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Li, Jingfen (2003): Neogene calcareous nannofossil abundance and datums of ODP Site 186-1150 and 186-1151 sediments [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.783092, Supplement to: Li, J (2003): Neogene calcareous nannofossil biostratigraphy and the Coccolithus Pelagicus abundance of ODP Leg 186 Cores from the Japan Trench. In: Suyehiro, K; Sacks, IS; Acton, GD; Oda, M (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 186, 1-31, https://doi.org/10.2973/odp.proc.sr.186.101.2003

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Abstract:
Calcareous nannofossil assemblages were studied from Ocean Drilling Program Holes 1150A, 1150B, 1151A, 1151C, and 1151D in order to estimate the age of sediments drilled in the Japan Trench of the western Pacific Ocean. The abundance and species diversity of nannofossil flora are generally low but are sufficient to show that the sedimentary sequences range from Quaternary to Miocene in age (nannofossil Zones CN15-CN3). The abundance of Coccolithus pelagicus, a cold-water indicator, was studied from sediments younger than 3.83 Ma from both Holes 1150A and 1151A in order to elucidate past climate conditions. Between 3.83 and 2.82 Ma, the abundance of C. pelagicus was generally low, but abundance increased significantly after 2.82 Ma. In agreement with previous studies, this increase appears to be related to a change in the current system around the western Pacific Ocean and eastern Atlantic Ocean that occurred in response to the final elevation of the Isthmus of Panama.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 38.935618 * Median Longitude: 143.333327 * South-bound Latitude: 38.750230 * West-bound Longitude: 143.331910 * North-bound Latitude: 39.181910 * East-bound Longitude: 143.334400
Date/Time Start: 1999-06-22T18:30:00 * Date/Time End: 1999-08-12T23:30:00
Event(s):
186-1150A * Latitude: 39.181910 * Longitude: 143.331910 * Date/Time Start: 1999-06-22T18:30:00 * Date/Time End: 1999-06-26T22:15:00 * Elevation: -2680.8 m * Penetration: 722.6 m * Recovery: 566.4 m * Location: North Pacific Ocean * Campaign: Leg186 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 76 cores; 722.6 m cored; 0 m drilled; 78.4 % recovery
186-1150B * Latitude: 39.181900 * Longitude: 143.332450 * Date/Time Start: 1999-06-26T22:15:00 * Date/Time End: 1999-07-03T13:30:00 * Elevation: -2680.8 m * Penetration: 1181.6 m * Recovery: 269.29 m * Location: North Pacific Ocean * Campaign: Leg186 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 50 cores; 478.3 m cored; 703.3 m drilled; 56.3 % recovery
186-1151A * Latitude: 38.751980 * Longitude: 143.334400 * Date/Time Start: 1999-07-28T22:00:00 * Date/Time End: 1999-08-02T17:45:00 * Elevation: -2182.2 m * Penetration: 1113.6 m * Recovery: 707.6 m * Location: North Pacific Ocean * Campaign: Leg186 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 108 cores; 1035.6 m cored; 0 m drilled; 68.3 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
7 datasets

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Datasets listed in this publication series

  1. Li, J (2003): (Table T2) Nannofossil datums, absolute ages and depths in ODP Site 186-1150 sediments. https://doi.org/10.1594/PANGAEA.783084
  2. Li, J (2003): (Table T3) Neogene calcareous nannofossil biostratigraphy of ODP Hole 186-1150A sediments. https://doi.org/10.1594/PANGAEA.783086
  3. Li, J (2003): (Table T4) Neogene calcareous nannofossil biostratigraphy of ODP Hole 186-1150B sediments. https://doi.org/10.1594/PANGAEA.783087
  4. Li, J (2003): (Table T5) Nannofossil datums, absolute ages and depth in ODP Site 186-1151 sediments. https://doi.org/10.1594/PANGAEA.783088
  5. Li, J (2003): (Table T6) Neogene calcareous nannofossil biostratigraphy of ODP Hole 186-1151A sediments. https://doi.org/10.1594/PANGAEA.783089
  6. Li, J (2003): (Table T7) Neogene calcareous nannofossil biostratigraphy of ODP Hole 186-1151C sediments. https://doi.org/10.1594/PANGAEA.783090
  7. Li, J (2003): (Table T8) Neogene calcareous nannofossil biostratigraphy of ODP Hole 186-1151D sediments. https://doi.org/10.1594/PANGAEA.783091