C14 Radiocarbon Dating - Sample - AA-24962

A single piece of birch charcoal from a layer of dark brown clay with charcoal thought to be the equivalent of layer 315 which contained abundant beaker sherds and seems to be associated with dilapidation of the chambered cairn. Ard marks became progressively more visible as this layer was removed. The charcoal may have been in the underlying layer and have been brought up by ard ploughing, or may have been introduced at the time of ploughing. See also AA-24960, AA-24961 and AA-24963

Canmore ID 4156

Map Number NB23SW

Site type Avenue (Neolithic), Chambered Cairn (Neolithic), Stone Circle (Neolithic) - (Bronze Age), Stone Row(S) (Neolithic) - (Bronze Age)

Site number 1

NGR 121300 933017

Council 410

County 26

Parish UIG

Lab Analysis ID AA-24962

Material Dated charcoal (betula)

Researcher Ashmore 1997

Sponsor Historic Scotland

Uncalibrated date bp +/- error 3555 bp +/-50

Uncalibrated date ad/bc +/- error 1605 bc +/-50

Delta -27.2

Completed by National Science Foundation Radiocarbon Facility University of Arizona, USA

Calibration program used OxCal 3.10