Following the launch of trove.scot in February 2025 we are now planning the retiral of some of our webservices. Canmore will be switched off on 24th June 2025. Information about the closure can be found on the HES website: Retiral of HES web services | Historic Environment Scotland
C14 Radiocarbon Dating - Index - Portknockie, Green Castle
| Lab Analysis ID | Material Dated | Uncalibrated date bp | Uncalibrated date bc/ad | Calibrated date |
|---|---|---|---|---|
| GU-1816 | charcoal (Null) |
1155 bp +/-50 | ad 795 +/-50 | cal AD 720 to 1000 |
| GU-1817 | charcoal (Null) |
1115 bp +/-50 | ad 835 +/-50 | cal AD 780 to 1020 |
| GU-1818 | charcoal (Null) |
2815 bp +/-55 | 865 bc +/-55 | 1130 to 830 cal BC |
| GU-1819 | charcoal (Null) |
2835 bp +/-105 | 885 bc +/-105 | 1400 to 800 cal BC |
| GU-1820 | charcoal (Null) |
1210 bp +/-85 | ad 740 +/-85 | cal AD 660 to 990 |
| GU-1821 | charcoal (Null) |
2650 bp +/-55 | 700 bc +/-55 | 930 to 560 cal BC |
| GU-1822 | charcoal (Null) |
1620 bp +/-115 | ad 330 +/-115 | cal AD 100 to 650 |
| GU-1833 | charcoal (Null) |
0 bp +/-0 | ad 1950 +/-0 | not calibrated |
| GU-2092 | charcoal (Null) |
1290 bp +/-50 | ad 660 +/-50 | cal AD 650 to 880 |
| GU-2093 | charcoal (Null) |
2250 bp +/-50 | 300 bc +/-50 | 400 to 200 cal BC |
| UB-2149 | charcoal (Null) |
1265 bp +/-40 | ad 685 +/-40 | cal AD 660 to 880 |
| UB-2150 | charcoal (Null) |
1210 bp +/-45 | ad 740 +/-45 | cal AD 680 to 960 |
