noaa-ocean-17397 Central Pacific ODP865 d18O and Mg/Ca Analyses from the Paleocene-Eocene Thermal Maximum Kozdon, R.; Kelly, D.C.; Kitajima, K.; Strickland, A.; Fournelle, J.H.; Valley, J.W. Central Pacific ODP865 d18O and Mg/Ca Analyses from the Paleocene-Eocene Thermal Maximum 2014-11-04 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/17397 Investigator R. Kozdon Investigator D.C. Kelly Investigator K. Kitajima Investigator A. Strickland Investigator J.H. Fournelle Investigator J.W. Valley earth science paleoclimate paleoceanography notes,null,null,null,null,paleoceanography,null,null,N,primary 133Cs+ beam diameter; used for delta 18O analysis earth science paleoclimate paleoceanography strontium,carbonate|planktic foraminifer,null,parts per million,null,paleoceanography,null,secondary ion mass spectrometry,N,12 um beam-spot size earth science paleoclimate paleoceanography notes,null,null,null,null,paleoceanography,null,null,C,null earth science paleoclimate paleoceanography depth,null,null,meter,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography inorganic compound index,carbonate|planktic foraminifer,null,percent,null,paleoceanography,null,null,N,total oxides earth science paleoclimate paleoceanography sample identification,null,null,null,null,paleoceanography,null,null,C,null earth science paleoclimate paleoceanography notes,null,null,null,null,paleoceanography,null,null,N,analysis number used during this session earth science paleoclimate paleoceanography calcium dioxide,carbonate|planktic foraminifer,null,dimensionless,null,paleoceanography,null,electron probe x-ray microanalysis,N,EPMA concentration earth science paleoclimate paleoceanography magnesium,carbonate|planktic foraminifer,one standard error,percent,null,paleoceanography,null,secondary ion mass spectrometry,N,11 um beam-spot size earth science paleoclimate paleoceanography strontium,carbonate|planktic foraminifer,one standard error,percent,null,paleoceanography,null,secondary ion mass spectrometry,N,13 um beam-spot size earth science paleoclimate paleoceanography magnesium oxide,carbonate|planktic foraminifer,null,dimensionless,null,paleoceanography,null,electron probe x-ray microanalysis,N,EPMA concentration earth science paleoclimate paleoceanography age,null,null,million years ago,null,paleoceanography,null,null,N,null earth science paleoclimate paleoceanography delta 18O,carbonate|planktic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,diagenetic carbonate earth science paleoclimate paleoceanography calcium oxide,carbonate|planktic foraminifer,null,dimensionless,null,paleoceanography,null,electron probe x-ray microanalysis,N,EPMA concentration earth science paleoclimate paleoceanography magnesium,carbonate|planktic foraminifer,null,parts per million,null,paleoceanography,null,secondary ion mass spectrometry,N,10 um beam-spot size earth science paleoclimate paleoceanography strontium oxide,carbonate|planktic foraminifer,null,dimensionless,null,paleoceanography,null,electron probe x-ray microanalysis,N,EPMA concentration earth science paleoclimate paleocean geochemistry earth science paleoclimate paleocean oxygen isotopes geoscientificInformation 55200000 cal yr BP 48800000 cal yr BP Complete 18.440167 18.440167 -179.555667 -179.555667 -1530 -1530 Ocean Pacific Ocean Central Pacific Ocean ODP 865>LATITUDE 18.440167>LONGITUDE -179.555667 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Kozdon, R., D.C. Kelly, K. Kitajima, A. Strickland, J.H. Fournelle, and J.W. Valley 2013 Paleoceanography 28 517-528 10.1002/palo.20048

We report d18O and minor element (Mg/Ca, Sr/Ca) data acquired by high-resolution,in situ secondary ion mass spectrometry (SIMS) from planktic foraminiferal shells and 100–500 µm sized diagenetic crystallites recovered from a deep-sea record (ODP Site 865) of the Paleocene-Eocene thermal maximum (PETM). The d18O of crystallites (~1.2‰ Pee Dee Belemnite (PDB)) is ~4.8‰ higher than that of planktic foraminiferal calcite ( 3.6‰ PDB), while crystallite Mg/Ca and Sr/Ca ratios are slightly higher and substantially lower than in planktic foraminiferal calcite, respectively. The focused stratigraphic distribution of the crystallites signals an association with PETM conditions; hence, we attribute their formation to early diagenesis initially sourced by seafloor dissolution (burndown) ensued by reprecipitation at higher carbonate saturation. The Mg/Ca ratios of the crystallites are an order of magnitude lower than those predicted by inorganic precipitation experiments, whichmay reflect a degree of inheritance from“donor” phases of biogenic calcite that underwent solution in the sediment column. In addition, SIMS d18O and electron microprobe Mg/Ca analyses that were taken within a planktic foraminiferal shell yield parallel increases along traverses that coincide with muricae blades on the chamber wall. The parallel d18O and Mg/Ca increases indicate a diagenetic origin for the blades, but their d18O value ( 0.5‰ PDB) is lower than that of crystallites suggesting that these two phases of diagenetic carbonate formed at different times. Finally, we posit that elevated levels of early diagenesis acted in concert with sediment mixing and carbonate dissolution to attenuate the d18O decrease signaling PETM warming in “wholeshell” records published for Site 865. STUDY NOTES: In situ oxygen isotope data were acquired between January and March 2011 in the WiscSIMS Laboratory at UW-Madison by a CAMECA ims-1280 large radius ion microprobe. A 133Cs+ primary ion beam with an intensity of ~1.6 nA was focused to a diameter of ~10 µm. For smaller domains, a 133Cs+ primary ion beam with an intensity of ~30 pA was focused to a diameter of ~3 µm. Charging of the sample surface was compensated by Au-coating and an electron flood gun. Grains of UWC-3 calcite standard (d18O = 12.49 per mill V-SMOW, Kozdon et al. 2009) were cast in the center of each epoxy mount. Four to five consecutive measurements of UWC-3 calcite standard were performed before and after every set of up to 15 sample analyses. SIMS analyses for minor and major element concentrations were performed using a primary O- ion beam, with an intensity of 1 nA, focused to a ~ 1.5 µm beam spot size. Further, Mg/Ca measurements in small domains were performed on the CAMECA SX51 electron microprobe at the UW-Madison Department of Geoscience.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/kozdon2013/kozdon2013-epma.txt Formatted Text File; ODP865 EPMA Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/kozdon2013/kozdon2013-mgsr.txt Formatted Text File; ODP865 Mg and Sr Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/kozdon2013/kozdon2013-d18o.txt Formatted Text File; ODP865 d18O Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11