Sediment fabrics, oxygenation history, and circulation modes of Japan Sea during the Late Quaternary

Watanabe, Shiro; Tada, Ryuji; Ikehara, Ken; Fujine, Kazuho; Kido, Yasumasa

doi:10.1016/j.palaeo.2006.11.021

Cited by 80 publications

(87 citation statements)

References 18 publications

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“…The late Quaternary sequence contains two types of dark layers: (1) thick dark layers with low-moderate organic carbon and high total sulphur content (Tada et al, 1992;Terashima et al, 1998) that formed during the lowest sea-level stands when the Japan Sea was largely closed (Oba et al, 1991) and vertical water circulation was limited (Itaki et al, 2004); and (2) thin dark layers with high-moderate organic carbon and lowhigh total sulphur content (Tada et al, 1992;Terashima et al, 1998) that formed during moderate sea-level stands in association with high primary productivity and low vertical circulation (Tada et al, 1999;Watanabe et al, 2007). The correlation of tephra layers among the cores collected from the southern and eastern Japan Sea enables the correlation of equivalent dark layers, revealing that they formed synchronously throughout the sea (Tada et al, 1992;Ikehara, 2003).…”

Section: Methodsmentioning

confidence: 99%

Orbital‐ and millennial‐scale fluctuations in late Quaternary marine pollen records from the Japan Sea

Ikehara

Oshima²

2009

J Quaternary Science

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Quaternary surface water conditions within the Japan Sea change with eustatic sea-level changes and fluctuations in the East Asian Summer Monsoon (EASM), influencing regional climate and vegetation through the delivery of heat and moisture. Our marine pollen data suggest overall cooling from the Last Interglacial (ca. 125 ka) to the Last Glacial Maximum (LGM), a cold climate during Marine Isotope Stage (MIS) 2, gradual warming from 12 ka and rapid warming after 10 ka. These stages are concordant with published palaeoceanographic changes in the Japan Sea. During mid MIS 5 to MIS 3, marine sediments in the Japan Sea are characterised by fine alternations of dark-and light-coloured layers that formed under the influence of fluctuations in the EASM, possibly correlated with Dansgaard-Oeschger cycles. During the deposition of dark layers, high levels of precipitation are inferred from the abundance of Cryptomeria. In contrast, a cool and dry climate is interpreted for the light layers, based on an abundance of subarctic conifer pollen. The palaeoclimate of the Japan Sea region appears to have been influenced by orbital-scale changes in global climate and millennial-scale fluctuations in the EASM.

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Section: Methodsmentioning

confidence: 99%

Orbital‐ and millennial‐scale fluctuations in late Quaternary marine pollen records from the Japan Sea

Ikehara

Oshima²

2009

J Quaternary Science

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“…Both surface water circulation and water ventilation in the Japan Sea have oscillated over orbital and millennial time scales during the Late Pleistocene to the Holocene, reflecting glacio-eustatic sea level and East Asian monsoon fluctuations Tada et al 1999: Itaki et al 2004Watanabe et al 2007;Usami et al 2013). These could affect the magnitude of the marine reservoir effect.…”

Section: Tephra As a Paleoceanographic And Paleoclimatological Toolmentioning

confidence: 99%

Marine tephra in the Japan Sea sediments as a tool for paleoceanography and paleoclimatology

Ikehara

2015

Prog. in Earth and Planet. Sci.

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Tephra is a product of large and explosive volcanic events and can travel thousands of kilometers before deposition. Consequently, tephra deposits are common in terrestrial, lacustrine, marine, and glacial environments. Because tephra deposition is a geologically synchronous event, tephras constitute important isochrones in the Quaternary sequence, not only in Japan but also throughout the northwest Pacific and its marginal seas. As a result, establishing the chronostratigraphic order of tephra deposits is an effective tool for assessing local and regional stratigraphies and for correlating events among sites. For example, tephrostratigraphy can provide precise chronological constraints for other stratigraphic data, such as magneto-and biostratigraphic data. Spatiotemporal variability in the occurrence and geochemistry of tephras can also be used to trace the magmatic evolution of island arcs and their relationships to regional tectonics. In a paleoclimatic context, tephra deposits allow the correlation of past climate events among terrestrial, lacustrine, and marine environments. Tephrochronology is also a fundamental element used in reconstructing the marine reservoir effect, where the ages of tephra in marine and terrestrial settings are compared. Therefore, tephra is a valuable tool not only in stratigraphy, chronology, and volcanology but also in paleoceanography and paleoclimatology.

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“…This table is a synthesis of contributions from previous works, modified from [31]. In this table, the bioturbation proxy is based on [32], degree of pyritization (DOP) from [33], and element ratios in geochemistry largely from [8,34,35].…”

Section: Proxies Of Oc Sedmentioning

confidence: 99%

“…However, it is still hard to give a certain relationship between these situations. Sedimentary structures: Watanabe et al [32] subdivided four types of bioturbation and bedding degrees of the sediments that can be used to distinguish the four redox conditions: aerobic, dysaerobic, quasi-anaerobic, and anaerobic. This is followed in our work.…”

Section: Proxies Of Oc Sedmentioning

confidence: 99%

Geobiological approach to evaluating marine carbonate source rocks of hydrocarbon

Yin

Xie

Yan

et al. 2011

Sci. China Earth Sci.

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Evaluating the pre-Jurassic marine source rocks in China has been difficult because these rocks are generally too high-or over-maturated for most traditional methods to work. As to the remaining parameter TOC (%), its lower limit for recognizing the carbonate source rocks in China has been in dispute. Nineteen Phanerozoic sections in the Middle-Upper Yangtze Platform and the Guizhou-Hunan-Guangxi Basin have been studied in search for a different approach to complementing the traditional evaluation method for these source rocks. We have applied a geobiological approach to tracing the organic carbon (OC) output and accumulation from the living stage (primary productivity) to the post-mortem deposited remains, and finally to the preserved burial organics. Four biological and geological parameters are employed to represent the OC of the three stages. A series of proxies of these parameters are discussed and integrated to establish a geobiological evaluation system independent of TOC and other traditional methods. Here we use the Guangyuan section in Sichuan as an example for the geobiological evaluation. Our results indicate that in the argillaceous rocks, the geobiological parameters show the qualified source rocks in accordance with high TOC values; but in the carbonates, the good source rocks delineated by the geobiological parameters have a wide range of TOC, from 0.03% to 1.59%, mostly <0.3%. We suggest that it is still premature to set TOC=0.3% or 0.5% as the lower limit for the pre-Jurassic carbonate source rocks in South China. geobiological evaluation, carbonate source rocks, parameters, proxies Citation:Yin H F, Xie S C, Yan J X, et al. Geobiological approach to evaluating marine carbonate source rocks of hydrocarbon.

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Sediment fabrics, oxygenation history, and circulation modes of Japan Sea during the Late Quaternary

Cited by 80 publications

References 18 publications

Orbital‐ and millennial‐scale fluctuations in late Quaternary marine pollen records from the Japan Sea

Orbital‐ and millennial‐scale fluctuations in late Quaternary marine pollen records from the Japan Sea

Marine tephra in the Japan Sea sediments as a tool for paleoceanography and paleoclimatology

Geobiological approach to evaluating marine carbonate source rocks of hydrocarbon

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