continental accretion

  • 1 continental shield — Any of the large stable areas of low relief (little variation in elevations) in the Earth s crust that are composed of Precambrian crystalline rocks. These rocks are always more than 570 million years old, and some are as old as 2–3 billion years …

    Universalium

  • 2 accrétion — [ akresjɔ̃ ] n. f. • 1751; lat. accretio ♦ Sc. Processus d agglomération d éléments inorganiques, solides ou fluides. Accrétion de nuages, de dunes, de planètes. ● accrétion nom féminin (latin médiéval accretio, action d augmenter) Capture de… …

    Encyclopédie Universelle

  • 3 Accretion (geology) — Accretion is a process by which material is added to a tectonic plate. This material may be sediment, volcanic arcs, seamounts or other igneous features. When two tectonic plates collide, one of the plates may slide under the other. This process… …

    Wikipedia

  • 4 Accrétion continentale — ● Accrétion continentale processus d accroissement continental se produisant au cours des orogenèses successives …

    Encyclopédie Universelle

  • 5 Continental shelf — Marine habitats Anatomy of a continental shelf off the south eastern coast of the United States Littoral zone Intertidal zone …

    Wikipedia

  • 6 Continental crust — The thickness of the Earth s crust (km). The continental crust is the layer of igneous, sedimentary, and metamorphic rocks which form the continents and the areas of shallow seabed close to their shores, known as continental shelves. This layer… …

    Wikipedia

  • 7 Continental margin —   Sediment   …

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  • 8 South America — South American. a continent in the S part of the Western Hemisphere. 271,000,000; ab. 6,900,000 sq. mi. (17,871,000 sq. km). * * * Continent, Western Hemisphere. The world s fourth largest continent, it is bounded by the Caribbean Sea to the… …

    Universalium

  • 9 Cambrian Period — Oldest time division of the Paleozoic Era. During the Cambrian, 543–490 million years ago, there were widespread seas and several scattered landmasses. The largest continent was Gondwana. The average climate was probably warmer than today, with… …

    Universalium

  • 10 Terreno (geología) — Este artículo o sección necesita referencias que aparezcan en una publicación acreditada, como revistas especializadas, monografías, prensa diaria o páginas de Internet fidedignas. Puedes añadirlas así o avisar …

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  • 11 аккреция континентов — Приращение континента путем причленения, механического скучивания континентальных или иных блоков различного размера в результате их дрейфа. [Словарь геологических терминов и понятий. Томский Государственный Университет] Тематики геология,… …

    Справочник технического переводчика

  • 12 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

  • 13 AMÉRIQUE - Géologie — L’Amérique – ou, pour être plus précis, les Amériques – est constituée de trois ensembles présentant des différences marquées, tant dans leurs structures, héritées du passé géologique (fig. 1 et hors texte, pl. XII à XVI), que dans leurs… …

    Encyclopédie Universelle

  • 14 Superior craton — in the west. The western margin extends from northern Minnesota through eastern Manitoba to northwestern Ontario.The formation of the Superior craton is best explained within the context of 2.72 2.68 Ga accretion of small continental plates and… …

    Wikipedia

  • 15 Asia — /ay zheuh, ay sheuh/, n. a continent bounded by Europe and the Arctic, Pacific, and Indian oceans. 2,896,700,000; ab. 16,000,000 sq. mi. (41,440,000 sq. km). * * * I Largest continent on Earth. It is bounded by the Arctic Ocean, the Pacific Ocean …

    Universalium

  • 16 History of the Earth — For the history of modern humans, see History of the world. Geological time put in a diagram called a geological clock, showing the relative lengths of the eons of the Earth s history The history of the Earth describes the most important events… …

    Wikipedia

  • 17 Trans-Hudson orogeny — [ North American craton, also called Laurentia.] [ Wyoming, Superior and Hearne cratons] The Trans Hudson orogeny, Trans Hudsonian orogeny, Trans Hudson orogen (THO), or Trans Hudson Orogen Transect (THOT), (also referred to as the Trans… …

    Wikipedia

  • 18 earth — /errth/, n. 1. (often cap.) the planet third in order from the sun, having an equatorial diameter of 7926 mi. (12,755 km) and a polar diameter of 7900 mi. (12,714 km), a mean distance from the sun of 92.9 million mi. (149.6 million km), and a… …

    Universalium

  • 19 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

  • 20 SUBDUCTION — La subduction peut être définie comme la plongée d’une plaque de lithosphère océanique sous une autre plaque lithosphérique, jusqu’à une profondeur de 700 kilomètres, au delà de laquelle elle est recyclée dans le manteau. Cette plongée est… …

    Encyclopédie Universelle

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