georefid:2012-087237SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2013-07-08T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=2012-087237<gco:CharacterString>Quantifying ocean acidification during the Palaeogene hyperthermals</gco:CharacterString>2011-01-01publicationgeorefid:2012-087237Foster, L. C.University of Bristol, Department of Earth Sciences, Bristol, United KingdomauthorSchmidt, D. N.Yale University, United StatesauthorRidgwell, A.Grant Institute, United KingdomauthorThomas, E.authorCoath, C. D.authorHinton, R.authorScott, T. B.authorMineralogical Society, London, United KingdompublisherdocumentDigitalIn: Anonymous, Goldschmidt 2011 abstract volume75 (3)860Palaeogene hyperthermals are associated with rapid negative Carbon Isotope Excursions (CIE) and global warming and hence may provide an analogue for future ocean acidification. We present delta (super 11) B (pH), Mg/Ca (temperature), B/Ca (carbonate ion concentration) and wall thickness data from the benthic foraminifer Oridorsalis umbonatus to study the extent of the change in the carbonate system and the calcification response. In addition, we present Electron Backscatter data to assess preservation and diagenetic alteration. Our study examines both the temporal and geographical response of ocean acidification during Palaeogene hyperthermals. For the former we present data from Walvis Ridge (1262, paleodepth 3500 m) for three proposed paleo- ocean acidification events: Early Late Palaeocene Event (ELPE), Paleocene-Eocene Thermal Maximum (PETM) and ELMO (59- 53 Ma). These events differ in the extent of carbonate dissolution and thus allow us to study the relative changes in ocean carbonate chemistry. We also present a detailed study of the PETM across a range of sites on Exmouth Plateau (762), Kerguelen Plateau (1135) and a shallower site on Walvis Ridge (1263, paleodepth 1500 m) to determine the global response.completedStratigraphyacidificationalkaline earth metalsAtlantic OceanB-11/B-10B/Cabenthic taxaboroncalcificationcalciumcarbonate ioncarbonatesCenozoicdiagenesisExmouth Plateauexperimental studiesForaminiferageochemistryIndian OceanInvertebrataisotopesKerguelen PlateauLeg 122Leg 183Leg 208magnesiummarine environmentmetalsMg/CamicrofossilsOcean Drilling ProgramODP Site 1135ODP Site 1262ODP Site 1263ODP Site 762Oridorsalis umbonatuspaleo-oceanographyPaleocene-Eocene Thermal MaximumpaleoecologyPaleogenepaleotemperaturepHProtistaquantitative analysisSouth Atlanticstable isotopesTertiarytestsWalvis Ridgeurn:org.iodp:exp:122urnlargerWorkCitationcampaignurn:org.iodp:exp:183urnlargerWorkCitationcampaignurn:org.iodp:exp:208urnlargerWorkCitationcampaignurn:org.iodp:exp:183:site:1135urnlargerWorkCitationstudyurn:org.iodp:exp:183urnlargerWorkCitationcampaignurn:org.iodp:exp:208:site:1262urnlargerWorkCitationstudyurn:org.iodp:exp:208urnlargerWorkCitationcampaignurn:org.iodp:exp:208:site:1263urnlargerWorkCitationstudyurn:org.iodp:exp:208urnlargerWorkCitationcampaignurn:org.iodp:exp:122:site:762urnlargerWorkCitationstudyurn:org.iodp:exp:122urnlargerWorkCitationcampaignEnglishgeoscientificInformation1.3400112.1515-59.4200-19.5314application/pdfunknownSEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContacthttp://minmag.geoscienceworld.org/content/75/3/825.full.pdfdownload