Deep-sea coral δ13C: A tool to reconstruct the difference between seawater pH and δ11B-derived calcifying fluid pH

• Main Authors: Martin, Patrick, Goodkin, Nathalie Fairbank, Stewart, Joseph A., Foster, Gavin L., Sikes, Elisabeth L., White, Helen K., Hennige, Sebastian, Roberts, J. Murray
• Other Authors: Asian School of the Environment
• Format: Article
• Language: English
• Published: 2016
• Subjects: Biomineralization; Coral skeleton
• Online Access: https://hdl.handle.net/10356/82656; http://hdl.handle.net/10220/40223
• Institution: Nanyang Technological University

The boron isotopic composition (δ11B) of coral skeleton is a proxy for seawater pH. However, δ11B-based pH estimates must account for the pH difference between seawater and the coral calcifying fluid, ΔpH. We report that skeletal δ11B and ΔpH are related to the skeletal carbon isotopic composition (...