upper crust world

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• upper crust — Synonyms and related words: FFVs, Vanity Fair, ancienne noblesse, aristocracy, baronage, baronetage, barons, beau monde, beautiful people, best people, blue blood, cafe society, carriage trade, chivalry, cream, cream of society, drawing room,… …   Moby Thesaurus

• Crust (geology) — Geologic provinces of the world (USGS)   Shield …   Wikipedia

• Antiquity of the World —     Antiquity of the World     † Catholic Encyclopedia ► Antiquity of the World     Various attempts have been made to establish the age of the world. Two groups of scientists have especially busied themselves with this question: physicists and… …   Catholic encyclopedia

• Oceanic crust — Age of oceanic crust. The red is most recent, and blue is the oldest. Oceanic crust is the part of Earth s lithosphere that surfaces in the ocean basins. Oceanic crust is primarily composed of mafic rocks, or sima, which is rich in iron and… …   Wikipedia

• Frederic M. Halford — Frederic Michael Halford Frederic M. Halford Detached Badger tying flies[1] Born Frederic Michael Hyam 13 April 1844(1844 04 13) Birmingha …   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

• 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

• 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

• rock — rock1 rockless, adj. rocklike, adj. /rok/, n. 1. a large mass of stone forming a hill, cliff, promontory, or the like. 2. Geol. a. mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable… …   Universalium

• Rock — /rok/, n. a male given name. * * * I In geology, a naturally occurring and coherent aggregate of minerals. The three major classes of rock igneous, sedimentary, and metamorphic are based on the processes that formed them. These three classes are… …   Universalium

• dating — I In geology and archaeology, the process of determining an object s or event s place within a chronological scheme. Scientists may use either relative dating, in which items are sequenced on the basis of stratigraphic clues (see stratigraphy) or …   Universalium