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Akiba, Fumio (1986): Middle Miocene to Quaternary diatoms in the Nankai Trough and Japan Trench [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.817755, Supplement to: Akiba, F (1986): Middle Miocene to Quaternary diatom biostratigraphy in the Nankai Trough and Japan Trench, and modified lower Miocene through Quaternary diatom zones for middle-to-high Latitudes of the North Pacific. In: Kagami, H; Karig, DE; Coulbourn, WT; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 87, 393-481, https://doi.org/10.2973/dsdp.proc.87.106.1986

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Abstract:
During Leg 87 of the Deep Sea Drilling Project, eleven holes were drilled at Sites 582 and 583 in the Nankai Trough, off Shikoku, southwestern Honshu, and three holes at Site 584 in the Japan Trench, off northeastern Honshu, Japan. In the former area, a low-latitude diatom zone called the Pseudoeunotia doliolus Zone is recognized in thick upper Quaternary sediments, which yield rare but characteristic admixtures of marine planktonic, marine tychopelagic-tobenthic, and nonmarine diatoms. In the latter area, all the sediments recovered contain abundant to common diatoms, allowing recognition of 12 continuous diatom zones from upper Quaternary through lower middle Miocene. Three hiatuses occur in this area around the Pleistocene/Pliocene boundary and in the upper and middle Miocene. In addition, 19 modified diatom zones for a lower Miocene through upper Quaternary interval are proposed. These middle-to-highlatitude zones are numerically coded (NPD1-NPD12) and represent the entire North Pacific. The establishment of these zones is based primarily on Leg 87 data and other DSDP materials and partially on several Japanese subaerial sequences. Correlation of the new zonal framework with previously established frameworks is attempted by the evaluation of operational usefulness of previously used datums. Resting spores of Chaetoceros and its related forms are recorded with specific intent for the first time, and possible ramifications of its frequency variation are presented.
Nine new species are proposed: Delphineis sheshukovae Akiba n. sp., Denticulopsis praelauta Akiba and Koizumi n. sp., Kisseleviella ezoensis Akiba n. sp., Nitzschia umaoiensis Akiba n. sp., Thalassiosira jouseae Akiba n. sp., T. praenidulus Akiba n. sp., T. sancettae Akiba n. sp., T. umaoiensis Akiba n. sp., and T. urahoroensis Akiba n. sp. Transfers of systematic positions of the following four taxa are also proposed: Delphineis simonsenii (Mertz) Akiba n. comb., Ikebea tenuis (Brun) Akiba n. comb., Thalassiosira delicata (Barron) Akiba n. stat., and Thalassiothrixrobusta (Schrader) Akiba n. comb.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 40.376764 * Median Longitude: 147.952915 * South-bound Latitude: 31.775000 * West-bound Longitude: 133.854300 * North-bound Latitude: 53.009500 * East-bound Longitude: -161.205500
Date/Time Start: 1971-07-24T00:00:00 * Date/Time End: 1982-08-05T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
11 datasets

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Datasets listed in this publication series

  1. Akiba, F (1986): (Table 11) Stratigraphic occurrence of diatoms in DSDP Hole 19-183. https://doi.org/10.1594/PANGAEA.819211
  2. Akiba, F (1986): (Table 12) Stratigraphic occurrence of diatoms in DSDP Hole 19-192. https://doi.org/10.1594/PANGAEA.819212
  3. Akiba, F (1986): (Table 9) Stratigraphic occurrence of upper Miocene diatoms in DSDP Hole 57-438A. https://doi.org/10.1594/PANGAEA.819209
  4. Akiba, F (1986): (Table 10) Stratigraphic occurrence of diatoms in DSDP Hole 57-439. https://doi.org/10.1594/PANGAEA.819210
  5. Akiba, F (2013): (Table 1) Stratigraphic occurrence of Quaternary diatoms in DSDP Site 87-582. https://doi.org/10.1594/PANGAEA.817718
  6. Akiba, F (1986): (Table 2) Stratigraphic occurrence of upper Quaternary diatoms in DSDP Site 87-583. https://doi.org/10.1594/PANGAEA.817720
  7. Akiba, F (1986): (Table 3) Stratigraphic occurrence of upper Quaternary diatoms in DSDP Site 87-583. https://doi.org/10.1594/PANGAEA.817721
  8. Akiba, F (1986): (Table 5) Stratigraphic occurrence of Quaternary diatoms in DSDP Site 87-584. https://doi.org/10.1594/PANGAEA.817722
  9. Akiba, F (1986): (Table 6) Stratigraphic occurrence of upper Miocene to lower Pliocene diatoms in DSDP Hole 87-584. https://doi.org/10.1594/PANGAEA.817752
  10. Akiba, F (1986): (Table 7) Stratigraphic occurrence of upper Miocene diatoms in DSDP Hole 87-584. https://doi.org/10.1594/PANGAEA.817753
  11. Akiba, F (1986): (Table 8) Stratigraphic occurrence of diatoms in DSDP Site 87-584. https://doi.org/10.1594/PANGAEA.817754