High-resolution and high-precision correlation of dark and light layers in the Quaternary hemipelagic sediments of the Japan Sea recovered during IODP Expedition 346 - Université de Montpellier Accéder directement au contenu
Article Dans Une Revue Progress in Earth and Planetary Science Année : 2018

High-resolution and high-precision correlation of dark and light layers in the Quaternary hemipelagic sediments of the Japan Sea recovered during IODP Expedition 346

Akinori Karasuda
  • Fonction : Auteur
Saiko Sugisaki
  • Fonction : Auteur
Chuang Xuan
  • Fonction : Auteur
Takuya Sagawa
  • Fonction : Auteur
Takuya Itaki
  • Fonction : Auteur
Song Lu
  • Fonction : Auteur
Arisa Seki
  • Fonction : Auteur
Carlos Alvarez-Zarikian
  • Fonction : Auteur
William T Anderson
  • Fonction : Auteur
Bobbi J Brace
  • Fonction : Auteur
Marcio H da Costa Gurgel
  • Fonction : Auteur
Gerald R Dickens
  • Fonction : Auteur
Ann G Dunlea
  • Fonction : Auteur
Stephen J Gallagher
  • Fonction : Auteur
Andrew C G Henderson
  • Fonction : Auteur
Ann E Holbourn
Christopher W Kinsley
  • Fonction : Auteur
Gwang Soo Lee
  • Fonction : Auteur
Kyung Eun Lee
  • Fonction : Auteur
Johanna Lofi
Christina I C D Lopes
  • Fonction : Auteur
Mariem Saavedra-Pellitero
  • Fonction : Auteur
Larry C Peterson
  • Fonction : Auteur
Hongbo Zheng
  • Fonction : Auteur
Martin Ziegler
  • Fonction : Auteur
  • PersonId : 945585

Résumé

The Quaternary hemipelagic sediments of the Japan Sea are characterized by centimeter-to decimeter-scale alternation of dark and light clay to silty clay, which are bio-siliceous and/or bio-calcareous to a various degree. Each of the dark and light layers are considered as deposited synchronously throughout the deeper (> 500 m) part of the sea. However, attempts for correlation and age estimation of individual layers are limited to the upper few tens of meters. In addition, the exact timing of the depositional onset of these dark and light layers and its synchronicity throughout the deeper part of the sea have not been explored previously, although the onset timing was roughly estimated as ~ 1.5 Ma based on the result of Ocean Drilling Program legs 127/128. Consequently, it is not certain exactly when their deposition started, whether deposition of dark and light layers was synchronous and whether they are correlatable also in the earlier part of their depositional history. The Quaternary hemipelagic sediments of the Japan Sea were drilled at seven sites during Integrated Ocean Drilling Program Expedition 346 in 2013. Alternation of dark and light layers was recovered at six sites whose water depths are > ~ 900 m, and continuous composite columns were constructed at each site. Here, we report our effort to correlate individual dark layers and estimate their ages based on a newly constructed age model at Site U1424 using the best available paleomagnetic datum and marker tephras. The age model is further tuned to LR04 δ 18 O curve using gamma ray attenuation density (GRA) since it reflects diatom contents that are higher during interglacial high-stands. The constructed age model for Site U1424 is projected to other sites using correlation of dark layers to form a high-resolution and high-precision paleo-observatory network that allows to reconstruct changes in material fluxes with high spatio-temporal resolutions.
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Dates et versions

hal-01823811 , version 1 (26-06-2018)

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Ryuji Tada, Tomohisa Irino, Ken Ikehara, Akinori Karasuda, Saiko Sugisaki, et al.. High-resolution and high-precision correlation of dark and light layers in the Quaternary hemipelagic sediments of the Japan Sea recovered during IODP Expedition 346. Progress in Earth and Planetary Science, 2018, 5 (1), ⟨10.1186/s40645-018-0167-8⟩. ⟨hal-01823811⟩
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