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sheeted zone

См. также в других словарях:

  • Ophiolite — Ordovician ophiolite in Gros Morne National Park, Newfoundland. An ophiolite (  / …   Wikipedia

  • Precambrian time — Interval of geologic time from с 3. 8 billion years ago, the age of the oldest known rocks, to 544 million years ago, the beginning of the Cambrian Period. This interval represents more than 80% of the geologic record and thus provides important… …   Universalium

  • Komatiite — Komatiites are ultramafic mantle derived volcanic rocks. They have low SiO2, low K2O, low Al2O3, and high to extremely high MgO. They were named for their type locality along the Komati River in South Africa. True komatiites are very rare and… …   Wikipedia

  • Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

  • Charles L. Grant — Charles Lewis Grant (September 12, 1942 – September 15, 2006) was a novelist and short story writer specializing in what he called dark fantasy and quiet horror. He also wrote under the pseudonyms of Geoffrey Marsh, Lionel Fenn, Simon Lake,… …   Wikipedia

  • DORSALES OCÉANIQUES — Les dorsales océaniques (souvent appelées dorsales médio océaniques, bien qu’elles n’occupent pas toujours une position médiane) désignent des chaînes sous marines existant dans tous les bassins océaniques. Alignées sur près de 60 000 kilomètres… …   Encyclopédie Universelle

  • List of Canada's Worst Handyman 2 episodes — This is a list of episodes from Canada s Worst Handyman 2 , the second season of the Canadian television series that seeks to find the worst handyman in the country. Airdates listed are the first air dates on Discovery Channel Canada the date of… …   Wikipedia

  • Komatiit — Handstück aus dem Abitibi Grünsteingürtel nahe Englehart, Kanada. Handstück ist 9 cm breit. Die typischen klingenförmigen Olivinkristalle sind sichtbar, eine Spinifex Textur ist in diesem Handstück jedoch schwach bis fehlend Komatiite sind… …   Deutsch Wikipedia

  • Gabbro — (pronEng|ˈɡæbrəʊ) is a dark, coarse grained, intrusive igneous rock chemically equivalent to basalt. It is a plutonic rock, formed when molten magma is trapped beneath the Earth s surface and cools into a crystalline mass. The vast majority of… …   Wikipedia

  • tunnels and underground excavations — ▪ engineering Introduction        Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening …   Universalium

  • Contourite — A contourite is a sedimentary deposit produced by thermohaline induced deepwater bottom currents and may be influenced by wind or tidal forces.[1][2] Most contourites are formed in continental rise to lower slope settings, although they may occur …   Wikipedia

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