C14 Radiocarbon Dating - Sample - SRR-1458b

Patella shells in 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 37820

Map Number NR38NE

Site type Midden (Mesolithic)

Site number 8

NGR 135820 687970

Council 130

County 03

Parish COLONSAY AND ORONSAY

Lab Analysis ID SRR-1458b

Material Dated shell (Patella spp)

Uncalibrated date bp +/- error 5890 bp +/-70

Uncalibrated date ad/bc +/- error 3940 bc +/-70

Delta 0.9

Calibration program used No

Calibration curve used No