Radioactivity dating

Radioactive dating is most valuable in estimating the age of materials that predate human records, such as the Earth itself Calculating the age of a sample from the amounts of its radioactive nuclides and their decay products... [Pg.1603]

This is a question about radioactive dating. Convert the isotopic ratio of the radioactive nuciide and its product into an amount ratio, and then use Equation. ... [Pg.1605]

The age estimate for the moon is similar to age estimates for the Earth based on several methods of radioactive dating. Thus, this is a sensible result. [Pg.1605]

Rosholt NJ (1967) Open system model for uranium-series dating of Pleistocene samples. In Radioactive Dating and Methods of low-level Counting. 1. A. E. A. Proc Ser Publ, SM-87/50, p 299-311 Rosholt JN, Antal PS (1962) Evaluation of the Pa /U-Th °/U method for dating Pleistocene carbonate rocks. US Geol Survey Prof Paper 450-E 108-lll... [Pg.404]

During the past several years exciting advances have taken place in radioactive dating techniques—advances which have made it possible to determine unusually small isotope ratios and to determine the radioisotopic composition of individual chemical fractions and particle size fractions of extremely small samples. [Pg.163]

Olsson, I., Stenberg, A., Radioactive Dating and Methods of Low Level Counting, IAEA Symposium, Monaco, March 2-10, 1967, 69-78. [Pg.298]

It is necessary to measure 14C in smaller ice samples to date specimens from the core itself. The uncertainties in the calculated age-depth relation increase with depth because it is difficult to measure 14C at large depths. Another radioactive dating method is desirable for the bottom half of the core 222Rn, can be extracted and counted by essentially the same procedure as 14C, and when combined with the measurement of 230Th, is a promising dating method for the core bottom. [Pg.320]

Goldberg, E. D., Geochronology with 2l0Pb, In Radioactive dating, International Atomic Energy Agency, Vienna, 121-131 (1963). [Pg.384]

Haynes, C. V., Bone Organic Matter and Radiocarbon Dating, In Radioactive Dating and Methods of Low-Level Counting, pp. 163-168, Vienna, International Atomic Energy Agency, 1967. [Pg.466]

Rutherford shows age of Earth is about a Gyr or more from radioactive dating. [Pg.400]

Hirschmann M. (1991). Thermodynamics of multicomponent olivines and the solution properties of (Ni,Mg,Ee)2Si04 and (Ca,Mg,Fe)2Si04 olivines. Amer. Mineral, 76 1232-1248 Hirt B., Herr W, and Hoffmeister W. (1963). Age determinations by the rhenium-osmium method. In Radioactive Dating, International Atomic Energy Agency, Vienna. [Pg.836]

Radioactive dating is the process scientists use to date Scimples based on the amount of radioisotope remaining. The most famous form of radioactive dating is Ccirbon-14 dating, which has been used to date human remains and other organic artifacts. However, radioisotopes have also been used to date the Earth, the solar system, and even the universe. [Pg.276]

E.J. Zeller, P.W. Levy and P.L. Mattern, Proc. Symp. Radioactive Dating and Method of Low Level Counting , IAEA, 1967, 53. [Pg.28]

Bien, G., Suess, H., Radioactive Dating Methods Low Level Counting,... [Pg.425]

Radioactive dating -use of radioisotopes [RADIOISOTOPES] (Vol 20) -use of rubidium compounds [RUBIDIUM AND RUBIDIUM COMPOUNDS] (Vol 21)... [Pg.838]

In any use of radioactive dating or age determining processes, a basic assumption is. in general, that the concentration of the radioactive element is changed during the life of the sample only by its natural decay process, and that the accuracy of the determination depends primarily, therefore, upon the accuracy with which the half-life of that radionuclide is known. [Pg.1413]

The age of an art object can provide a valuable clue to whether it is real or a forgery. Because the half-life for a specific isotope is constant, half-life can be used to find the age of an object. The isotope put to use for radioactive dating is carbon-14. The half-life of carbon-14 is 5,730 years. The amount of carbon-14 in our atmosphere remains fairly constant. When an object such as a plant is alive, it absorbs C02. The carbon atoms in the C02 are made of a specific ratio of carbon-14 atoms to carbon-12 atoms. The carbon-14 atoms decay by emission of beta particles ... [Pg.343]

Sometimes a thorough examination of the artwork can determine authenticity. Forgers may use colors not available during the artist s life. Brushwork, themes, and techniques can be assessed. Unusual materials make a work suspect. Also, the usual methods can be applied to detect a forgery fluorescence, spectroscopy, X-rays, neutron activation analysis, radioactive dating and, more recently, digital analysis. [Pg.348]

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