- radiogenic lead
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радиогенный свинец
Англо-русский словарь терминов металлургии и сварки. 2011.
radiogenic lead
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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 For most dating requirements it has been superseded by uranium lead dating (U Pb dating), but in certain specialized situations (such as… … Wikipedia
radiogenic — /ray dee oh jen ik/, adj. 1. Physics. produced by radioactive decay: radiogenic lead; radiogenic heat. 2. having qualities or characteristics that broadcast well; suitable for presentation on the radio. [1925 30; RADIO + GENIC] * * * … Universalium
radiogenic — ra•di•o•gen•ic [[t]ˌreɪ di oʊˈdʒɛn ɪk[/t]] adj. phs produced by radioactive decay: radiogenic lead; radiogenic heat[/ex] • Etymology: 1925–30 … From formal English to slang
Lead — (pronEng|ˈlɛd) is a main group element with a symbol Pb ( la. plumbum). Lead has the atomic number 82. Lead is a soft, malleable poor metal, also considered to be one of the heavy metals. Lead has a bluish white color when freshly cut, but… … Wikipedia
Radiogenic — A radiogenic nuclide is one that is produced by a process of radioactive decay.Radiogenic nuclides (more commonly referred to as radiogenic isotopes ) form some of the most important tools in Geology. They are used in two principal ways:1) In… … 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
Isotopes of lead — Lead (Pb) has four stable isotopes 204Pb, 206Pb, 207Pb, 208Pb and one common radiogenic isotope 202Pb with a half life of 53,000 years. The standard atomic mass is 207.2(1) u. It is the heaviest discovered element to have a stable isotope. (The… … Wikipedia
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
thorianite — /thawr ee euh nuyt , thohr /, n. a rare mineral, mainly thoria, ThO2, but also containing uranium, cerium, and other rare earth metals, occurring in small, black, cubic crystals: notable for its radioactivity and used as a minor source of thorium … 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
Isotope-ratio mass spectrometry — Isotope ratio mass spectrometer with gas bench in foreground Acronym IRMS Classification mass spectrometry Other techniques … Wikipedia
