Figure 4 | Scientific Reports

Figure 4

From: Four millennia of dairy surplus and deposition revealed through compound-specific stable isotope analysis and radiocarbon dating of Irish bog butters 

Figure 4

δ13C values of methylated individual fatty acids (C16:0 and C18:0) from sampled Irish bog butters. (a) δ13C values plotted against reference ellipses (1δ) derived from modern UK animal fats corrected for the contribution of post-industrial carbon by the addition of 1.2‰58. (b): the same data with Δδ13C values (=δ13C18:0 − δ13C16:0) plotted against δ13C16:0 values. Ranges of Δδ13C values are based on a global database comprising modern reference animal fats from the UK, Africa, Kazakhstan, Switzerland and the Near East.

Back to article page