Subduction of a spreading ridge within the Bangong Co-Nujiang Tethys Ocean: Evidence from Early Cretaceous mafic dykes in the Duolong porphyry Cu-Au deposit, western Tibet
We investigated the mafic dykes intruded into the near-trench accretionary prism. The mafic dykes were derived from the adakite-metasomatized mantle wedge. Ridge subduction may be the genetic model for the mafic dykes.