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. 2018 Sep 27;9:3959. doi: 10.1038/s41467-018-06252-8

Fig. 3.

Fig. 3

X-ray fluorescence records of calcium (Ca) concentrations (ppm) in 33-GC08 and GS14-190-01PC against respective core depths (cm). AMS 14C (calibrated) datings for each core are shown (see Table 1). Numbers 1–5 indicate correlation tie points (Table 2) between the cores to establish a common depth scale