Figure 3: Age model construction.
From: Development of Middle Stone Age innovation linked to rapid climate change
(a) Graphical correlation of G. ruber δ18O record of CD154-17-17K (red) to the EPICA Dome C deuterium record (purple) (EPICA) on speleothem-timescale of ref. 24. Age control points as dots, red dots are based on radiocarbon dates and blue dots are based on the tuning of the foraminiferal δ18O record. (b) δ18O splice from Chinese speleothems (green) (Hulu and Sanbao Cave)20,48. (c) Fe/K ratio of CD154-17-17K on the initial age model. (d) Fe/Ca ratio of CD154-17-17K on the initial age model. Stippled lines show the fine-tuning of the initial age model through graphical correlation of Fe/K ratio of CD154-17-17K to δ18O splice from Chinese speleothems (Hulu and Sanbao Cave).
