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Browsing by Author "Visser, E"

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  • Vogel, JC; Fuls, A; Visser, E (Academy of Science of South Africa, 2002-09)
    The artificial radiocarbon produced by the thermonuclear bomb tests in the 1950s and 1960s significantly increased the level of C-14 in the environment. A detailed record of the subsequent changes in the C-14 concentration ...
  • Vogel, JC; Fuls, A; Visser, E (Bureau Scientific Publisher, 2001-03)
    High-precision radiocarbon dating of a millennium-old yellowwood tree from the Midlands of Natal shows that the tree-rings do, in general, record annual growth, but that both missing and false rings occur. At two places ...
  • Vogel, JC; Visser, E; Fuls, A (University of Arizona, 2001)
    Ostrich eggshell from archaeological sites remains largely free of more recent carbon contamination and as such is suitable material for radiocarbon dating. The carbonate fraction of the shell does, however, display an ...