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sea-floor deposit

См. также в других словарях:

  • Deep sea mining — is a relatively new mineral retrieval process that takes place on the ocean floor. Ocean mining sites are usually around large areas of polymetallic nodules or active and extinct hydrothermal vents at about 1,400 3,700 meters below the ocean’s… …   Wikipedia

  • Dead Sea — For the Brian Keene book of the same name, see Dead Sea (novel). Dead Sea A view from the Israeli side looking across to Jordan Coord …   Wikipedia

  • mineral deposit — Introduction       aggregate of a mineral in an unusually high concentration.       About half of the known chemical elements (chemical element) possess some metallic (metal) properties. The term metal, however, is reserved for those chemical… …   Universalium

  • harbours and sea works — Introduction harbour also spelled  harbor        any part of a body of water and the manmade structures surrounding it that sufficiently shelters a vessel from wind, waves, and currents, enabling safe anchorage or the discharge and loading of… …   Universalium

  • DEAD SEA SCROLLS — DEAD SEA SCROLLS, the popular designation given to collections of manuscript material found in 1947 and the following years in various caves west of the Dead Sea, notably at qumran , Murabbaʿāt , Khirbat Mird, together with en gedi and masada .… …   Encyclopedia of Judaism

  • North Sea — an arm of the Atlantic between Great Britain and the European mainland. ab. 201,000 sq. mi. (520,600 sq. km); greatest depth, 1998 ft. (610 m). Formerly, German Ocean. * * * ancient Mare Germanicum Arm of the Atlantic Ocean. Extending south from… …   Universalium

  • Spawn (biology) — The spawn (eggs) of a clownfish. The black spots are the eyes developing. Spawn refers to the eggs and sperm released or deposited, usually into water, by aquatic animals. As a verb, spawn refers to the process of releasing the eggs and sperm,… …   Wikipedia

  • reproductive system, animal — Introduction       any of the organ systems by which animals reproduce.       The role of reproduction is to provide for the continued existence of a species; it is the process by which living organisms duplicate themselves. Animals compete with… …   Universalium

  • Ore genesis — The various theories of ore genesis explain how the various types of mineral deposits form within the Earth s crust. Ore genesis theories are very dependent on the mineral or commodity. Ore genesis theories generally involve three components:… …   Wikipedia

  • Hydrothermal vent — Marine habitats White smokers emitting liquid carbon dioxide at the Champagne vent, Northwest Eifuku volcano, Marianas Trench Marine National Monument Littoral zone …   Wikipedia

  • Atlantic Ocean — an ocean bounded by North America and South America in the Western Hemisphere and by Europe and Africa in the Eastern Hemisphere. ab. 31,530,000 sq. mi. (81,663,000 sq. km); with connecting seas ab. 41,000,000 sq. mi. (106,100,000 sq. km);… …   Universalium

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