DNA found in sediment reveals that ancient artificial islands may have been high-status homes
; Lough Yoan North). This complicates correlation of crannog construction with any potential stimuli—either societal or environmental. There is also frequently a spread in the AMS radiocarbon dates, including reversals , which means that age-depth model development must be undertaken with care. The causes of this are shown schematically in
and relate to the conditions of construction, reconstruction and, critically, the modes of erosion during crannog use and/or post-abandonment.Modelled age-depth from Lough Yoan North and South and White Loch of Myrton. Where boundaries are present in the model, the sections between each are highlighted by different colours. Boundaries are inserted where there is a stratigraphic change, or where there is reason to believe there could be a hiatus. Defaults are selected using OxCal v4.4 .
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