Kheradyar, Tara (1992): Pleistocene planktonic foraminifera at ODP Site 128-798 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.771226, Supplement to: Kheradyar, T (1992): Pleistocene planktonic foraminiferal assemblages and paleotemperature fluctuations in Japan Sea, Site 798. In: Pisciotto, KA; Ingle, JCJr.; von Breymann, MT; Barron, J; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 127/128(1), 457-470, https://doi.org/10.2973/odp.proc.sr.127128-1.149.1992
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
ODP Site 798 on the Oki Ridge in the Southern Japan Sea yielded the first continuous and well-preserved record of Pleistocene planktonic foraminifers in the Northwestern Pacific Ocean region. Quantitative analysis of planktonic foraminifers completed for 122 samples from the 200-m-thick Pleistocene section cored at ODP Site 798 provides a proxy record of variations in sea-surface temperature, productivity, and circulation during the past 1.6 m.y. in an area beneath the track of the Tsushima Current. Faunal census data allow recognition of five distinct assemblages: (1) type A assemblages dominated by sinistrally coiling forms of Neogloboquadrina pachyderma representing polar-subpolar surface temperatures, (2) type B assemblages dominated by Globigerina bulloides and thought to represent periods of increased surface productivity and upwelling, (3) type C assemblages marked by significant abundances of dextrally coiling forms of N. pachyderma thought to represent the warm transitional waters of the Tsushima Current, (4) type D assemblages distinguished by relatively high percentages of dextral N. pachyderma and Globorotalia inflata that also represent warmer surface temperatures and increased flow of the Tsushima Current, and (5) type E assemblages marked by relatively large numbers of the delicate species Globigerina quinqueloba and Globigerinita spp., indicative of exceptional preservation conditions and/or episodic high production of these taxa.
Early and middle Pleistocene coiling patterns of Neogloboquadrina pachyderma at Site 798 can be correlated with Pleistocene coiling trends and planktonic foraminiferal datums established in the onshore Oga Peninsula sequence of Northern Honshu and open-ocean N. pachyderma coiling dominance shifts in the North Pacific region. A sustained early Pleistocene warm period recognized in both the Oga Peninsula sequence and the Northern Pacific can clearly be recognized at Site 798. In addition, the late Pleistocene planktonic foraminiferal record at Site 798 shows good correlation with glaciation/deglaciation events for the Northern Hemisphere as delineated by oxygen isotopes and represents the first detailed analysis of Pleistocene sea-surface temperature changes in the Northwestern Pacific Ocean region.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 37.038417 * Median Longitude: 134.799700 * South-bound Latitude: 37.038300 * West-bound Longitude: 134.799600 * North-bound Latitude: 37.038500 * East-bound Longitude: 134.799800
Date/Time Start: 1989-08-27T00:00:00 * Date/Time End: 1989-08-31T08:00:00
Event(s):
128-798 * Latitude: 37.038433 * Longitude: 134.799700 * Date/Time Start: 1989-08-27T00:00:00 * Date/Time End: 1989-08-31T00:00:00 * Elevation: -912.0 m * Penetration: 781.3 m * Recovery: 794.8 m * Location: Japan Sea * Campaign: Leg128 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 84 cores; 781.3 m cored; 0 m drilled; 101.7% recovery
128-798A * Latitude: 37.038300 * Longitude: 134.799800 * Date/Time Start: 1989-08-27T07:15:00 * Date/Time End: 1989-08-28T10:24:00 * Elevation: -914.0 m * Penetration: 143.3 m * Recovery: 148.27 m * Location: Japan Sea * Campaign: Leg128 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 17 cores; 143.3 m cored; 0 m drilled; 103.5 % recovery
128-798B * Latitude: 37.038500 * Longitude: 134.799600 * Date/Time Start: 1989-08-28T10:24:00 * Date/Time End: 1989-08-31T08:00:00 * Elevation: -911.0 m * Penetration: 517.9 m * Recovery: 514.42 m * Location: Japan Sea * Campaign: Leg128 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 54 cores; 517.9 m cored; 0 m drilled; 99.3 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
Download Data
Datasets listed in this publication series
- Kheradyar, T (1992): (Table 3) Oxygen isotopic stage boundaries established at ODP Site 128-798. https://doi.org/10.1594/PANGAEA.771225
- Kheradyar, T (1992): (Table 1) Pleistocene planktonic foraminiferal assemblages at ODP Site 128-798. https://doi.org/10.1594/PANGAEA.771224