Fig. 5: Schematic illustration explaining the variation in δD in Jurassic and Early Cretaceous granites from the NCC and its relationship with the Paleo-Pacific Plate subduction processes. | Nature Communications

Fig. 5: Schematic illustration explaining the variation in δD in Jurassic and Early Cretaceous granites from the NCC and its relationship with the Paleo-Pacific Plate subduction processes.

From: Light δD apatites reveal deep origin water in North China Craton intracontinental granites and basalts

Fig. 5

Blue arrows denote water transportation. a Moderate dehydration of the cold paleo-Pacific plate at shallow depth when it subducts flatly along the craton’s lithospheric root make the deeper slab not markedly D-depleted, thus the water released from deeper slab, and the resultant metasomatized mantle and granites are moderately depleted in D. b In Early Cretaceous, hot subduction generate extremely D-depleted dehydrated slab in the MTZ due to substantial dehydration at shallow levels, resulting in an extremely isotopically light metasomatized mantle and granites.

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