- iron formation
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• железистый кварцит• железообразование
English-Russian dictionary of geology. 2011.
iron formation
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Banded iron formation — Banded iron formations (also known as banded ironstone formations or BIFs) are a distinctive type of rock often found in primordial (Precambrian) sedimentary rocks. The structures consist of repeated thin layers of iron oxides, either magnetite… … Wikipedia
Banded Iron Formation — Bändereisenerz aus Nordamerika, 2,1 Milliarden Jahre alt Bändereisenerz von Upper Michigan, U.S.A. Ein Bändererz ist ein eisenhaltiges, marines … Deutsch Wikipedia
Iron ore — Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in colour from dark grey, bright yellow, deep purple, to rusty red. The iron itself is usually found in the … Wikipedia
banded-iron formation — ▪ geology chemically precipitated sediment, typically thin bedded or laminated, consisting of 15 percent or more iron of sedimentary origin and layers of chert, chalcedony, jasper, or quartz. Such formations occur on all the continents and… … Universalium
branded iron formation — noun a formation found in sedimentary rocks dating from before the Cambrian period, characterised by alternating thin layers of fine grained quartz, iron oxides, carbonate materials, and chert; found in the Hamersley Range. Abbrev.: BIF …
Iron — Fe redirects here. For other uses, see Fe (disambiguation). This article is about the chemical element. For other uses, see Iron (disambiguation). manganese … Wikipedia
Formation (stratigraphy) — A formation or geological formation is the fundamental unit of lithostratigraphy. A formation consists of a certain number of rock strata that have a comparable lithology, facies or other similar properties. Formations are not defined on the… … Wikipedia
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Iron(III) oxide — Iron(III) oxide … Wikipedia
