Fig. 4: Inorganic aragonite precipitation rates as a function of seawater Ωar at 23.7 °C (estimated mean annual SST for Poetz based on linear extension) and 28 °C (estimated early Badenian summer SST in the southern and central parts of the Central Paratethys55). | Communications Earth & Environment

Fig. 4: Inorganic aragonite precipitation rates as a function of seawater Ωar at 23.7 °C (estimated mean annual SST for Poetz based on linear extension) and 28 °C (estimated early Badenian summer SST in the southern and central parts of the Central Paratethys55).

From: Mid-Miocene warmth pushed fossil coral calcification to physiological limits in high-latitude reefs

Fig. 4

The red vertical bar marks the reconstructed range of surface ocean Ωar of 2.7 to 3.5 for the MCO12. Average calcification rates of the three fossil Porites corals studied (colored horizontal lines) are far from inorganic precipitation, consistent with carbonate chemistry up-regulation of the calcifying fluid80.

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