Fig. 5: Whole-rock compositional variations of the Kangjinla ophiolitic peridotites and melt-peridotite reaction modeling. | Nature Communications

Fig. 5: Whole-rock compositional variations of the Kangjinla ophiolitic peridotites and melt-peridotite reaction modeling.

From: Vertical depletion of ophiolitic mantle reflects melt focusing and interaction in sub-spreading-center asthenosphere

Fig. 5: Whole-rock compositional variations of the Kangjinla ophiolitic peridotites and melt-peridotite reaction modeling.The alternative text for this image may have been generated using AI.

Variations of whole-rock MgO (wt%) versus SiO2 (wt%, a, e), FeOT (wt%, b, f), and CaO (wt%, c, g) as well as whole-rock Ti (ppm) versus Yb (ppm, d, h) for the Kangjinla ophiolitic peridotites, compared to the solid-rock products modeled by open-system melt-peridotite reactions. The melt-peridotite reaction modeling was done using the alphaMELTS program52. Two scenarios of reaction are shown as “Melt 1 + Peridotite” in (a–d) and “Melt 2 + Peridotite” in (e–h). The modeling conditions (P and T) and the compositions of Melt 1, Melt 2, and Peridotite (lherzolite KJL14-05A) have been shown in Supplementary Dataset 10. Along with the addition of melts, the reactions at 1300 °C will continue until the formation of pure dunite. Gray and light-blue circles represent abyssal peridotites13,14,15 and the published Luobusa peridotites20, 32, 35, 38, respectively.

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