uranium-lead method


uranium-lead method
Макаров: уран-свинцовый метод (в геохронологии)

Универсальный англо-русский словарь. . 2011.

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  • Uranium-lead dating — Uranium lead is one of the oldest and most refined radiometric dating schemes, with a routine age range of about 1 million years to over 4.5 billion years, and with routine precisions in the 0.1 1 percent range. [Parrish, Randall R.; Noble,… …   Wikipedia

  • uranium-lead dating — noun (geology) A method of determining the age in years of geological material, based on the known decay rate of uranium isotopes to lead isotopes • • • Main Entry: ↑uranium …   Useful english dictionary

  • Uranium — (pronEng|jʊˈreɪniəm) is a silvery gray metallic chemical element in the actinide series of the periodic table that has the symbol U and atomic number 92. It has 92 protons and 92 electrons, 6 of them valence electrons. It can have between 141 and …   Wikipedia

  • lead-210 dating — Method of dating that makes use of the ratio of the amount of the radioactive isotope lead 210 to that of the stable isotope lead 206. The method has been applied to the ores of uranium. Lead 210 dating is particularly useful for determining the… …   Universalium

  • Lead-lead dating — is a method for dating geological samples, normally based on whole rock samples of material such as granite. For most dating requirements it has been superseded by uranium lead dating (U Pb dating), but in certain specialized situations (such as… …   Wikipedia

  • Uranium in the environment — Uranium in the environment, this page is about the science of uranium in the environment and in animals (including humans). The legal and social issues associated with uranium are discussed elsewhere. This page is a subpage of actinides in the… …   Wikipedia

  • uranium-thorium-lead dating — or common lead dating Method of dating very old rocks by means of the amount of common lead they contain. Common lead is any lead from a rock or mineral that contains a large amount of lead and a small amount of the radioactive precursors of lead …   Universalium

  • Uranium-238 — Infobox isotope background =#fc6 text color = image caption = 10 gram sample alternate names = mass number =238 symbol =U num neutrons =146 num protons =92 abundance = 99.284% halflife = 4.46 billion years error halflife = decay product = Thorium …   Wikipedia

  • uranium — /yoo ray nee euhm/, n. Chem. a white, lustrous, radioactive, metallic element, occurring in pitchblende, and having compounds that are used in photography and in coloring glass. The 235 isotope is used in atomic and hydrogen bombs and as a fuel… …   Universalium

  • Lead glass — Swarovski flacon. Lead glass is a variety of glass in which lead replaces the calcium content of a typical potash glass.[1] Lead glass contains typically 18–40 weight% lead(II) oxide (PbO), while modern lead …   Wikipedia

  • lead — lead1 /leed/, v., led, leading, n., adj. v.t. 1. to go before or with to show the way; conduct or escort: to lead a group on a cross country hike. 2. to conduct by holding and guiding: to lead a horse by a rope. 3. to influence or induce; cause:… …   Universalium