Kozdon, Reinhard; Kelly, Daniel Clay (2024): d13C values measured by Secondary Ion Mass Spectrometry in shells of the planktic foraminifer Morozovella allisonensis from the PETM section of ODP Site 865 (Central Pacific) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.967641
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Published: 2024-05-15 • DOI registered: 2024-06-13
Abstract:
Foraminiferal shells of the species M. allisonensis from the PETM section of ODP Site 865, Central Pacific, were cast with 3 grains of UWC-3 calcite standard (Kozdon et al., 2009) in the center of a 25 mm round epoxy mount, ground to the level of best exposure, polished, cleaned, and Au-coated. Prior to geochemical analysis, shells were examined by Scanning Electron Microscopy (SEM) to identify subdomains suitable for in-situ d13C and Mg/Ca ratio measurements and to avoid diagenetically altered zones within each shell. In-situ d13C measurements were performed with ~7 µm beam spot size in the WiscSIMS Laboratory at UW-Madison by a CAMECA ims-1280 large radius multicollector ion microprobe) using the protocols described in a previous study (Kozdon et al., 2018). The in-situ d13C microanalyses primarily targeted subdomains located at the base of pustular outgrowths (muricae) along the chamber walls of each shell. Previous studies have shown that these subdomains are less susceptible to post-depositional alteration than the rest of the shell (Kozdon et al., 2011; Kozdon et al., 2013). Between one and five SIMS d13C microanalyses were performed for each shell. Reproducibility of the individual spot analysis of UWC-3 standard (d13C = -0.91‰ V-PDB, Kozdon et al., 2011) bracketing samples is on average 0.7‰ (± 2 SD).
Related to:
Kozdon, Reinhard; Kelly, Daniel Clay (in review): Hot tropical temperatures during the Paleocene-Eocene thermal maximum revealed by paired in-situ d13C and Mg/Ca measurements on individual planktic foraminifer shells.
References:
Kozdon, Reinhard; Kelly, Daniel Clay; Kita, Noriko T; Fournelle, John H; Valley, John W (2011): Planktonic foraminiferal oxygen isotope analysis by ion microprobe technique suggests warm tropical sea surface temperatures during the Early Paleogene. Paleoceanography, 26(3), PA3206, https://doi.org/10.1029/2010PA002056
Kozdon, Reinhard; Kelly, Daniel Clay; Kitajima, K; Strickland, A; Fournelle, John H; Valley, John W (2013): 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|. Paleoceanography, 28(3), 517-528, https://doi.org/10.1002/palo.20048
Kozdon, Reinhard; Kelly, Daniel Clay; Valley, John W (2018): Diagenetic Attenuation of Carbon Isotope Excursion Recorded by Planktic Foraminifers During the Paleocene‐Eocene Thermal Maximum. Paleoceanography and Paleoclimatology, 33(4), 367-380, https://doi.org/10.1002/2017PA003314
Kozdon, Reinhard; Ushikubo, Takayuki; Kita, Noriko T; Spicuzza, Michael J; Valley, John W (2009): Intratest oxygen isotope variability in the planktonic foraminifer N. pachyderma: Real vs. apparent vital effects by ion microprobe. Chemical Geology, 258(3-4), 327-337, https://doi.org/10.1016/j.chemgeo.2008.10.032
Funding:
National Science Foundation (NSF), grant/award no. 1405224: Reconciling substrate specific differences in the carbon isotope excursion marking the Paleocene-Eocene thermal maximum
National Science Foundation (NSF), grant/award no. 2004618: Facility Support: The WiscSIMS National Ion Microprobe
Coverage:
Latitude: 18.440400 * Longitude: -179.555000
Date/Time Start: 1992-04-04T01:30:00 * Date/Time End: 1992-04-04T14:15:00
Minimum DEPTH, sediment/rock: 102.9 m * Maximum DEPTH, sediment/rock: 103.0 m
Event(s):
143-865C * Latitude: 18.440400 * Longitude: -179.555000 * Date/Time Start: 1992-04-04T01:30:00 * Date/Time End: 1992-04-04T14:15:00 * Elevation: -1528.0 m * Penetration: 136.3 m * Recovery: 114.11 m * Location: North Pacific Ocean * Campaign: Leg143 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 15 cores; 136.3 m cored; 0 m drilled; 83.7 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Kozdon, Reinhard | |||
| 2 | Sample code/label | Sample label | Kozdon, Reinhard | DSDP/ODP/IODP sample designation | ||
| 3 | Hole | H | Kozdon, Reinhard | Hole/core | ||
| 4 | Section | Sect | Kozdon, Reinhard | |||
| 5 | Interval | Interval | Kozdon, Reinhard | cm | ||
| 6 | DEPTH, sediment/rock | Depth sed | m | Kozdon, Reinhard | Geocode – mbsf | |
| 7 | Identification | ID | Kozdon, Reinhard | Shell # | ||
| 8 | Size fraction | Size fraction | Kozdon, Reinhard | µm | ||
| 9 | Morozovella allisonensis, δ13C | M. allisonensis δ13C | ‰ PDB | Kozdon, Reinhard | Large radius multicollector ion microprobe, CAMECA, ims-1280 | vs. V-PDB |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
35 data points