# Central Pacific ODP865 d18O and Mg/Ca Analyses from the Paleocene-Eocene Thermal Maximum #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite original publication, online resource and date accessed when using this data. # If there is no publication information, please cite Investigator, title, online resource and date accessed. # # Description/Documentation lines begin with # # Data lines have no # # # Online_Resource: http://www.ncdc.noaa.gov/paleo/study/17397 # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/kozdon2013/kozdon2013-d18o.txt # # Archive: Paleoceanography #--------------------------------------- # Contribution_Date # Date: 2014-11-05 #--------------------------------------- # Title # Study_Name: Central Pacific ODP865 d18O and Mg/Ca Analyses from the Paleocene-Eocene Thermal Maximum #--------------------------------------- # Investigators # Investigators: Kozdon, R.; Kelly, D.C.; Kitajima, K.; Strickland, A.; Fournelle, J.H.; Valley, J.W. #--------------------------------------- # Description and Notes # Description: 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. #--------------------------------------- # Publication # Authors: Kozdon, R., D.C. Kelly, K. Kitajima, A. Strickland, J.H. Fournelle, and J.W. Valley # Published_Date_or_Year: 2013 # Published_Title: In situ d18O and Mg/Ca Analyses of Diagenetic and Planktic Foraminiferal Calcite Preserved in a Deep-Sea Record of the Paleocene-Eocene Thermal Maximum # Journal_Name: Paleoceanography # Volume: 28 # Issue: # Pages: 517-528 # Report Number: # DOI: 10.1002/palo.20048 # Abstract: 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. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: National Science Foundation # Grant: 1131516, 1053466 #--------------------------------------- # Funding_Agency # Funding_Agency_Name: Wisconsin Alumni Research Foundation # Grant: #--------------------------------------- # Site Information # Site_Name: ODP865 # Location: Central Pacific Ocean # Country: # Northernmost_Latitude: 18.44 # Southernmost_Latitude: 18.44 # Easternmost_Longitude: -179.556 # Westernmost_Longitude: -179.556 # Elevation: 1528.3 #--------------------------------------- # Data_Collection # Collection_Name: ODP865 d18O Koz13 # First_Year: 55200000 # Last_Year: 48800000 # Time_Unit: cal yrs BP # Core_Length: # Notes: Errors on d18O: ± 0.3‰ (2SD, spot-to-spot) for 10 um beam, and ± 0.8‰ (2SD, spot-to-spot) for 3 um beam. Core depths [Bralower and Mutterlose, 1995] and ages [Berggren et al., 1995] assigned to various nannofossil biostratigraphic datums were applied to calculate linear sedimentation rates that were, in turn, used to construct a chronostratigraphic framework for the samples. #--------------------------------------- # Chronology: # Age Model of ODP Site 865, PETM Section. Sample core depths, assigned calcareous nannofossil zones, and estimated ages. Core depths [Bralower and Mutterlose, 1995] and ages [Berggren et al., 1995] assigned to various nannofossil biostratigraphic datums were applied to calculate linear sedimentation rates that were, in turn, used to construct a chronostratigraphic framework for the samples. # Depth [mbsf] Age [Ma] Nannofossil Zone Hole Section Interval [cm] # 77.20 48.800 NP14a 865B 9H-2 70-72 # 78.20 49.180 NP14a 865B 9H-3 20-22 # 78.70 49.360 NP14a 865B 9H-3 70-72 # 79.60 49.700 NP14a 865B 9H-4 10-12 # 80.20 49.850 NP13 865B 9H-4 70-72 # 80.70 49.980 NP13 865B 9H-4 120-125 # 81.70 50.230 NP13 865B 9H-5 70-72 # 82.56 50.440 NP13 865B 9H-6 6-11 # 85.33 51.350 NP12 865B 10H-2 83-85 # 86.60 51.800 NP12 865B 10H-3 60-62 # 87.54 52.130 NP12 865B 10H-3 4-6 # 91.10 53.250 NP11 865B 10H-5 60-62 # 94.20 53.950 NP10 865B 11H-1 20-22 # 97.85 54.430 NP10 865B 11H-3 85-89 # 98.70 54.540 NP10 865B 11H-4 20-22 # 100.50 54.730 NP10 865C 12H-2 70-72 # 101.30 54.830 NP10 865C 12H-3 0-2 # 101.60 54.860 NP10 865C 12H-3 30-32 # 102.00 54.910 NP10 865C 12H-3 70-72 # 102.40 54.960 NP10 865C 12H-3 110-112 # 102.60 54.990 NP10 865C 12H-3 130-132 # 102.75 55.006 NP9 865C 12H-3 146-149 # 102.87 55.017 NP9 865C 12H-4 6-8 # 102.89 55.019 NP9 865C 12H-4 9-10 # 102.90 55.020 NP9 865C 12H-4 10-12 # 103.00 55.029 NP9 865C 12H-4 20-22 # 103.10 55.038 NP9 865C 12H-4 30-32 # 103.50 55.073 NP9 865C 12H-4 70-72 # 103.70 55.091 NP9 865C 12H-4 90-92 # 104.00 55.118 NP9 865C 12H-4 120-122 # 104.20 55.136 NP9 865C 12H-4 140-142 # 104.28 55.143 NP9 865C 12H-4 146-149 # 104.30 55.145 NP9 865C 12H-5 0-2 # 105.00 55.207 NP9 865C 12H-5 70-72 #--------------------------------------- # Variables # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) ## depth_mbsf depth,,,meter,,,,,N ## age_Ma age,,,million years BP,,,,,N ## SampleID Sample ID,,, ,,Paleoceanography,,,C ## d18Ofor+dia delta 18O,Foraminifera and diagenetic carbonate,,per mil PDB,,paleoceanography,,,N ## beamsize primary 133Cs+ beam diameter,,,um,,paleoceanography,used for d18O analysis,,N ## notes notes,,, ,,,,,C # Data # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Value: NaN depth_mbsf age_Ma SampleID d18Ofor+dia Beamsize notes 102.90 55.020 Shell 1-3 -3.81 3 865C Section 12-4 Interval 10-12 Data from Fig. 5f, g: SIMS d18O traverse: chamber wall to muricae blade; Mount ODP 865 (I) 102.90 55.020 Shell 1-4 -5.17 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 1-5 -3.93 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 1-6 -3.90 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 1-7 -3.55 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 1-8 -3.50 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 1-9 -4.17 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 1-10 -3.44 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 2-1 muricae blade -0.08 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 2-2 muricae blade -1.23 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 2-4 muricae blade -0.14 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 2-5 chamber wall -2.96 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 2-6 chamber wall -3.20 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 2-7 chamber wall -3.25 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 2-8 chamber wall -3.38 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 2-9 chamber wall -2.45 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 2-10 chamber wall -2.34 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 29-2 -5.46 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 29-3 -3.29 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 29-4 -3.38 3 865C Section 12-4 Interval 10-12 102.90 55.020 Shell 29-6 -5.97 3 865C Section 12-4 Interval 10-12 102.87 55.019 Shell 60-1 - infilling 1.86 3 865C Section 12-4 Interval 6-8 Data from Fig. 5b, c: Diagenetic infilling of M. allisonensis chamber; Mount ODP 865 (II) 102.87 55.019 Shell 60-2 - infilling 1.61 3 865C Section 12-4 Interval 6-8 103.60 55.120 Cemented foram shell-1-1 -3.28 3 865B Section 12-1 Interval 10-12 Data from Fig. 3a, b 103.60 55.120 Cemented foram shell-1-2 -2.80 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #6-2 0.09 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #6-3 1.32 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #6-4 0.19 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #6-5 0.20 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #6-6 0.88 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #6-7 1.61 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #6-8 0.07 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #6-9 0.18 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #6-10 1.48 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #6-11 0.34 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #6-12 1.85 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cemented foram shell-1-2 -4.53 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cemented foram shell-1-4 -2.91 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cemented foram shell-1-5 -2.82 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #4-4 1.36 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #4-5 2.00 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #4-6 1.21 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #4-7 0.24 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #4-8 1.44 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #4-9 1.02 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #4-10 1.79 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #4-11 1.32 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #4-12 2.95 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cemented foram shell-1 -2.68 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cemented foram shell-2 -3.21 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #7-4 0.30 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #7-5 1.44 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #7-6 1.82 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #7-7 1.13 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cement #7-8 1.00 3 865B Section 12-1 Interval 10-12 103.60 55.120 Cemented foram shell-1 -3.39 3 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #1-1 0.88 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #1-2 0.87 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #1-3 2.08 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #1-4 1.22 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #1-5 1.42 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #1-6 0.98 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #1-7 0.98 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #1-8 0.64 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #1-9 1.05 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #1-10 1.30 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #1-11 1.09 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #1-12 1.59 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #1-13 1.33 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #2-1 1.44 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #2-2 1.31 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #2-3 1.70 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #2-4 0.97 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #2-5 0.91 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #2-6 1.28 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #2-7 0.42 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #2-8 1.51 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #2-9 0.11 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #2-10 1.21 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #2-11 1.19 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #2-12 1.36 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #2-13 0.99 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #2-14 0.18 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #2-16 1.51 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #9-2 1.32 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #9-3 1.46 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #9-4 0.79 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #9-5 1.64 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #9-7 1.42 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #9-8 1.73 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #9-10 1.88 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #9-14 1.34 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #9-15 0.93 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #9-16 1.89 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #9-17 0.94 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #9-18 1.14 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #9-21 0.85 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #9-22 1.07 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #9-23 1.60 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #8-1 1.11 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #8-2 0.99 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #8-4 0.73 10 865B Section 12-1 Interval 10-12 103.60 55.12 Cement #8-5 1.09 10 865B Section 12-1 Interval 10-12