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Kamikuri, Shin-Ichi; Matsuzaki, Kenji M: Paleoceanographic data based on radiolarian assemblages since the late Miocene from the western tropical Indian Ocean at ODP Site 115-710 [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.977787 (dataset in review)

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Abstract:
We present radiolarian assemblages data since the late Miocene (~10-0 Ma) at Ocean Drilling Program Site 710 (4°18.7'S and 60°58.8'E; water depth, 3812 m) in the western tropical Indian Ocean for reconstructing the history of Sea Surface temperature (SST), Indonesian Throughflow (ITF), biological productivity, and Antarctic Intermediate Water (AAIW). A total of 99 sediment samples were used to characterize radiolarian assemblages in this study. The geomagnetic time scale was adopted from the Geologic Time Scale 2020 (Gradstein et al., 2020) to estimate the age of each sample. Here radiolarian percentages data and radiolarian based paleoceanographic data (SST, ITF, biological productivity, and AAIW) from Site 710 are uploaded. The SST were estimated based on extant radiolarian species using the equation of Matsuzaki et al. (2020, Geology). To monitor ITF changes, the relative abundances of five taxa (Zygocircus spp., Botryostrobus scutum, Didymocyrtis tetrathalamus, Dictyocoryne spp., and the collodaria group) were used in this study. To trace biological productivity, we used the WADE index of Lazarus et al. (2006, Marine Micropaleontology). However, note that our study modifies the original WADE index by inverting the ratio for ease of interpretation. To monitor AAIW changes, the relative abundances of Cycladophora bicornis, Lithelius haeckelispiralis, and Larcopyle weddellium were used in this study.
Keyword(s):
Antarctic Intermediate Water; biological productivity; Indonesian Throughflow; ODP Site 710; Radiolarian key species; Sea surface temperature
Supplement to:
Kamikuri, Shin-Ichi; Matsuzaki, Kenji M (submitted): Changes in the Indonesian Throughflow since the late Miocene based on radiolarian assemblages from ODP Site 710 in the western tropical Indian Ocean: Response to the Indo-Pacific Gateway. Paleoceanography and Paleoclimatology
References:
Lazarus, David B; Bittniok, Beatrice; Diester-Haass, Lieselotte; Meyers, Philip A; Billups, Katharina (2006): Comparison of radiolarian and sedimentologic paleoproductivity proxies in the latest Miocene-Recent Benguela Upwelling System. Marine Micropaleontology, 60(4), 269-294, https://doi.org/10.1016/j.marmicro.2006.06.003
Matsuzaki, Kenji M; Suzuki, Noritoshi; Tada, Ryuji (2020): An intensified East Asian winter monsoon in the Japan Sea between 7.9 and 6.6 Ma. Geology, 48(9), 919-923, https://doi.org/10.1130/G47393.1
Schneider, David A; Kent, Dennis V (1990): Paleomagnetism of Leg 115 sediments: implications for Neogene magnetostratigraphy and paleolatitude of the Réunion Hotspot. In: Duncan, RA; Backmann, J; Peterson, LC; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 115, 717-736, https://doi.org/10.2973/odp.proc.sr.115.197.1990
Funding:
Japan Society for the Promotion of Science (JSPS), grant/award no. 22K03791: Analysis of spatial and temporal variations in marine biodiversity throughout the Neogene based on microfossils
Japan Society for the Promotion of Science (JSPS), grant/award no. 23K03559: Impact of the Tsushima Current on the Sea of Japan paleooceanography and ecosystems in during climate phases warmer than today
Coverage:
Latitude: -4.311700 * Longitude: 60.980000
Date/Time Start: 1987-06-08T20:45:00 * Date/Time End: 1987-06-10T15:00:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Size:
2 datasets

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Datasets listed in this bundled publication

  1. Kamikuri, S-I; Matsuzaki, KM (in review): Age model of ODP Site 115-710 from the western tropical Indian Ocean. https://doi.pangaea.de/10.1594/PANGAEA.977647
  2. Kamikuri, S-I; Matsuzaki, KM (in review): Paleoceanographic changes based on radiolarians of ODP Site 115-710 from the western tropical Indian Ocean. https://doi.pangaea.de/10.1594/PANGAEA.977772