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INTCAL98 radiocarbon age calibration, 24,000-0 cal BP.

Minze Stuiver, Paula J Reimer, Edouard Bard, J Warren Beck, G S Burr, Konrad A Hughen, Bernd Kromer, Gerry McCormac, Johannes van der Plicht, Marco Spurk

Abstract


The focus of this paper is the conversion of radiocarbon ages to calibrated (cal) ages for the interval 24,000-0 cal BP (Before Present, 0 cal BP = AD 1950), based upon a sample set of dendrochronologically dated tree rings, uranium-thorium dated corals, and varve-counted marine sediment. The 14C age-cal age information, produced by many laboratories, is converted to 14C profiles and calibration curves, for the atmosphere as well as the oceans. We discuss offsets in measured 14C ages and the errors therein, regional 14C age differences, tree-coral 14C age comparisons and the time dependence of marine reservoir ages, and evaluate decadal vs. single-year 14C results. Changes in oceanic deepwater circulation, especially for the 16,000-11,000 cal BP interval, are reflected in the Δ14C values of INTCAL98.

Keywords


INTCAL98 Program;programs;ocean circulation;Th U;Anthozoa;Coelenterata;calibration;marine sediments;errors;atmosphere;tree rings;Pleistocene;sediments;Cenozoic;Quaternary;C 14;carbon;dates;isotopes;radioactive isotopes;Invertebrata;absolute age

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