C14 Radiocarbon Dating - Sample - GU-1949

Charred kelp within a stone-lined box (C 277 SNO.128 context 277) within Structure 2a (phase IX internal) deposit. PROBLEM As of 2009, the calibration is uncertain because the marine effect varies (Ascough PhD).

Canmore ID 2822

Map Number HY44SE

Site type Midden (Viking) - (Norse), Settlement (Viking) - (Norse)

Site number 5

NGR 345460 1043130

Council 330

County 22

Parish WESTRAY

Lab Analysis ID GU-1949

Material Dated charred kelp (kelp)

Sponsor HS

Uncalibrated date bp +/- error 1010 bp +/-50

Uncalibrated date ad/bc +/- error ad 940 +/-50

Delta -16.2

Calibration program used No

Calibration curve used No