Origin of the slab component in arc lavas from across-arc variation of B and Pb isotopes

@article{Ishikawa1994OriginOT,
  title={Origin of the slab component in arc lavas from across-arc variation of B and Pb isotopes},
  author={Tsuyoshi Ishikawa and Eizo Nakamura},
  journal={Nature},
  year={1994},
  volume={370},
  pages={205-208}
}
AT convergent margins, the subducting oceanic slab is thought to dehydrate, producing fluids which metasomatize the overlying mantle wedge where island-arc magma forms. However, the nature and origin of the metasomatizing fluid, its source composition and its relation to the genesis of the chemical characteristics of arc magmas are largely controversial. Across-arc variation in the chemistry of arc lavas provides a useful key to this problem, because it may reflect the changes in the physical… CONTINUE READING
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