@article{fdi:010018376,
  title = {{G}eochemistry vs. seismo-tectonics along the volcanic {N}ew {H}ebrides {C}entral {C}hain ({S}outhwest {P}acific)},
  author = {{M}onzier, {M}ichel and {R}obin, {C}laude and {E}issen, {J}ean-{P}hilippe and {C}otten, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{C}ompositional variations (major- and trace-element) of {P}leistocene to {P}resent rocks along the volcanic {N}ew {H}ebrides {C}entral {C}hain ({S}outhwest {P}acific) are presented and discussed, using a new set of analyses. {W}e focus in particular on the anomalous {M}g-, {K}-, {LILE}- and {LREE}-rich and {A}l and {S}i-poor character of the basalts from {A}oba and {S}anta {M}aria volcanoes (and, to a lesser extent, from {A}mbrym volcano), all located in the area where the {D}'{E}ntrecasteaux {Z}one collides with the arc. {I}n addition, we note a compositional transition from 'normal' arc basalts to boninite-related high-{M}g andesites at the southern termination of the {NHCC}. {T}he peculiar composition of the rocks of the volcanoes facing the {D}'{E}ntrecasteaux {Z}one has traditionally been related, more or less directly, to the collision-subduction occurring in this area. {W}e present an alternative hypothesis, of a strong geochmeical anomaly under {S}anta {M}aria and {A}oba volcanoes, unrelated to this collision. {I}n this model, a westward and upward invasion of {DUPAL}-type enriched mantle, corroborated by the pattern of intermediate seismicity, occurs under this part of the arc, in strong contrast to the usual {P}acific-type {MORB} mantle source present under all other volcanoes of the {NHCC}. {S}uch a {DUPAL}-type source may explain the anomalous geochemistry of the resulting volcanic products. ({R}{\'e}sum{\'e} d'auteur)},
  keywords = {{ROCHE} {VOLCANIQUE} ; {GEOCHIMIE} ; {COMPOSITION} {CHIMIQUE} ; {VARIATION} ; {ELEMENT} {CHIMIQUE} {MAJEUR} ; {ELEMENT} {EN} {TRACE} ; {TECTONIQUE} {DE} {PLAQUES} ; {SEISME} ; {ARC} {VOLCANIQUE} ; {BASALTE} ; {SOURCE} {MAGMATIQUE} ; {MANTEAU} ; {VANUATU} ; {FIDJI} ; {LOYAUTE} ; {ENTRECASTEAUX} ; {PACIFIQUE} {SUD} {OUEST} ; {AOBA} {VOLCAN} ; {SANTA} {MARIA} {VOLCAN}},
  booktitle = {},
  journal = {{J}ournal of {V}olcanology and {G}eothermal {R}esearch},
  volume = {78},
  numero = {},
  pages = {1--29},
  ISSN = {0377-0273},
  year = {1997},
  DOI = {10.1016/{S}0377-0273(97)00006-1},
  URL = {https://www.documentation.ird.fr/hor/fdi:010018376},
}