|Summary of C14 dates Wedigs 2012/3|
|Site||Context||Radiocarbon age BP||Radiocarbon age BC/AD||Material|
|Loch Raa||1.3||2374 +/-27||424 BC||Hazel|
|1.5||3207 +/-29||1257 BC||Hazel|
|Achnahaird||2.2||2345 +/- 29||395 BC||Alder|
|Achtercairn 1||1.3||2163 +/- 27||213 BC||Birch|
|1.4||2204+/- 29||254 BC||Birch|
|Achtercairn 2||1.11||2676 +/- 29||726 BC||Birch|
|3||313+/-30||1637 BC||Peat/humic acid dated|
|Achtercairn 3||4.3||4719+/-30||2769 BC||Alder|
|Srathain 1||1.2||2479 +/-27||529 BC||Birch|
|Rhue||1.3||2462 +/- 29||512 BC||Birch|
|2.3||1675 +/- 29||275 AD||Birch|
The above table shows the Radiocarbon results as analysed by SUERC.
Contexts beginning with 1 are central trenches, and those beginning with 2 are trenches across the wall, the sample being taken from the inside of the wall.
- The dates refer to the latest and earliest of the three hearths uncovered.
- The late date is contemporaneous with the date from Achnahaird, and is Early Iron Age.
- The earliest is Mid Bronze Age
- The date is contemporaneous with the later date from Loch Raa, Early Iron Age.
- The dates are from the top and bottom of the intensely burned reddish soil layer. They are not significantly different and are Early Iron Age.
- The date in Trench 1 indicates Late Bronze Age activity.
- The date in Trench 4 (a neighbouring circular structure) shows that much earlier activity was taking place, late Neolithic/Early Bronze Age.
- The earlier date taken from the hearth area shows that activity was taking place in Late Neolithic.
- The later date taken from under the wall shows Middle Bronze Age activity, before the wall was in place.
- This seemed to be a recessed platform with no wall structure; the date indicates Late Bronze Age/Early Iron Age activity there. The date is contemporaneous with the central trench date from Rhue.
- The date from the central trench is contemporaneous with the Srathain date.
- The date from the wall trench is Later Iron Age.