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Bown, Paul R (1992): Jurassic to Cretaceous calcareous nannofossils from the Argo Abyssal Plain [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.729434, Supplement to: Bown, PR (1992): New calcareous nannofossil taxa from the Jurassic/Cretaceous boundary interval of sites 765 and 261, Argo Abyssal Plain. In: Gradstein, FM; Ludden, JN; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 123, 369-379, https://doi.org/10.2973/odp.proc.sr.123.170.1992

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Abstract:
A summary of calcareous nannofossil biostratigraphy performed for Late Jurassic (Kimmeridgian) to Early Cretaceous (Hauterivian) cores of Site 765 (Cores 123-765C-58R to -55R) and Site 261 (Cores 27-261-33 to -27), Argo Abyssal Plain, off northwestern Australia is presented. Precise age determinations were limited by variable preservation and the exclusion of a number of marker species due to provincialism. However, the presence of species, such as, Stephanolithion bigotii bigotii, Watznaueria manivitae, Tubodiscus verenae, and Cruciellipsis cuvillieri results in a reasonably good degree of biostratigraphic control. Biogeographic interpretation of the nannofossil data suggests that the Argo Basin occupied a position transitional between the Tethyan and Austral nannofloral realms. A cooler water regime is suggested by the absence of thermophyllic Tethyan forms, such as Nannoconus, and the presence of taxa that display bipolar distribution, such as Crucibiscutum salebrosum. Two new species, Zeugrhabdotus cooperi and Cyclagelosphaera argoensis, and one new combination, Haqius ellipticus are described.
Project(s):
Deep Sea Drilling Project (DSDP)
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -14.966400 * Median Longitude: 117.681033 * South-bound Latitude: -15.976000 * West-bound Longitude: 117.575200 * North-bound Latitude: -12.947200 * East-bound Longitude: 117.892700
Date/Time Start: 1972-11-17T00:00:00 * Date/Time End: 1988-09-22T10:30:00
Event(s):
27-261 * Latitude: -12.947200 * Longitude: 117.892700 * Date/Time: 1972-11-17T00:00:00 * Elevation: -5667.0 m * Penetration: 579.5 m * Recovery: 120.5 m * Location: Indian Ocean//PLAIN * Campaign: Leg27 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 36 cores; 323 m cored; 9.5 m drilled; 37.3 % recovery
123-765C * Latitude: -15.976000 * Longitude: 117.575200 * Date/Time Start: 1988-09-11T04:25:00 * Date/Time End: 1988-09-22T10:30:00 * Elevation: -5728.0 m * Penetration: 963.9 m * Recovery: 373.35 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg123 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 65 cores; 613.7 m cored; 0 m drilled; 60.8 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets

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Datasets listed in this publication series

  1. Bown, PR (2009): (Table 3) Stratigraphic distribution of calcareous nannofossils from DSDP Hole 27-261. https://doi.org/10.1594/PANGAEA.729433
  2. Bown, PR (1992): (Table 1) Stratigraphic distribution of calcareous nannofossils from OFP Hole 123-765C. https://doi.org/10.1594/PANGAEA.729396
  3. Bown, PR (1992): (Table 2) Stratigraphic distribution of calcareous nannofossils from OFP Hole 123-765C. https://doi.org/10.1594/PANGAEA.729397