stratigraphic scale

См. также в других словарях:

• Stratigraphic Cycles — refer to the transgressive and regressive sequences bounded by unconformities in the stratagraphic record on the cratons. These cycles represent a large scale eustasy cycle since the Cambrian period with further sub divisions of those units.… …   Wikipedia

• Geologic time scale — This clock representation shows some of the major units of geological time and definitive events of Earth history. The Hadean eon represents the time before fossil record of life on Earth; its upper boundary is now regarded as 4.0 Ga.[1] Other… …   Wikipedia

• Global Standard Stratigraphic Age — In the Stratigraphy sub discipline of Geology, a Global Standard Stratigraphic Age, officially abbreviated GSSA, is a chronological reference point and criteria in the world s rock records used to define the boundaries (a internationally… …   Wikipedia

• stratigraphy — stratigrapher, stratigraphist, n. stratigraphic /strat i graf ik/, stratigraphical, adj. stratigraphically, adv. /streuh tig reuh fee/, n. a branch of geology dealing with the classification, nomenclature, correlation, and interpretation of… …   Universalium

• Cambrian — For other uses, see Cambrian (disambiguation). Cambrian Period 542–488.3 million years ago …   Wikipedia

• 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

• Tertiary Period — Interval of geologic time, 65–1. 8 million years ago. It constitutes the first of the two periods of the Cenozoic Era, the second being the Quaternary. The Tertiary has five subdivisions: (from oldest to youngest) the Paleocene, Eocene, Oligocene …   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

• Year — A year (from Old English gēar) is the orbital period of the Earth moving around the Sun. For an observer on Earth, this corresponds to the period it takes the Sun to complete one course throughout the zodiac along the ecliptic. In astronomy, the… …   Wikipedia

• sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …   Universalium