C14 Radiocarbon Dating - Sample - SUERC-2423

A charred barley grain (Sample 30891) from an ashy floor surface 3682 in Structure 12, a middle Iron Age roundhouse. The floor was sealed by floor surface 3653 in the centre of the structure. It overlay further floor surfaces including 3708. The spread of ash from the hearth was subsequently incorporated into the floor, with the accidental charring of the grain and its incorporation into the floor surface occurring soon afterwards.

Canmore ID 556

Map Number HU31SE

Site type Broch (Iron Age), Settlement (Period Unassigned)

Site number 21

NGR 438980 1110650

Council 360

County 29

Parish DUNROSSNESS

Lab Analysis ID SUERC-2423

Material Dated Charred grain (hordeum spp)

Researcher Nicholson, R

Sponsor Historic Scotland

Uncalibrated date bp +/- error 2010 bp +/-35

Uncalibrated date ad/bc +/- error 60 bc +/-35

Delta -23.4

Completed by Scottish Universities Environmental Research Centre

Calibration program used OxCal 3.10