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1 cretaceous
Cre·ta·ceous[krɪˈteɪʃəs]the \Cretaceous period die Kreidezeit* * *[krI'teISəs]adjKreide-, kretazeisch (spec)* * *cretaceous [krıˈteıʃəs]A adj (adv cretaceously)1. kreidig, kreideartig oder -haltig, Kreide…Cretaceous formation → B;b) Kreidezeit f -
2 chalk
мел
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
chalk
A soft, pure, earthy, fine-textured, usually white to light gray or buff limestone of marine origin, consisting almost wholly (90-99%) of calcite, formed mainly by shallow-water accumulation of calcareous tests of floating microorganisms (chiefly foraminifers) and of comminuted remains of calcareous algae (such as cocoliths and rhabdoliths), set in a structureless matrix of very finely crystalline calcite. The rock is porous, somewhat friable, and only slightly coherent. It may include the remains of bottom-dwelling forms (e.g. ammonites, echinoderms, and pelecypods), and nodules of chert and pyrite. The best known and most widespread chalks are of Cretaceous age, such as those exposed in cliffs on both sides of the English Channel. (Source: BJGEO)
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Англо-русский словарь нормативно-технической терминологии > chalk
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Cretaceous acid — Cretacic Cre*tac ic [Webster 1913 Suppl. +PJC] {Cretaceous acid}, an old name for carbonic acid. {Cretaceous formation} (Geol.), the series of strata of various kinds, including beds of chalk, green sand, etc., formed in the Cretaceous period;… … The Collaborative International Dictionary of English
Cretaceous formation — Cretacic Cre*tac ic [Webster 1913 Suppl. +PJC] {Cretaceous acid}, an old name for carbonic acid. {Cretaceous formation} (Geol.), the series of strata of various kinds, including beds of chalk, green sand, etc., formed in the Cretaceous period;… … The Collaborative International Dictionary of English
Cretaceous period — Cretacic Cre*tac ic [Webster 1913 Suppl. +PJC] {Cretaceous acid}, an old name for carbonic acid. {Cretaceous formation} (Geol.), the series of strata of various kinds, including beds of chalk, green sand, etc., formed in the Cretaceous period;… … The Collaborative International Dictionary of English
