Japan Geoscience Union Meeting 2015

Presentation information

International Session (Oral)

Symbol B (Biogeosciences) » B-PT Paleontology

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

Tue. May 26, 2015 11:00 AM - 12:45 PM 104 (1F)

Convener:*Takashi Toyofuku(Japan Agency for Marine-Earth Science and Technology (JAMSTEC)), Hiroshi Kitazato(Institute of Biogeosciences (BioGeos),Japan Agency for Marine-Earth Science and Technology (JAMSTEC)), Jelle Bijma(Alfred-Wegener-Institut fur Polar- und Meeresforschung), Chair:Jelle Bijma(Alfred-Wegener-Institut fur Polar- und Meeresforschung)

11:30 AM - 11:54 AM

[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)

Keywords: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.