Stable Sr-isotope, Sr/Ca, Mg/Ca, Li/Ca and Mg/Li ratios in the scleractinian cold-water coral Lophelia pertusa

The influence of seawater pH on U / Ca ratios in the scleractinian cold-water coral <i>Lophelia pertusa</i>

“…Note: both elemental ratios were measured on the same samples. Error bars correspond to 0.89 % (2SD) for U / Ca ratios and 5.4 % (2SD) for the Li / Ca ratios (Raddatz et al, 2013) Both relationships display a significant inverse correlation with r 2 = 0.71 for the entire sample set and r 2 = 0.86 for the mid-plan section.…”

“…In such models trace metals are incorporated into the aragonitic lattice from an ECF, which is initially similar to seawater in composition. However, several studies have shown that this cannot be the only controlling mechanism explaining trace metal incorporation during coral biomineralization (Allison et al, 2010;Brahmi et al, 2012;Case et al, 2010;Gagnon et al, 2007;Hathorne et al, 2013b;Raddatz et al, 2013;Rollion-Bard et al, 2009;Gagnon et al, 2012). The same transect through the L. pertusa (Little Galway Mound, M61/1-218) skeleton reveals higher Mg / Ca and Li / Ca ratios in the COC region (Raddatz et al, 2013) associated with lower U / Ca content (Fig.…”

“…7. Intra-coral and sample set U / Ca ratios plotted against Li / Ca from Raddatz et al (2013). Note: both elemental ratios were measured on the same samples.…”

“…These studies could clearly identify the COC by scanning electron microscope pictures. In particular, the study of Raddatz et al (2013) shows intra-coral Mg / Ca ratios from min. 2.5 (theca wall) to max.…”

“…Case et al, 2010;Cohen et al, 2006;Gagnon et al, 2007;Lutringer et al, 2005;Montagna et al, 2006;Raddatz et al, 2013;RollionBard et al, 2009;Rüggeberg et al, 2008;Smith et al, 2000). To date only a few studies have focused on the reconstruction of the carbonate system using CWC skeletons (Anagnostou et al, 2011(Anagnostou et al, , 2012Blamart et al, 2007;McCulloch et al, 2012;Rollion-Bard et al, 2011a, b;Thresher et al, 2011).…”