Dating
Three samples from the profile, at 494, 492 and 486 cm below NAP, were selected for radiocarbon dating. A sample containing seeds from non-aquatic plants was chosen to prevent contamination with younger root material and to avoid reservoir effects. Due to lack of material only one of the three samples (494 cm below NAP) was composed of seeds (total 0,596 mg dry weight). The other two were bulk peat samples. Results are shown in table 2.
|
cm –NAP |
14C BP |
Laboratory number |
material |
95,4% (2σ) age intervals after calibration |
|
486 |
5005 ± 30 |
GrA-39737 |
bulk |
3812 - 3703 cal BC |
|
3939 - 3859 cal BC | ||||
|
492 |
5045 ± 30 |
GrA-39696 |
bulk |
3952 - 3768 cal BC |
|
494 |
5010 ± 70 |
GrA-39695 |
seeds |
3685 - 3660 cal BC |
|
3954 - 3690 cal BC | ||||
|
Table 2 Radiocarbon dates of three samples with range in calendar years BP derived from Calib 5.0 ( Stuiver & Reimer 1993 ) using the INTCAL 08 calibration curve. | ||||