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. 2024 Jan 19;10(3):eadk2506. doi: 10.1126/sciadv.adk2506

Fig. 2. Compilation of qualitative oxygenation changes between the LGM and the Holocene from localized redox proxies.

Fig. 2.

(A) The upper ocean sites (water depth ≤ 1500 m) are denoted by solid circles, whereas the deep ocean sites (water depth > 1500 m) are represented by hollow squares. Lower, higher, and ambiguous changes in bottom water oxygenation during LGM compared to the Holocene are shown in green, blue, and gray symbols, respectively. Whenever there is an overlap, blue overlies green, which overlies the gray symbols. The studied site (TN041-8PG/8JPC) is shown in the yellow star. Base map was generated using Ocean Data View (75). (B) The number of compiled sites that show lower and higher oxygenation in LGM relative to the Holocene binned by the water depth. The bottom green arrow shows the globally integrated oceanic DO content change indicated by reconstructed seawater thallium isotopic composition change.