@article{fdi:010070921,
  title = {{I}sotopically (delta {C}-13 and delta {O}-18) heavy volcanic plumes from {C}entral {A}ndean volcanoes : a field study},
  author = {{S}chipper, {C}. {I}. and {M}oussallam, {Y}. and {C}urtis, {A}. and {P}eters, {N}. and {B}arnie, {T}. and {B}ani, {P}hilipson and {J}ost, {H}. {J}. and {H}amilton, {D}. and {A}iuppa, {A}. and {T}amburello, {G}. and {G}iudice, {G}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}table isotopes of carbon and oxygen in volcanic gases are key tracers of volatile transfer between {E}arth's interior and atmosphere. {A}lthough important, these data are available for few volcanoes because they have traditionally been difficult to obtain and are usually measured on gas samples collected from fumaroles. {W}e present new field measurements of bulk plume composition and stable isotopes (delta({CCO}2)-{C}-13 and delta({OH}2{O}+)-{O}-18 {CO}2) carried out at three northern {C}hilean volcanoes using {M}ulti{GAS} and isotope ratio infrared spectroscopy. {C}arbon and oxygen in magmatic gas plumes of {L}astarria and {I}sluga volcanoes have delta {C}-13 in {CO}2 of + 0.76% to + 0.77% ({VPDB}), similar to slab carbonate; and delta {O}-18 in the {H}2{O} + {CO}2 system ranging from + 12.2% to + 20.7% ({VSMOW}), suggesting significant contributions from altered slab pore water and carbonate. {T}he hydrothermal plume at {T}acora has lower delta({CCO}2)-{C}-13 of -3.2% and delta({OH}2{O})-{O}-18+ {CO}2 of + 7.0%, reflecting various scrubbing, kinetic fractionation, and contamination processes. {W}e show the isotopic characterization of volcanic gases in the field to be a practical complement to traditional sampling methods, with the potential to remove sampling bias that is a risk when only a few samples from accessible fumaroles are used to characterize a given volcano's volatile output. {O}ur results indicate that there is a previously unrecognized, relatively heavy isotopic signature to bulk volcanic gas plumes in the {C}entral {A}ndes, which can be attributed to a strong influence from components of the subducting slab, but may also reflect some local crustal contamination. {T}he techniques we describe open new avenues for quantifying the roles that subduction zones and arc volcanoes play in the global carbon cycle.},
  keywords = {{C}arbon isotopes ; {I}sotope ratio infrared spectroscopy ; {V}olcanic gases ; delta {C}-13 ; delta {O}-18 ; {CHILI} ; {ANDES}},
  booktitle = {},
  journal = {{B}ulletin of {V}olcanology},
  volume = {79},
  numero = {8},
  pages = {art. 65 [15 p.]},
  ISSN = {0258-8900},
  year = {2017},
  DOI = {10.1007/s00445-017-1146-4},
  URL = {https://www.documentation.ird.fr/hor/fdi:010070921},
}