C14 Radiocarbon Dating - Sample - UB-2061

Oak charcoal from fort rampart timber AC/E 023/2. This is probably from a massive oak and may be too old.

Canmore ID 43376

Map Number NS47SW

Site type Castle (Medieval), Fort (Early Medieval)(Possible), Hospital (First World War)(Possible)

Site number 5

NGR 239988 674485

Council 160

County 11

Parish DUMBARTON

Lab Analysis ID UB-2061

Material Dated charcoal (quercus spp)

Researcher Alcock 1976

Sponsor Historic Scotland

Uncalibrated date bp +/- error 1410 bp +/-30

Uncalibrated date ad/bc +/- error ad 540 +/-30

Delta -24.1

Completed by Belfast, Northern Ireland

Calibration program used OxCal 3.10