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dc.contributor.authorTada, Ryuji  Concept link
dc.contributor.authorIrino, Tomohisa  Concept link
dc.contributor.authorIkehara, Ken  Concept link
dc.contributor.authorKarasuda, Akinori  Concept link
dc.contributor.authorSugisaki, Saiko  Concept link
dc.contributor.authorXuan, Chuang  Concept link
dc.contributor.authorSagawa, Takuya  Concept link
dc.contributor.authorItaki, Takuya  Concept link
dc.contributor.authorKubota, Yoshimi  Concept link
dc.contributor.authorLu, Song  Concept link
dc.contributor.authorSeki, Arisa  Concept link
dc.contributor.authorMurray, Richard W.  Concept link
dc.contributor.authorAlvarez-Zarikian, Carlos A.  Concept link
dc.contributor.authorAnderson, William T.  Concept link
dc.contributor.authorBassetti, Maria-Angela  Concept link
dc.contributor.authorBrace, Bobbi J.  Concept link
dc.contributor.authorClemens, Steven C.  Concept link
dc.contributor.authorda Costa Gurgel, Marcio H.  Concept link
dc.contributor.authorDickens, Gerald R.  Concept link
dc.contributor.authorDunlea, Ann G.  Concept link
dc.contributor.authorGallagher, Stephen J.  Concept link
dc.contributor.authorGiosan, Liviu  Concept link
dc.contributor.authorHenderson, Andrew C. G.  Concept link
dc.contributor.authorHolbourn, Ann E.  Concept link
dc.contributor.authorKinsley, Christopher W.  Concept link
dc.contributor.authorLee, Gwang Soo  Concept link
dc.contributor.authorLee, Kyung Eun  Concept link
dc.contributor.authorLofi, Johanna  Concept link
dc.contributor.authorLopes, Christina I. C. D.  Concept link
dc.contributor.authorSaavedra-Pellitero, Mariem  Concept link
dc.contributor.authorPeterson, Larry C.  Concept link
dc.contributor.authorSingh, Raj K.  Concept link
dc.contributor.authorToucanne, Samuel  Concept link
dc.contributor.authorWan, Shiming  Concept link
dc.contributor.authorZheng, Hongbo  Concept link
dc.contributor.authorZiegler, Martin  Concept link
dc.identifier.citationProgress in Earth and Planetary Science 5 (2018): 19en_US
dc.description© The Author(s), 2018. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Progress in Earth and Planetary Science 5 (2018): 19, doi:10.1186/s40645-018-0167-8.en_US
dc.description.abstractThe 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.en_US
dc.description.sponsorshipThis work was supported by a grant from IODP Exp. 346 After Cruise Research Program, JAMSTEC, awarded to TR, IK, Irino T, Itaki T, ST, KY, SS, and KA and from JSPS KAKENHI grant number 16H01765 awarded to TR.en_US
dc.rightsAttribution 4.0 International*
dc.subjectQuaternary sedimentsen_US
dc.subjectJapan Seaen_US
dc.subjectInter-site correlationen_US
dc.subjectHigh-resolution age modelen_US
dc.subjectExpedition 346en_US
dc.titleHigh-resolution and high-precision correlation of dark and light layers in the Quaternary hemipelagic sediments of the Japan Sea recovered during IODP Expedition 346en_US

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Attribution 4.0 International
Except where otherwise noted, this item's license is described as Attribution 4.0 International