ferruginous crust

См. также в других словарях:

• 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

• Slave craton — which is one of the oldest dated rock units on Earth at 4.03 Ga. The crust of the Slave craton is thought to have amalgamated during a 2.69 Ga collision between a proto Slave western basement complex, known as the Central Slave Basement Complex,… …   Wikipedia

• 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

• duricrust — /door i krust , dyoor /, n. a hard crust that forms on or in soil in semiarid climates owing to cementation of soil particles. Cf. caliche, hardpan (defs. 1, 2). [ < L dur(us) hard + I + CRUST] * * * ▪ geology Introduction       surface or near… …   Universalium

• Yilgarn Craton — The Yilgarn Craton is a large craton which constitutes the bulk of the Western Australian land mass. It is bounded by a mixture of sedimentary basins and Proterozoic fold and thrust belts. Zircon grains in the Jack Hills, Narryer Gneiss Terrane… …   Wikipedia

• Caja del Rio — Volcanic plateau Country United States State Ne …   Wikipedia

• brass — Synonyms and related words: ADC, CO, Establishment, German band, OD, Philharmonic, VIP, aide, aide de camp, alpenhorn, alphorn, althorn, alto horn, arch, aristocracy, aureate, ballad horn, band, baritone, baron, barons, barrow, bass horn, big… …   Moby Thesaurus

• Lung cancer — Classification and external resources Cross section of a human lung. The white area in the upper lobe is cancer; the black areas are discoloration due to smoking. ICD 10 C …   Wikipedia

• Glossary of botanical terms — Many of the terms used in Wikipedia glossaries (often most) are already defined and explained within Wikipedia itself. However, lists like the following indicate where new articles need to be written and are also useful for looking up and… …   Wikipedia

• Mali — Malian, n., adj. /mah lee/, n. Republic of, a republic in W Africa: formerly a territory of France; gained independence 1960. 9,945,383; 463,500 sq. mi. (120,000 sq. km). Cap.: Bamako. Formerly, French Sudan. * * * Mali Introduction Mali… …   Universalium

• perched rock — also called  Mushroom Rock, or Pedestal Rock,         boulder balanced on a pinnacle rock, another boulder, or in some other precarious position. Some perched rocks form in place, as where rainwash (and in some cases wind) has removed fine… …   Universalium