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Progress in Earth and Planetary Science
Fig. 11 | Progress in Earth and Planetary Science

Fig. 11

From: Geochemical characteristics of back-arc basin lower crust and upper mantle at final spreading stage of Shikoku Basin: an example of Mado Megamullion

Fig. 11

Schematic models for the evolution of Mado Megamullion. a Deep-seated formation of the dunites and gabbros. b Mafic to felsic melt intrusion during the progressive exhumation of the Mado Megamullion. c Dolerite dike intrusion at the final emplacement of the Mado Megamullion. d A concept of matured back-arc spreading during the formation of Mado Megamullion. Fertile mantle without subduction-related elemental input is the source of melt forming the Mado Megamullion. a–c were modified after Basch et al. (2020)

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