GLORIA

GEOMAR Library Ocean Research Information Access

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 114-698; 114-699; 114-700; 114-702; 145-883; 145-884; 171-1051A; 171-1051B; 171-1052A; 171-1052B; 171-1052C; 171-1052F; Blake Nose, North Atlantic Ocean; COMPCORE; Composite Core; DRILL; Drilling/drill rig; Joides Resolution; Leg114; Leg145; Leg171B; North Pacific Ocean; Ocean Drilling Program; ODP; South Atlantic Ocean  (1)
Document type
Keywords
Publisher
Years
  • 1
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: Katz, Miriam E; Katz, David R; Wright, James D; Miller, Kenneth G; Pak, Dorothy K; Shackleton, Nicholas J; Thomas, Ellen (2003): Early Cenozoic benthic foraminiferal isotopes: Species reliability and interspecies correction factors. Paleoceanography, 18(2), 1024, https://doi.org/10.1029/2002PA000798
    Publication Date: 2024-07-19
    Description: Oxygen and carbon isotope records are important tools used to reconstruct past ocean and climate conditions, with those of benthic foraminifera providing information on the deep oceans. Reconstructions are complicated by interspecies isotopic offsets that result from microhabitat preferences (carbonate precipitation in isotopically distinct environments) and vital effects (species-specific metabolic variation in isotopic fractionation). We provide correction factors for early Cenozoic benthic foraminifera commonly used for isotopic measurements (Cibicidoides spp., Nuttallides truempyi, Oridorsalis spp., Stensioina beccariiformis, Hanzawaia ammophila, and Bulimina spp.), showing that most yield reliable isotopic proxies of environmental change. The statistical methods and larger data sets used in this study provide more robust correction factors than do previous studies. Interspecies isotopic offsets appear to have changed through the Cenozoic, either (1) as a result of evolutionary changes or (2) as an artifact of different statistical methods and data set sizes used to determine the offsets in different studies. Regardless of the reason, the assumption that isotopic offsets have remained constant through the Cenozoic has introduced an 1-2°C uncertainty into deep sea paleotemperature calculations. In addition, we compare multiple species isotopic data from a western North Atlantic section that includes the Paleocene-Eocene thermal maximum to determine the most reliable isotopic indicator for this event. We propose that Oridorsalis spp. was the most reliable deepwater isotopic recorder at this location because it was best able to withstand the harsh water conditions that existed at this time; it may be the best recorder at other locations and for other extreme events also.
    Keywords: 114-698; 114-699; 114-700; 114-702; 145-883; 145-884; 171-1051A; 171-1051B; 171-1052A; 171-1052B; 171-1052C; 171-1052F; Blake Nose, North Atlantic Ocean; COMPCORE; Composite Core; DRILL; Drilling/drill rig; Joides Resolution; Leg114; Leg145; Leg171B; North Pacific Ocean; Ocean Drilling Program; ODP; South Atlantic Ocean
    Type: dataset publication series
    Format: application/zip, 12 datasets
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...