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Geologic processes

См. также в других словарях:

  • Geologic Pediment — A pediment is a gently inclined erosional surface carved into bedrock. It is thinly covered with Fluvial gravel that has developed at the foot of mountains. It develops when running water erodes most of the mass of the mountain. It is typically a …   Wikipedia

  • Lunar geologic timescale — The lunar geologic timescale (or selenologic timescale) divides the history of Earth s moon into five generally recognized geologic periods: the Copernican, Eratosthenian, Imbrian (upper and lower), Nectarian, and Pre Nectarian. The boundaries of …   Wikipedia

  • Earth, geologic history of — Introduction       evolution of the continents, oceans, atmosphere, and biosphere. The layers of rock at the Earth s surface contain evidence of the evolutionary processes undergone by these components of the terrestrial environment during the… …   Universalium

  • Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

  • geology — /jee ol euh jee/, n., pl. geologies. 1. the science that deals with the dynamics and physical history of the earth, the rocks of which it is composed, and the physical, chemical, and biological changes that the earth has undergone or is… …   Universalium

  • geochronology — geochronologic /jee oh kron l oj ik/, geochronological, adj. geochronologist, n. /jee oh kreuh nol euh jee/, n. the chronology of the earth, as based on both absolute and relative methods of age determination. [1890 95; GEO + CHRONOLOGY] * * *… …   Universalium

  • dating — I In geology and archaeology, the process of determining an object s or event s place within a chronological scheme. Scientists may use either relative dating, in which items are sequenced on the basis of stratigraphic clues (see stratigraphy) or …   Universalium

  • earth — /errth/, n. 1. (often cap.) the planet third in order from the sun, having an equatorial diameter of 7926 mi. (12,755 km) and a polar diameter of 7900 mi. (12,714 km), a mean distance from the sun of 92.9 million mi. (149.6 million km), and a… …   Universalium

  • Geology of Mars — Mars   Mars as seen by the Hubble Space Telescope Designations …   Wikipedia

  • quaternary — /kwot euhr ner ee, kweuh terr neuh ree/, adj., n., pl. quaternaries. adj. 1. consisting of four. 2. arranged in fours. 3. (cap.) Geol. noting or pertaining to the present period of earth history, forming the latter part of the Cenozoic Era,… …   Universalium

  • uniformitarianism — [yo͞on΄ə fôrm΄ə ter′ē əniz΄əm] n. the doctrine that all geologic changes may be explained by existing physical and chemical processes, as erosion, deposition, volcanic action, etc., that have operated in essentially the same way throughout… …   Universalium

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