C14 Radiocarbon Dating - Sample - AA-51352

Peat humin (CAERL TWO 67-65 cm) from the highest sediment unaffected by ditch infilling with estuarine-marine sediment in the outer defensive ditch of the Old Castle.

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-51352

Material Dated Peat (n.i.)

Sponsor HS

Uncalibrated date bp +/- error 1130 bp +/-45

Uncalibrated date ad/bc +/- error ad 820 +/-45

Delta -29.2

Calibration program used No

Calibration curve used No