@article{fdi:010060367,
  title = {{A} core-top study of dissolution effect on {B}/{C}a in {G}lobigerinoides sacculifer from the tropical {A}tlantic : potential bias for paleo-reconstruction of seawater carbonate chemistry},
  author = {{C}oadic, {R}. and {B}assinot, {F}. and {D}ouville, {E}. and {M}ichel, {E}. and {D}issard, {D}elphine and {G}reaves, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{I}t has been recently shown that {B}/{C}a in planktonic foraminiferal calcite can be used as a proxy for seawater p{H}. {B}ased on the study of surface sediments (multi-cores) retrieved along a depth transect on the {S}ierra {L}eone {R}ise ({E}astern {E}quatorial {A}tlantic), we document the decrease of {B}/{C}a and {M}g/{C}a of {G}lobigerinoides sacculifer shells with increasing water depth and dissolution. {T}his effect of dissolution on {B}/{C}a may potentially represent a severe bias for paleo-p{H} reconstructions using this species. {S}amples of {G}. sacculifer were analyzed independently at two laboratories for {B}/{C}a and {M}g/{C}a. {B}oth sets of results show a systematic decrease of {B}/{C}a and {M}g/{C}a along the depth transect, with an overall loss of similar to 14 mu mol/mol (similar to 15%) for {B}/{C}a and of similar to 0.7mmol/mol (similar to 21%) for {M}g/{C}a between the shallowest (2640m) and the deepest (4950m) sites. {B}ecause of this dissolution effect, surface water p{H} reconstructed from {B}/{C}a of {G}. sacculifer decreases by similar to 0.11 units between the shallowest site and the deepest site, a magnitude similar to the expected glacial/interglacial surface water p{H} changes.},
  keywords = {{B}/{C}a ; planktonic foraminifera ; dissolution ; {A}tlantic {O}cean ; {OCEAN} {ATLANTIQUE} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{G}eochemistry {G}eophysics {G}eosystems},
  volume = {14},
  numero = {4},
  pages = {1053--1068},
  ISSN = {1525-2027},
  year = {2013},
  DOI = {10.1029/2012gc004296},
  URL = {https://www.documentation.ird.fr/hor/fdi:010060367},
}