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14 C AMS results
Sample Analysed Mass UtC ð13C 14C Age Calendar Age
Name Fraction (mg) Nr (p.mil) (BP) (cal BP)
Ense2_04_16 charcoal 2.060 13516 -26.2 2255 ± 37 2181-2239,
2303-2338
UtC Nr: laboratory number, reference to the analysis
ð13C: ratio of 13C 12C with respect to PDB reference; (if applicable) estimate indicated by e)
14 14 14 12 13 C age (BP):
C age (yr Before Present) from measured ratio of C to C, normalized to ð C = 25 p. mil)
Calendar age (cal BP): intervals (1?–probability) using the program Calib4 (Radiocarbon 35, 1993, 215-230) fot the
atmospheric environment (default), or – indicated by m: -for the marine environment with 402
years reservoir age;
conversion to cal AD/cal BC according to the relation cal AD = 1950 – cal BP or
cal BC = cal BP – 1950.
ADC ArcheoProjecten Rapport 413 Enschede, Usseler Es
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