GEOCHEMICAL COMPARISON OF PINK AND WHITE GLOBIGERINOIDES RUBER: INVESTIGATING HABITAT NICHES AND THEIR PALEOCLIMATIC SIGNIFICANCE
In contrast with previous work, no distinct geochemical offset was found between the two chromotypes in δ13C, δ18O, or Mg/Ca space. In addition, we compared pink G. ruber and white G. ruber (s.s.) δ13C and δ18O in a down core record spanning from the present interglacial to the last glacial maximum. This comparison also indicated no significant geochemical offset between the two chromotypes. Based on these comparisons, we concluded that pink G. ruber and white G. ruber (s.s.) yield visually indistinguishable geochemical signatures in open basin, low accumulation sites and thus, may not need to be separated in paleoclimate reconstructions if the white chromotype is insufficiently abundant for the analyses prescribed.