Subduction zone geochemistry

Crustal recycling at convergent plate boundaries is essential to mantle heterogeneity. However, crustal signatures in the mantle source of basaltic rocks above subduction zones were primarily incorporated in the form of liquid rather than solid phases. The physicochemical property of liquid phases is determined by the dehydration behavior of crustal rocks at the slab-mantle interface in subduction channels. Because of the significant fractionation in incompatible trace elements but the full inheritance in radiogenic isotopes relative to their crustal sources, the production of liquid phases is crucial to the geochemical transfer from the subducting crust into the mantle. In this process, the stability of…

• MO
  Ministry of Science and Technology

  Award: 2015CB856100
• NN
  National Natural Science Foundation of China

  Award: 41590620
• CA
  Chinese Academy of Sciences

  Award: XDB18020303