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• Hypercone — of a spherical cone s generatrices (red), parallels (green) and hypermeridians (blue).Due to conformal property of Stereographic Projection,the curves intersect each other orthogonally (in the yellow points) as in 4D.All curves are circles or… …   Wikipedia

• Geology of the Iberian Peninsula — The geology of the Iberian Peninsula consists of the study of the rock formations on the Iberian Peninsula, which includes Spain, Portugal, Andorra, and Gibraltar. The peninsula contains rocks from every age from Ediacaran to Recent, and almost… …   Wikipedia

• Carpathian Mountains — /kahr pay thee euhn/ a mountain range in central Europe, extending from N Slovakia to central Rumania. Highest peak, Gerlachovka, 8737 ft. (2663 m). Also called Carpathians. * * * Mountain system, eastern Europe. It extends along the Slovakia… …   Universalium

• metamorphic rock — Any of a class of rocks that result from the alteration of preexisting rocks in response to changing geological conditions, including variations in temperature, pressure, and mechanical stress. The preexisting rocks may be igneous, sedimentary,… …   Universalium

• 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

• Massif Central (geology) — The Massif Central forms together with the Armorican Massif (Brittany and Normandy) one of the two big basement massifs in France. Its geological evolution started in the late Neoproterozoic and continues to this day. It has been shaped mainly by …   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

• Matterhorn — Monte Cervino redirects here. For other uses, see Cervino (disambiguation). For other uses, see Matterhorn (disambiguation). Matterhorn Monte Cervino T …   Wikipedia

• Geology of the Alps — The Alps form a part of a Tertiary orogenic belt of mountain chains, called the Alpide belt, that stretches through southern Europe and Asia from the Atlantic all the way to the Himalayas. This belt of mountain chains was formed during the Alpine …   Wikipedia

• Alps — /alps/, n. (used with a pl. v.) a mountain range in S Europe, extending from France through Switzerland and Italy into Austria, Slovenia, and Croatia. Highest peak, Mont Blanc, 15,781 ft. (4810 m). * * * I Mountain system, south central Europe.… …   Universalium

• Ressource hydrique — L eau, quand elle est rare, gaspillée, polluée ou inaccessible est source de tensions voire de conflits identifiés par l ONU (ici le Jourdain au Proche Orient) …   Wikipédia en Français