Fig. 4 | Journal of Paleolimnology

Fig. 4

From: Effects of climate change and industrialization on Lake Bolshoe Toko, eastern Siberia

Fig. 4

Geochemical properties of sediment core PG2203, showing total organic carbon (TOC), nitrogen (N), atomic TOC/N ratios, stable carbon isotope values (δ13C), and mercury concentrations (Hg) in parts per million. The red shaded area indicates the industrialization of the Northern Hemisphere, starting in the mid-nineteenth century as determined by 210Pb and 137Cs dating. Ages are given in common era next to core depths. Dashed lines indicate mean values for the whole sequence

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