[B-PT03] Biocalcification and the Geochemistry of Proxies -Field ecology, Laboratory culture and Paleo

★ [BPT03-08] Minor element partitioning and mineralogy in limpets from a CO_{2} vent site

*Gernot Nehrke¹、Gerald LANGER²、Aleksey SADEKOV²、Cecilia BAGGINI³、Riccardo RODOLFO-METALPA⁴、Jason HALL-SPENCER³、Jelle Bijma¹、Henry ELDERFIELD² (1.Biogeosciences, Alfred-Wegener-Institut、2.University of Cambridge、3.School of Marine Science and Engineering, University of Plymouth、4.CoReUs, IRD, Centre IRD de Noumea)

キーワード：calcification, proxy, CO2, mineralogy, patellogastropod limpet

Specimens of the patellogastropod limpet Patella caerulea were collected within and outside a CO₂ vent site at Ischia, Italy. The shells were sectioned transversally and scanned for polymorph distribution by means of confocal Raman microscopy. Minor element to calcium ratios were measured using laser-ablation-inductively-coupledplasma-mass-spectroscopy (LA-ICPMS). Mg/Ca, Sr/Ca, and Li/Ca ratios were determined in calcitic as well as aragonitic parts of the shells. This approach allows for investigating the effects of the polymorph and the seawater carbonate chemistry on minor element partitioning separately.