crustal plates

См. также в других словарях:

• Crustal recycling — Understanding predictions of mantle dynamics helps geoscientists predict where subducted crust will end up. Crustal recycling is a tectonic process by which surface material from the lithosphere is recycled into the mantle during subduction. The… …   Wikipedia

• plate tectonics — plate tectonic, adj. Geol. a theory of global tectonics in which the lithosphere is divided into a number of crustal plates, each of which moves on the plastic asthenosphere more or less independently to collide with, slide under, or move past… …   Universalium

• Earth and Space Sciences — ▪ 1996 Introduction GEOLOGY AND GEOCHEMISTRY       In 1995 significant developments took place in the realm of geologic mapping, which provides the foundation for the presentation and comparison of data in the Earth sciences. The most important… …   Universalium

• Antarctica — /ant ahrk ti keuh, ahr ti /, n. the continent surrounding the South Pole: almost entirely covered by an ice sheet. ab. 5,000,000 sq. mi. (12,950,000 sq. km). Also called Antarctic Continent. * * * Antarctica Introduction Antarctica Background:… …   Universalium

• Galapagos Microplate — The Galapagos Microplate is a small tectonic plate off the west coast of South America near the Galapagos Islands. It differs from most other crustal plates in that it is rotating clockwise between three much larger crustal plates around it, the… …   Wikipedia

• dinosaur — /duy neuh sawr /, n. 1. any chiefly terrestrial, herbivorous or carnivorous reptile of the extinct orders Saurischia and Ornithischia, from the Mesozoic Era, certain species of which are the largest known land animals. 2. something that is… …   Universalium

• 1972 Nicaragua earthquake — Earthquake title=1972 Nicaragua earthquake date= December 23, 1972 magnitude = 6.2 Mw depth=convert|5|km|mi|0 location= countries affected = NIC tsunami = none casualties = 5,000The 1972 Nicaragua earthquake refers to the earthquake that occurred …   Wikipedia

• India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… …   Universalium

• North Galapagos Microplate — The North Galapagos Microplate is a small tectonic plate off the west coast of South America north of the Galapagos Islands.Coordinates: 3°45′N 101°45′W / 3.75°N …   Wikipedia

• continental drift — Geol. the lateral movement of continents resulting from the motion of crustal plates. Cf. plate tectonics. [1925 30] * * * Large scale movements of continents over the course of geologic time. The first complete theory of continental drift was… …   Universalium

• Asthenosphere — Under the thin oceanic plates the asthenosphere is usually much closer to the seafloor surface, and at mid ocean ridges it rises to within a few kilometers of the ocean floor. The upper part of the asthenosphere is believed to be the zone upon… …   Wikipedia