected submarine depressions located on the seabed of the northern Gulf of California.[1] The northernmost of these is called the Upper Delfin Basin while the southernmost is… …   Wikipedia

• sea-floor spreading —   the widening of an ocean basin by the creation of new crust at a divergent margin …   Geography glossary