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Wei, Wuchang; Pospichal, James J (1991): Danian calcareous nannofossils in ODP Hole 119-738C [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.728461, Supplement to: Wei, W; Pospichal, JJ (1991): Danian calcareous nannofossil succession at Site 738 in the Southern Indian Ocean. In: Barron, J; Larsen, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 119, 495-512, https://doi.org/10.2973/odp.proc.sr.119.154.1991

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Abstract:
An apparently complete Danian section was recovered at ODP Site 738 on the southern Kerguelen Plateau. Calcareous nannofossils are abundant and moderately preserved in the section. A number of taxa common in middle or low latitudes, such as Braarudosphaera, Biscutum? romeinii, Biscutum? parvulum, Cyclagelosphaera, Octolithus multiplus, and Toweius petalosus are absent at Site 738. On the other hand, a bloom of Hornibrookina occurs at Site 738 only slightly (15 cm) above the Cretaceous/Tertiary boundary as defined by the iridium peak. Species of Chiasmolithus and Prinsius are very abundant. This gives the nannofossil assemblages distinct high-latitude characteristics and suggests significant latitudinal thermal gradients in the Danian oceans. A Danian nannofossil zonation for the Antarctic region is proposed, which utilizes traditional markers and several nontraditional markers, i.e., the first occurrences of Hornibrookina, Prinsius martinii, and Chiasmolithus bidens, and the last occurrence of Hornibrookina teuriensis. Quantitative analyses of the calcareous nannofossil assemblages from Site 738 reveal four steps of rapid floral changes in the early Danian before relatively stable nannofloral conditions were reached at about 63.8 Ma.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: -62.709000 * Longitude: 82.787800
Date/Time Start: 1988-01-11T18:45:00 * Date/Time End: 1988-01-17T05:00:00
Event(s):
119-738C * Latitude: -62.709000 * Longitude: 82.787800 * Date/Time Start: 1988-01-11T18:45:00 * Date/Time End: 1988-01-17T05:00:00 * Elevation: -2263.0 m * Penetration: 533.8 m * Recovery: 146.03 m * Location: Indian Ocean * Campaign: Leg119 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 35 cores; 337.2 m cored; 0 m drilled; 43.3 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets

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Datasets listed in this publication series

  1. Wei, W; Pospichal, JJ (1991): (Table 2) Distribution of calcareous nannofossils in ODP Hole 119-738C. https://doi.org/10.1594/PANGAEA.728459
  2. Wei, W; Pospichal, JJ (1991): (Appendix) Relative abundance of some calcareous nannofossils in ODP Hole 119-738C. https://doi.org/10.1594/PANGAEA.728460