Fig. 3: Temperature–pressure and oxygen fugacity of the mantle source for mantle-derived melts. | Nature Communications

Fig. 3: Temperature–pressure and oxygen fugacity of the mantle source for mantle-derived melts.

From: The constant oxidation state of Earth’s mantle since the Hadean

Fig. 3: Temperature–pressure and oxygen fugacity of the mantle source for mantle-derived melts.The alternative text for this image may have been generated using AI.

Average temperatures and pressures of partial melting for Archean (a) and Phanerozoic magmas (b). The relationship between melting pressure and fo2 of the mantle for Archean (c) and Phanerozoic magmas (d). The parallel grey lines represent the fo2 of the mantle with different Fe3+/ΣFe ratios calculated by the thermodynamic model20. The fo2 of mantle-derived melts have been corrected to their respective source conditions. The error bars for all results are 1σ and the legends and symbols as in Fig. 1.

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