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Bornemann, André; Norris, Richard D (2007): Size-related stable isotope changes in Late Cretaceous and Recent planktic foraminifera from the western tropical Atlantic [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.688711, Supplement to: Bornemann, A; Norris, RD (2007): Size-related stable isotope changes in Late Cretaceous planktic foraminifera: Implications for paleoecology and photosymbiosis. Marine Micropaleontology, 65(1-2), 32-42, https://doi.org/10.1016/j.marmicro.2007.05.005

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Abstract:
The paleoecology of Cretaceous planktic foraminifera during the Late Cenomanian to Coniacian period (~95-86 Ma) remains controversial since much of the tropical marine record is preserved as chalk and limestone with uncertain geochemical overprints. Here we present delta13C and delta18O data from sieve size fractions of monospecific samples of exceptionally well preserved planktic foraminifera recovered during Ocean Drilling Program Leg 207 (Demerara Rise, western tropical Atlantic). Our results suggest that all species studied (Hedbergella delrioensis, Heterohelix globulosa, Marginotruncana sinuosa, Whiteinella baltica) grew primarily in surface waters and did not change their depth habitat substantially during their life cycle. Comparison of size-related ontogenetic trends in delta13C in Cretaceous and modern foraminifera further suggests that detection of dinoflagellate photosymbiosis using delta13C is confounded by physiological effects during the early stages of foraminifer growth, raising doubts about previous interpretations of photosymbiosis in small foraminifera species. We propose that obligate photosymbiosis involving dinoflagellates may not have evolved until the Campanian or Maastrichtian since our survey of Cenomanian-Coniacian species does not find the delta18O and delta13C size-related trends observed in modern foraminifer-dinoflagellate symbioses.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 12.063508 * Median Longitude: -57.885325 * South-bound Latitude: 2.500000 * West-bound Longitude: -78.000000 * North-bound Latitude: 27.000000 * East-bound Longitude: -45.000000
Date/Time Start: 2003-01-15T00:00:00 * Date/Time End: 2003-02-16T00:00:00
Event(s):
207-1257 * Latitude: 9.453633 * Longitude: -54.341783 * Date/Time Start: 2003-01-15T00:00:00 * Date/Time End: 2003-01-22T00:00:00 * Elevation: -2951.0 m * Penetration: 747.9 m * Recovery: 428.9 m * Location: South Atlantic Ocean * Campaign: Leg207 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 74 cores; 625.9 m cored; 122 m drilled; 68.5 % recovery
207-1259 * Latitude: 9.300400 * Longitude: -54.199517 * Date/Time Start: 2003-02-01T00:00:00 * Date/Time End: 2003-02-16T00:00:00 * Elevation: -2354.5 m * Penetration: 1668.7 m * Recovery: 644.9 m * Location: South Atlantic Ocean * Campaign: Leg207 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 104 cores; 929.6 m cored; 739.1 m drilled; 69.4 % recovery
BC061 * Latitude: 27.000000 * Longitude: -78.000000 * Location: Little Bahama Bank * Method/Device: Box corer (BC) * Comment: Position is an estimation from map
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
4 datasets

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Datasets listed in this publication series

  1. Bornemann, A; Norris, RD (2007): (Appendix A) Stable carbon and oxygen isotope ratios of Cretaceous planktic foraminifera of ODP Site 207-1257 from the Demerara Rise in the western equatorial Atlantic. https://doi.org/10.1594/PANGAEA.688707
  2. Bornemann, A; Norris, RD (2007): (Appendix A) Stable carbon and oxygen isotope ratios of Cretaceous planktic foraminifera of ODP Site 207-1259 from the Demerara Rise in the western equatorial Atlantic. https://doi.org/10.1594/PANGAEA.688708
  3. Bornemann, A; Norris, RD (2007): (Appendix A) Stable carbon and oxygen isotope ratios of Recent planktic foraminifera from the Little Bahama Bank, western Atlantic. https://doi.org/10.1594/PANGAEA.688709
  4. Bornemann, A; Norris, RD (2007): (Appendix A) Stable carbon and oxygen isotope ratios of Recent planktic foraminifera from the Ceara Rise in the western equatorial Atlantic. https://doi.org/10.1594/PANGAEA.688710