Boron isotope evidence for shallow fluid transfer across subduction zones by serpentinized mantle (Articolo in rivista)

Type
Label
  • Boron isotope evidence for shallow fluid transfer across subduction zones by serpentinized mantle (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1130/G33233.1 (literal)
Alternative label
  • Scambelluri M. [1]; Tonarini S. [2] (2012)
    Boron isotope evidence for shallow fluid transfer across subduction zones by serpentinized mantle
    in Geology (Boulder Colo.); Geological Society Of America, Inc., Boulder (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Scambelluri M. [1]; Tonarini S. [2] (literal)
Pagina inizio
  • 907 (literal)
Pagina fine
  • 910 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://geology.gsapubs.org/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 40 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [1] Dipartimento di Scienza della Terra, Ambiente e Vita, University of Genova, Corso Europa 26, 16132 Genoa, Italy [2] CNR, IGG - Istituto di geoscienze e georisorse, Pisa (literal)
Titolo
  • Boron isotope evidence for shallow fluid transfer across subduction zones by serpentinized mantle (literal)
Abstract
  • Serpentinites formed by alteration of oceanic and forearc mantle are major volatile and fluid-mobile element reservoirs for arc magmatism, though direct proof of their dominance in the subduction-zone volatile cycles has been elusive. Boron isotopes are established markers of fluid-mediated mass transfer during subduction. Altered oceanic crust and sediments have been shown to release in the subarc mantle 11B-depleted fluids, which cannot explain 11B enrichment of many arcs. In contrast to these crustal reservoirs, we document high ?11B values retained in subduction-zone Alpine serpentinites. No 11B fractionation occurs in these rocks with progressive burial: the released 11B-rich fl uids uniquely explain the elevated ?11B of arc magmas. B, O-H, and Sr isotope systems indicate that serpentinization was driven by slab fl uids that infi ltrated the slab-mantle interface early in the subduction history. (literal)
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