C14 Radiocarbon Dating - Sample - UB-3671

Marine shell from Trench 1 68 early occupation of Phase 1 settlement. See also UB-3667 (4190 +/- 29) from animal bone in the same context. 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

Canmore ID 1663

Map Number HY21NW

Site type Midden (Neolithic), Settlement (Neolithic)

Site number 12

NGR 323125 1018745

Council 330

County 22

Parish SANDWICK

Lab Analysis ID UB-3671

Material Dated shell (n.i.)

Uncalibrated date bp +/- error 4743 bp +/-22

Uncalibrated date ad/bc +/- error 2793 bc +/-22

Calibration program used No

Calibration curve used No