Stratigraphy and major paleoenvironmental changes in the Sea of Okhotsk during the last million years inferred from radiolarian data

Matul, A. G.; Abelmann, Andrea; Nürnberg, Dirk; Tiedemann, Ralf

doi:10.1134/s0001437009010111

Cited by 27 publications

(13 citation statements)

References 25 publications

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“…In the Sea of Okhotsk, this event occurs during MIS 9 (287 ka) (Matul et al 2002) or MIS 8c (272 ka) (Matul et al 2009). The depth of this event at Site U1427 is between 112.05 and 112.77 m, which is prior to the Aso-1 tephra (272 ka) and the peak of subtropical species at MIS 9a (285 ka).…”

Section: Correlation Of Sites U1427 and U1429mentioning

confidence: 99%

Integrated tephrostratigraphy and stable isotope stratigraphy in the Japan Sea and East China Sea using IODP Sites U1426, U1427, and U1429, Expedition 346 Asian Monsoon

Sagawa

Nagahashi

Satoguchi

et al. 2018

Prog Earth Planet Sci

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Integrated Ocean Drilling Program Expedition 346 "Asian Monsoon" obtained sediment successions at seven sites in the Japan Sea (Sites U1422-U1427 and U1430) and at two closely located sites in the northern East China Sea (Sites U1428 and U1429). The Quaternary sediments of the Japan Sea are characterized by centimeter-to decimeter-scale dark-light alternations at all sites deeper than 500 m water depth. The sedimentary records from these sites allow an investigation of the regional environmental response to global climate change, including changes in the Asian Monsoon and eustatic sea level. However, the discontinuous occurrence of calcareous microfossils in the deep-sea sediments and their distinct isotope signature that deviates from standard marine δ 18 O records do not permit the development of a detailed stable isotope stratigraphy for Japan Sea sediments. Here, we present the tephrostratigraphy for the two southernmost sites drilled in the Japan Sea (Sites U1426 and U1427) and for one site drilled in the East China Sea (Site U1429) along with the benthic δ 18 O isotope stratigraphy for the shallower Site U1427 and the East China Sea Site U1429. Eighteen tephra layers can be correlated between sites using the majorelement composition and morphology of volcanic glass shards, and the compositions of grains and heavy minerals. Tephra correlations show that negative δ 18 O peaks in the Japan Sea correspond to positive glacial maxima peaks in the East China Sea. Using this integrated stratigraphic approach, we establish an orbital-scale age model at Site U1427 for the past 1.1 Myr. The correlation of tephra layers between the shallower Site U1427 (330 m below sea level: mbsl) and the deeper Site U1426 (903 mbsl) in the southern Japan Sea provides the opportunity for further age constraints. Our results show that alternations in sediment color at Sites U1426 and U1427 can be correlated for the past 1.1 Myr with minor exceptions. Thus, the stable isotope stratigraphy established at the shallower Site U1427 can be correlated to Site U1426, and in turn to all sites drilled during Expedition 346, based on correlations of dark-light layering.

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Section: Correlation Of Sites U1427 and U1429mentioning

confidence: 99%

Integrated tephrostratigraphy and stable isotope stratigraphy in the Japan Sea and East China Sea using IODP Sites U1426, U1427, and U1429, Expedition 346 Asian Monsoon

Sagawa

Nagahashi

Satoguchi

et al. 2018

Prog Earth Planet Sci

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“…in the North Pacific Ocean (Ling 1975;Sakai, 1980), the Bering Sea (Ling, 1973;Ikenoue et al, 2016), and the Sea of Okhotsk (Matul et al, 2002). In the Sea of Okhotsk, this datum has been found in MIS 9 (0.29 Ma) (Matul et al, 2002) or MIS 8.5 (0.27 Ma) (Matul et al, 2009).…”

Section: Datum Levelsmentioning

confidence: 91%

Data report: Pleistocene radiolarian biostratigraphy, IODP Expedition 346 Site U1427

Itaki¹,

Sagawa²,

Kubota³

2018

Proceedings of the IODP

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Quantitative analysis of radiolarian assemblages was conducted on sediment cores collected from the seafloor during Integrated Ocean Drilling Program Expedition 346. During Expedition 346, Site U1427 was cored in the shelf region of the Yamato Basin, southern Japan Sea, to 570 m core composite depth below seafloor (CCSF-A) in Hole U1427A. Radiolarian biostratigraphy conducted for this site identified four datum levels: last occurrence (LO) of Lychnocanomma sakaii (0.054 Ma), LO of Amphimelissa setosa (0.085 Ma), LO of Schizodiscus japonicus (0.29 Ma), and first occurrence (FO) of Amphimelissa setosa (~1.48 Ma). In addition, the abundance maxima of subtropical water species, which indicate migration of the Tsushima Warm Current from the East China Sea associated with eustatic sea level rise during interglacial periods, are most likely correlated with the marine isotope stages during the past 1.5 My.

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“…al., 2002;Okazaki et al, 2003aOkazaki et al, , 2003bOkazaki et al, , 2005Itaki et al, 2008;Matul et al 2009Matul et al , 2013Bubenshchikova, 2010;and others).…”

Section: Introductionmentioning

confidence: 97%

Radiolarian responses of the central Okhotsk Sea to the global orbital and millennial scale climate oscillations over last 90kyr

Yanchenko

Gorbarenko

2015

Journal of Asian Earth Sciences

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Stratigraphy and major paleoenvironmental changes in the Sea of Okhotsk during the last million years inferred from radiolarian data

Cited by 27 publications

References 25 publications

Integrated tephrostratigraphy and stable isotope stratigraphy in the Japan Sea and East China Sea using IODP Sites U1426, U1427, and U1429, Expedition 346 Asian Monsoon

Integrated tephrostratigraphy and stable isotope stratigraphy in the Japan Sea and East China Sea using IODP Sites U1426, U1427, and U1429, Expedition 346 Asian Monsoon

Data report: Pleistocene radiolarian biostratigraphy, IODP Expedition 346 Site U1427

Radiolarian responses of the central Okhotsk Sea to the global orbital and millennial scale climate oscillations over last 90kyr

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