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      Finding the coastal Mesolithic in southwest Britain: AMS dates and stable isotope results on human remains from Caldey Island, south Wales

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      Antiquity

      Cambridge University Press (CUP)

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          Abstract

          The implications of new evidence are presented for the generally high level of marine diet in the coastal Mesolithic populations of Wales. Within these generally high levels, some variations may point to seasonal movement. These data provide a strong contrast with the mainland terrestrial diet of early Neolithic populations in the same area.

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          Most cited references 22

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          INTCAL98 Radiocarbon Age Calibration, 24,000–0 cal BP

          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. The14C age–cal age information, produced by many laboratories, is converted to Δ14C profiles and calibration curves, for the atmosphere as well as the oceans. We discuss offsets in measuredl4C ages and the errors therein, regional14C age differences, tree–coral14C age comparisons and the time dependence of marine reservoir ages, and evaluate decadalvs. single-year14C results. Changes in oceanic deepwater circulation, especially for the 16,000–11,000 cal BP interval, are reflected in the Δ14C values of INTCAL98.
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            High-Precision Radiocarbon Age Calibration for Terrestrial and Marine Samples

            Single-year and decadal radiocarbon tree-ring ages are tabulated and discussed in terms of14C age calibration. The single-year data form the basis of a detailed14C age calibration curve for the cal ad 1510–1954 interval (“cal” denotes calibrated). The Seattle decadal data set (back to 11,617 cal BP, with 0 BP = ad 1950) is a component of the integrated decadal INTCAL9814C age curve (Stuiveret al.1998). Atmospheric14C ages can be transformed into14C ages of the global ocean using a carbon reservoir model. INTCAL9814C ages, used for these calculations, yield global ocean14C ages differing slightly from previously published ones (Stuiver and Braziunas 1993b). We include discussions of offsets, error multipliers, regional14C age differences and marine14C age response to oceanic and atmospheric forcing.
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              Stable-carbon isotope ratios as a measure of marine versus terrestrial protein in ancient diets.

              The stable-carbon isotope ratios for the flesh of marine and terrestrial animals from Canada's Pacific coast differ by 7.9 +/- 0.4 per mil, reflecting the approximately 7 per mil difference between oceanic and atmospheric carbon. This difference is passed on to human consumers. The carbon isotopic values (delta(13)C) for human collagen thus yield direct information on the relative amounts of marine and terrestrial foods in prehistoric diets.
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                Author and article information

                Journal
                applab
                Antiquity
                Antiquity
                Cambridge University Press (CUP)
                0003-598X
                1745-1744
                October 2002
                January 2015
                : 76
                : 294
                : 1011-1025
                Article
                10.1017/S0003598X00091821
                © 2002

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