@article{fdi:010060861,
  title = {{F}rom the subtropics to the central equatorial {P}acific {O}cean : neodymium isotopic composition and rare earth element concentration variations},
  author = {{G}renier, {M}. and {J}eandel, {C}. and {L}acan, {F}. and {V}ance, {D}. and {V}enchiarutti, {C}. and {C}ros, {A}. and {C}ravatte, {S}ophie},
  editor = {},
  language = {{ENG}},
  abstract = {{N}eodymium isotopic compositions (epsilon({N}d)) and rare earth element ({REE}) concentrations were measured for filtered surface to deep waters (112 samples) in the {S}outhern {T}ropical {P}acific. {T}he relatively detailed picture of these tracer distributions allowed us to refine the areas where oceanic epsilon({N}d) variations occur. epsilon({N}d) values increase for most of the water masses flowing from {S}amoa to the {S}olomon {S}ea and in the {P}apua {N}ew {G}uinea ({PNG}) area, as already observed. {F}urthermore, water masses arriving from the eastern equatorial {P}acific (200-550m depth) also revealed radiogenic values, possibly acquired in the vicinity of the {S}outh {A}merican coasts and {G}alapagos {I}slands. {T}hese epsilon({N}d) variations affect the whole water column. {T}he most likely process causing such variations is "boundary exchange" between the numerous radiogenic slopes/margins located in this area and seawater flowing past. {D}issolution of atmospheric deposition and/or diffuse streaming of volcanic ash are also suggested to explain the radiogenic epsilon({N}d) observed at the surface in the {PNG} area. {I}nterestingly, a positive europium ({E}u) anomaly characterizes the normalized {REE} patterns of most of the studied water masses. {T}his anomaly is consistent with the {REE} patterns of sediment and rock samples that are potential sources for the local waters. {S}uch consistency reinforces the hypothesis that lithogenic sources play a major role in the oceanic {REE} budget, thanks to "boundary exchange." {T}he data set presented here is a good basis for further sampling that will be realized in the framework of the ongoing {GEOTRACES} program (www.geotraces.org).},
  keywords = {{PACIFIQUE} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch. {O}ceans},
  volume = {118},
  numero = {2},
  pages = {592--618},
  ISSN = {0148-0227},
  year = {2013},
  DOI = {10.1029/2012jc008239},
  URL = {https://www.documentation.ird.fr/hor/fdi:010060861},
}