Fig. 5: Boron isotopes and trace element systematics of the Expedition 352 boninites compared to mixing trajectories between the calculated slab melt/fluid and the depleted mantle. | Nature Communications

Fig. 5: Boron isotopes and trace element systematics of the Expedition 352 boninites compared to mixing trajectories between the calculated slab melt/fluid and the depleted mantle.

From: Boron isotopes in boninites document rapid changes in slab inputs during subduction initiation

Fig. 5

Plots of a Ba/Nb and b Ba/Sr vs. δ11B for the International Ocean Discovery Program Expedition 352 boninites. Error bars (2σ = 0.6‰) are for boninite δ11B. The mixing curves are between the depleted mid-ocean ridge basalt mantle (DM32,49,64) and the calculated gabbroic protolith granulite melts. The numbers on the mixing curves represent the mass percentage of the slab melt. The δ11B of the gabbroic protolith granulite melts are assumed to be from +0.5‰ to +8.5‰. LSB: low-silica boninite; HSB: high-silica boninite.

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