stratigraphic hiatus

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• Lias Group — The Lias Group or Lias is a lithostratigraphic unit (a sequence of rock strata) found in a large area of western Europe, including the British Isles, the North Sea, the low countries and the north of Germany. It consists of marine limestones,… …   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

• Maastrichtian — System Series Stage Age (Ma) Paleogene Paleocene Danian younger Cretaceous Upper …   Wikipedia

• Concretion — For other uses, see enterolith and nodule (geology). Septaria redirects here. For the genus of gastropods, see Septaria (gastropod). Concretions on Bowling Ball Beach (Mendocino County, California) weather out of steeply tilted Cenozoic mudstone… …   Wikipedia

• Kathleen Kenyon — Born January 5, 1906(1906 01 05) London …   Wikipedia

• Cyclostratigraphie — Sommaire 1 Les cyclicités recherchées 1.1 Cycles climatiques 1.1.1 Excentricité 1.1.2 Obliquité …   Wikipédia en Français

• Permian Period — Interval of geologic time, 290–248 million years ago. The last of the six periods of the Paleozoic Era, it follows the Carboniferous Period. During the Permian, the continents joined to form a single supercontinent, Pangea. Hot, dry conditions… …   Universalium

• Lithostratigraphy — is a sub dicipline of stratigraphy, the geological science associated with the study of strata or rock layers. Major focuses include geochronology, comparative geology, and petrology. In general a stratum will be primarily igneous or sedimentary… …   Wikipedia

• Sarir field — Infobox Oil field name = Sarir Field country = Libya coordinates = coord|28.22|N|19.13|E|region:LY type:landmark locblock = Sirte Basin, Concession 65 offonshore = Onshore operators = flagicon|Libya Arabian Gulf Oil Company partners =… …   Wikipedia

• Dendrochronology — Drill for dendrochronology sampling and growth ring counting Dendrochronology or tree ring dating is the scientific method of dating based on the analysis of patterns of tree rings. Dendrochronology can date the time at which tree rings were… …   Wikipedia

• Lacuna — Generally, a lacuna is a gap. The term may refer to: * Lacuna (manuscripts), a missing section of text * Lacuna (music), an extended silence in a piece of music * Lacuna (linguistics), a lexical gap in a language * Lacuna (law) is the lack of law …   Wikipedia