Fig. 5: Barium-Sr-Nd isotope variations of the Tonga-Kermadec and Mariana arc lavas, and mixing modeling between mantle, metasediment, and AOC fluid. | Nature Communications

Fig. 5: Barium-Sr-Nd isotope variations of the Tonga-Kermadec and Mariana arc lavas, and mixing modeling between mantle, metasediment, and AOC fluid.

From: Arc magma formation through the fluid-fluxed mélange melting in subduction zones

Fig. 5: Barium-Sr-Nd isotope variations of the Tonga-Kermadec and Mariana arc lavas, and mixing modeling between mantle, metasediment, and AOC fluid.

Plots of δ138/134Ba versus 87Sr/86Sr and 143Nd/144Nd for the Tonga-Kermadec arc lavas (a, b) and the Mariana arc lavas (c, d). Ba isotope data of the Tonga-Kermadec and Mariana arc lavas are from ref. 50,51. Yellow areas represent calculated mixing fields between DMM-type mantle and bulk metasediment; Numbers denote the proportion of bulk sediment in mélange by weight; Green areas represent the calculated mixing fields between mélange and AOC fluid. Details of the modeling calculations can be found in Supplementary Material Text S1 and Table S3.

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