C14 Radiocarbon Dating - Sample - AA-51355

Peat humin (CAERL SIX) from a naturally-accumulating peat directly dating the commencement of peat formation across the former marine surface after a land reclamation sea-wall was constructed to exclude coastal floods seaward of this surface between Caerlaverock and Saltcote.

Canmore ID 66101

Map Number NY06NW

Site type Castle (Medieval), Earthwork(S) (Period Unassigned)

Site number 7

NGR 302706 565451

Council 170

County 10

Parish CAERLAVEROCK

Lab Analysis ID AA-51355

Material Dated Peat (n.i.)

Sponsor HS

Uncalibrated date bp +/- error 145 bp +/-45

Uncalibrated date ad/bc +/- error ad 1805 +/-45

Delta -29.5

Calibration program used No

Calibration curve used No