View article

High-latitude cold-water coral (CWC) reefs are particularly vulnerable due to enhanced CO2 uptake in these regions. For both modern and fossil Lophelia pertusa samples, retrieved along the Norwegian margin from Lopphavet (70.6 N) over Sula to Oslofjord (59 N), we have analysed the boron isotope systematics (δ11B) as a potential seawater pH proxy [1]. This case study investigated potential heterogeneities within single specimens and recent regional to local variations Analyses were undertaken using MC-ICP-MS based bulk (solution) analyses and continuous laser ablation (LA) profiles, as well as secondary ion mass spectrometry (SIMS) spot measurementsin combination with fluorescence microscopy. The latter provided a fast pre-screening routine for phase-specific subsampling. Bulk analyses of around 5 mg milled from the massive thecal walls from samples of the main transect sites resulted in a recent …