Lees, Jackie A; Bown, Paul R (2005): Calcareous nannofossil biostratigraphy of Cretaceous sediments from ODP Leg 198 sites [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.788572, Supplement to: Lees, JA; Bown, PR (2005): Upper Cretaceous calcareous nannofossil biostratigraphy, ODP Leg 198 (Shatsky Rise, northwest Pacific Ocean). In: Bralower, TJ; Premoli Silva, I; Malone, MJ (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 198, 1-60, https://doi.org/10.2973/odp.proc.sr.198.114.2005
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Abstract:
Eight sites were drilled on Shatsky Rise during Ocean Drilling Program Leg 198. All sites (1207-1214) recovered Cretaceous sediments ranging in age from Maastrichtian to Berriasian. In the Upper Cretaceous, Maastrichtian-Campanian nannofossil oozes were recovered at Sites 1207-1212. At Sites 1207 and 1212 Santonian-Cenomanian oozes were also recovered from chert-dominated sequences, but this interval contains multiple hiatuses. Sites 1209-1211 terminated in chert. Calcareous nannofossil assemblages are abundant, diverse, and relatively well preserved throughout, but biostratigraphy is problematic in places due to missing or rare and sporadically distributed marker species. In the upper Maastrichtian, the first occurrences (FOs) of Micula murus and Lithraphidites quadratus appear to be reversed in most sections, and in the Campanian, Reinhardtites levis, Misceomarginatus pleniporus, and Eiffellithus parallelus are absent or virtually absent, probably due to biogeographic limitations. However, a number of previously unused bioevents were recognized that may prove to be useful Pacific-wide, including the FO of Ceratolithoides ultimus (in Subzone UC20dTP) and the last occurrence (LO) of Tegumentum stradneri (in Subzone UC20bTP) in the upper Maastrichtian; the FOs of Micula praemurus and consistent Cribrocorona gallica, the LOs of Zeugrhabdotus bicrescenticus and Cribrocorona echinus, and the FO of C. echinus lower in the Maastrichtian; and the LO of Rucinolithus? magnus (in Zone UC16), FO of R.? magnus (in Subzone UC15bTP), FO of Perchnielsenella stradneri (in Subzone UC15a/bTP), and FO of Ceratolithoides indiensis (Subzone UC14d-UC15dTP) in the Campanian.
The assemblages are distinctly different in composition from those of the Atlantic Ocean and its marginal basins but show similarities with some Indian Ocean nannofloras, and so these sections will provide important insights into the paleobiogeography and paleoecology of Late Cretaceous nannoplankton. The assemblages are broadly dominated by cosmopolitan taxa such as Prediscosphaera, Watznaueria, and Retecapsa, but abundance data together with key occurrences and absences reveal a distinct paleobiogeographic character. High-latitude species such as Seribiscutum primitivum, Repagulum parvidentatum, and Nephrolithus frequens are completely absent from the Shatsky sites. The common presence of Ceratolithoides, Uniplanarius, Micula, and Cylindralithus/Perchnielsenella are indicative of tropical to subtropical paleolatitudes and reflect an open-ocean setting.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 33.494754 * Median Longitude: 158.804589 * South-bound Latitude: 31.577330 * West-bound Longitude: 157.297660 * North-bound Latitude: 37.790610 * East-bound Longitude: 162.750880
Date/Time Start: 2001-09-05T19:15:00 * Date/Time End: 2001-10-12T01:30:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
12 datasets
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Datasets listed in this publication series
- Lees, JA; Bown, PR (2005): (Table T1) Calcareous nannofossil stratigraphy of ODP Hole 198-1207A. https://doi.org/10.1594/PANGAEA.788560
- Lees, JA; Bown, PR (2005): (Table T2) Calcareous nannofossil stratigraphy of ODP Hole 198-1207B. https://doi.org/10.1594/PANGAEA.788561
- Lees, JA; Bown, PR (2005): (Table T3) Calcareous nannofossil stratigraphy of ODP Hole 198-1208A. https://doi.org/10.1594/PANGAEA.788562
- Lees, JA; Bown, PR (2005): (Table T4) Calcareous nannofossil stratigraphy of ODP Hole 198-1209A. https://doi.org/10.1594/PANGAEA.788563
- Lees, JA; Bown, PR (2005): (Table T5) Calcareous nannofossil stratigraphy of ODP Hole 198-1209C. https://doi.org/10.1594/PANGAEA.788564
- Lees, JA; Bown, PR (2005): (Table T6) Calcareous nannofossil stratigraphy of ODP Hole 198-1210A. https://doi.org/10.1594/PANGAEA.788565
- Lees, JA; Bown, PR (2005): (Table T7) Calcareous nannofossil stratigraphy of ODP Hole 198-1210B. https://doi.org/10.1594/PANGAEA.788566
- Lees, JA; Bown, PR (2005): (Table T8) Calcareous nannofossil stratigraphy of ODP Hole 198-1211A. https://doi.org/10.1594/PANGAEA.788567
- Lees, JA; Bown, PR (2005): (Table T9) Calcareous nannofossil stratigraphy of ODP Hole 198-1211C. https://doi.org/10.1594/PANGAEA.788568
- Lees, JA; Bown, PR (2005): (Table T10) Calcareous nannofossil stratigraphy of ODP Hole 198-1212A. https://doi.org/10.1594/PANGAEA.788569
- Lees, JA; Bown, PR (2005): (Table T11) Calcareous nannofossil stratigraphy of ODP Hole 198-1212B. https://doi.org/10.1594/PANGAEA.788570
- Lees, JA; Bown, PR (2005): (Table T12) Calcareous nannofossil stratigraphy of ODP Hole 198-1213A. https://doi.org/10.1594/PANGAEA.788571