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the Archaean

См. также в других словарях:

  • Archaean — /aˈkiən/ (say ah keeuhn) Geology –noun 1. the aeon extending from 3800–2500 million years ago or the series of predominantly igneous and metamorphic rocks formed then. 2. Obsolete the span of geological time before the Proterozoic, including the… …  

  • Archaean — 1. adjective of, or relating to the geologic eon from about 3,800 to 2,500 million years ago; comprises the Eoarchean, Paleoarchean, Mesoarchean and Neoarchean eras; marked by an atmosphere with little oxygen, the formation of the first… …   Wiktionary

  • Archaean — Ar*ch[ae] an, n. (Geol.) The earliest period in geological period, extending up to the Lower Silurian. It includes an Azoic age, previous to the appearance of life, and an Eozoic age, including the earliest forms of life. [1913 Webster] Note:… …   The Collaborative International Dictionary of English

  • Archaean — Ar*ch[ae] an, a. [Gr. archai^os ancient, fr. archh beginning.] Ancient; pertaining to the earliest period in geological history. [1913 Webster] …   The Collaborative International Dictionary of English

  • Archaean — (adj.) of the earliest geological age, 1872, from Gk. arkhaios ancient, from arkhe beginning (see ARCHON (Cf. archon)) …   Etymology dictionary

  • The Great Story — The Great Story, or Epic of Evolution refer to mythopoetic language used by a social movement (or meta religious movement) that tells the history of the Universe in ways that are simultaneously scientific and sacred. It is an articulation of the… …   Wikipedia

  • Geography of the United Kingdom — The United Kingdom of Great Britain and Northern Ireland, or UK, is in Western Europe. It comprises the island of Great Britain (England, Scotland and Wales) and the northeastern one sixth of the island of Ireland (Northern Ireland), together… …   Wikipedia

  • archaean — adj. (Geology) of or pertaining to the earliest known forms of rocks; of or belonging to the earlier of the two divisions of Precambrian time …   English contemporary dictionary

  • Archaean — [α: ki:ən] (US Archean) adjective Geology relating to or denoting the earlier part of the Precambrian aeon (before about 2,500 million years ago), in which there was no life on the earth. Origin C19: from Gk arkhaios ancient + an …   English new terms dictionary

  • archaean — adj. & n. (US Archean) adj. of or relating to the earlier part of the Precambrian era. n. this time. Etymology: Gk arkhaios ancient f. arkhe beginning …   Useful english dictionary

  • History of the Earth — For the history of modern humans, see History of the world. Geological time put in a diagram called a geological clock, showing the relative lengths of the eons of the Earth s history The history of the Earth describes the most important events… …   Wikipedia

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