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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

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
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

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 δ18O 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. [Figure not available: see fulltext.].

Expedition 346, High-resolution age model, Inter-site correlation, IODP, Japan Sea, Quaternary sediments, U1424, U1425, U1426, U1430
2197-4284
Tada, Ryuji
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Irino, Tomohisa
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Ikehara, Ken
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Karasuda, Akinori
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Sugisaki, Saiko
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Xuan, Chuang
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Sagawa, Takuya
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Itaki, Takuya
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Kubota, Yoshimi
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Lu, Song
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Seki, Arisa
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Murray, Richard W.
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Alvarez-Zarikian, Carlos
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Anderson, William T.
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Bassetti, Maria Angela
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Brace, Bobbi J.
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Clemens, Steven C.
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da Costa Gurgel, Marcio H.
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Dickens, Gerald R.
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Dunlea, Ann G.
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Gallagher, Stephen J.
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Giosan, Liviu
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Henderson, Andrew C.G.
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Holbourn, Ann E.
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Kinsley, Christopher W.
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Lee, Gwang Soo
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Lee, Kyung Eun
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Lofi, Johanna
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Lopes, Christina I.C.D.
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Saavedra-Pellitero, Mariem
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Peterson, Larry C.
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Singh, Raj K.
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Toucanne, Samuel
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Wan, Shiming
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Zheng, Hongbo
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Ziegler, Martin
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Tada, Ryuji
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Irino, Tomohisa
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Ikehara, Ken
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Karasuda, Akinori
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Sugisaki, Saiko
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Xuan, Chuang
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Sagawa, Takuya
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Itaki, Takuya
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Kubota, Yoshimi
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Lu, Song
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Seki, Arisa
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Murray, Richard W.
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Alvarez-Zarikian, Carlos
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Anderson, William T.
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Bassetti, Maria Angela
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Brace, Bobbi J.
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Clemens, Steven C.
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da Costa Gurgel, Marcio H.
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Dickens, Gerald R.
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Dunlea, Ann G.
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Gallagher, Stephen J.
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Giosan, Liviu
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Henderson, Andrew C.G.
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Holbourn, Ann E.
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Kinsley, Christopher W.
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Lee, Gwang Soo
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Lee, Kyung Eun
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Lofi, Johanna
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Lopes, Christina I.C.D.
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Saavedra-Pellitero, Mariem
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Peterson, Larry C.
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Singh, Raj K.
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Toucanne, Samuel
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Wan, Shiming
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Zheng, Hongbo
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Ziegler, Martin
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Tada, Ryuji, Irino, Tomohisa, Ikehara, Ken, Karasuda, Akinori, Sugisaki, Saiko, Xuan, Chuang, Sagawa, Takuya, Itaki, Takuya, Kubota, Yoshimi, Lu, Song, Seki, Arisa, Murray, Richard W., Alvarez-Zarikian, Carlos, Anderson, William T., Bassetti, Maria Angela, Brace, Bobbi J., Clemens, Steven C., da Costa Gurgel, Marcio H., Dickens, Gerald R., Dunlea, Ann G., Gallagher, Stephen J., Giosan, Liviu, Henderson, Andrew C.G., Holbourn, Ann E., Kinsley, Christopher W., Lee, Gwang Soo, Lee, Kyung Eun, Lofi, Johanna, Lopes, Christina I.C.D., Saavedra-Pellitero, Mariem, Peterson, Larry C., Singh, Raj K., Toucanne, Samuel, Wan, Shiming, Zheng, Hongbo and Ziegler, Martin (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. Progress in Earth and Planetary Science, 5 (1), [19]. (doi:10.1186/s40645-018-0167-8).

Record type: Article

Abstract

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 δ18O 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. [Figure not available: see fulltext.].

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Accepted/In Press date: 21 November 2017
e-pub ahead of print date: 26 March 2018
Published date: 1 December 2018
Keywords: Expedition 346, High-resolution age model, Inter-site correlation, IODP, Japan Sea, Quaternary sediments, U1424, U1425, U1426, U1430

Identifiers

Local EPrints ID: 421388
URI: http://eprints.soton.ac.uk/id/eprint/421388
ISSN: 2197-4284
PURE UUID: 80aad240-bfc5-48e8-b855-63241052e207
ORCID for Chuang Xuan: ORCID iD orcid.org/0000-0003-4043-3073

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Date deposited: 07 Jun 2018 16:30
Last modified: 06 Jun 2024 01:52

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Contributors

Author: Ryuji Tada
Author: Tomohisa Irino
Author: Ken Ikehara
Author: Akinori Karasuda
Author: Saiko Sugisaki
Author: Chuang Xuan ORCID iD
Author: Takuya Sagawa
Author: Takuya Itaki
Author: Yoshimi Kubota
Author: Song Lu
Author: Arisa Seki
Author: Richard W. Murray
Author: Carlos Alvarez-Zarikian
Author: William T. Anderson
Author: Maria Angela Bassetti
Author: Bobbi J. Brace
Author: Steven C. Clemens
Author: Marcio H. da Costa Gurgel
Author: Gerald R. Dickens
Author: Ann G. Dunlea
Author: Stephen J. Gallagher
Author: Liviu Giosan
Author: Andrew C.G. Henderson
Author: Ann E. Holbourn
Author: Christopher W. Kinsley
Author: Gwang Soo Lee
Author: Kyung Eun Lee
Author: Johanna Lofi
Author: Christina I.C.D. Lopes
Author: Mariem Saavedra-Pellitero
Author: Larry C. Peterson
Author: Raj K. Singh
Author: Samuel Toucanne
Author: Shiming Wan
Author: Hongbo Zheng
Author: Martin Ziegler

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