Isotope dating

The constant half-life of a nuclide is used to determine the ages of archaeological artifacts. In isotopic dating, we measure the activity of the radioactive isotopes that they contain. Isotopes used for dating objects include uranium-238, potassium-40, and tritium. However, the most important example is radiocarbon dating, which uses the decay of carbon-14, for which the half-life is 5730 a. [Pg.832]

Summary of Isotope Dating Techniques and Half-Life... [Pg.124]

Fig. 2. U/Pb isotopic dating of different generations of uranium oxides from the Millennium (upper part) and Eagle Point (lower part) deposits.

CuNEY, M., Chabiron, a., Kister, P., Golubev, V., Deloule, E. 2002. Chemical versus ion microprobe isotopic dating (Cameca IMS 3f) of the Shea Creek unconformity type uranium deposit (West Athabasca, Saskatchewan, Canada). Program and Abstracts, 27,... [Pg.456]

The majority of 8 S-values of sulfides fall between -3 and l%c and of sulfates between 8 and 15%c (Field and Gustafson 1976 Shelton and Rye 1982 Rye 2005). Sulfate-sulfide isotope date suggest a general approach to isotope equilibrium. [Pg.132]

Morse JW (1983) The kinetics of caldum carbonate dissolution and precipitation. Rev Mineral 11 227-264 Muller W, Aerden D, Halliday AN (2000) Isotopic dating of strain fringe increments Duration and rates of deformation in shear zones. Science 288 2195-2198... [Pg.116]

Most natural diamonds are dark or flawed. Especially puzzling are red and brown hues. Even the colorless crystals, when sectioned and examined by fluorescence, etching, and other techniques, reveal many layers of growth. Isotopic dating methods indicate that most diamonds are several thousand million years old. [Pg.332]

A completely different approach to the question of groundwater age is taken in the isotopic groundwater dating methods, using tritium, 14C, 36C1, and 4H (sections 10.4, 11.4, 12.2, and 14.5). The short-range isotopic dating... [Pg.30]

Routine collection of the auxiliary data needed for proper interpretation of the noble gas temperatures and isotopic dating... [Pg.329]

Mazor, E. and Nativ R., (1994) Stagnant groundwaters stored in isolated aquifers implications related to hydraulic calculations and isotopic dating—a reply to a comment by T. Torgersen. J. of Hydrology, 154, 409-418. [Pg.445]

Figure 10.2 The timing of events early in the Solar System based on isotopic dating and numerical models. Data from Kleine el ol. 2002, Halliday 2004, Kleine et al. 2005, Nimmo Kleine 2007, Scott 2007, Touboul et al. 2007, 2008.

In Chapter 16, Harbottle and Heino address the particular application of carbon isotopic dating to textile fibers. The discussion of the accelerator mass spectrometric (AMS) technique, which allows the accurate measurements of isotopic ratios in very small amounts of carbon, shows why this technique has had such an important impact on the field. Chapter 16 summarizes the progress in this very important methodology that remains the most accurate absolute measure of the ages of artifacts. [Pg.20]

Isotope Dating. Carbon-14 and the other isotope dating methods rely on our understanding of the pertinent nuclear decay processes. If the isotope in the particular artifact has a quantitatively well established decay mechanism, the sample can, in principle, be dated. This statement... [Pg.9]

For discussion on further additional dating techniques the interested reader may consult references on dendrochronology (28,29,31,59, 60, 79), tritium dating (38, 80), and oxygen isotope dating (59, 81,82). [Pg.14]

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