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Among them is the presence of non-radiogenic Pb of unknown composition, often referred to as common or initial Pb.

The great potential of the combination of nuclear analysis and archaeological research is demonstrated and this publication will be of interest to researchers in pre-Columbian South American ceramics as well as scientists worldwide involved in interdisciplinary research using nuclear analytical methods applied in the field of archaeology.Subsequently new crustal rocks formed via partial melts from the mantle.U decay in those rocks added daughter Pb isotopes to the common or initial Pb isotopes in them, inherited from the rock’s sources.Many isotopes have been studied, probing a wide range of time scales.C and counting the amount of each) allows one to date the death of the once-living things.

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Zircon does incorporate initial Pb when it crystallizes. It cannot be proven that the Pb in apparently cogenetic U- or Th-free minerals is only initial Pb, and that it is identical to the initial Pb in the mineral being dated.

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