C14 Radiocarbon Dating - Sample - GU-3250

Shell from a layer in a shell midden. PROBLEM: As of 2009, the calibration is uncertain because the marine effect varies (Ascough PhD) and it is not safe simply to correct the age by 405 C14 years. CHECK NEEDED to see if d13C value really positive or '-' simply not entered by me.

Canmore ID 48199

Map Number NS98SE

Site type Shell Midden (Period Unassigned), Unidentified Pottery (Neolithic)

Site number 72

NGR 295800 680000

Council 240

County 32

Parish BO'NESS AND CARRIDEN

Lab Analysis ID GU-3250

Material Dated shell (Null)

Researcher Sloan 1993

Sponsor Historic Scotland

Uncalibrated date bp +/- error 4490 bp +/-50

Uncalibrated date ad/bc +/- error 2540 bc +/-50

Delta 1.9

Completed by Scottish Universities Environmental Research Centre

Calibration program used OxCal 3.10