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Article: Evolution of a deep-water ferromanganese nodule in the South China Sea in response to Pacific deep-water circulation and continental weathering during the Plio-Pleistocene

TitleEvolution of a deep-water ferromanganese nodule in the South China Sea in response to Pacific deep-water circulation and continental weathering during the Plio-Pleistocene
Authors
KeywordsPolymetallic nodule
Rock magnetic properties
Global cooling
Pacific deep water
South China sea
Issue Date2020
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/quascirev
Citation
Quaternary Science Reviews, 2020, v. 229, p. article no. 106106 How to Cite?
AbstractThe South China Sea (SCS) is connected to the West Pacific through a deep channel in the Luzon Strait. Thus the SCS deep water is sensitive to the evolution of Pacific Ocean circulation, which significantly influences the global climate system. Geochemical data (Pb isotope and redox-sensitive elements data) and magnetic data were determined for a Fe–Mn nodule obtained from Jiaolong seamount in the central SCS. These records reflect interactions between changes in ice sheets, deep Pacific circulation, and weathering inputs to the deep SCS during the Pliocene and Quaternary. Our results show that the SCS deep-water environment can be divided into three major Stages (Stages 1–3). Stage 1 (∼4.8–1.4 Ma) was characterized by a well-oxygenated Pacific Deep Water (PDW) and lower dust inputs; then moderate stable deep-water ventilation and greater inputs of Asian dust occurred during Stage 2 (1.4–0.9 Ma). During Stage 3 (<0.9 Ma), a more isolated PDW was accompanied by sluggish Pacific overturning circulation, probably due to the weakened southern-sourced deep-water formation. In general, the progressive intensification of northern hemisphere ice-sheet play an active role in controlling the variation of the deep-water environment in the SCS. Interestingly, the variation in deep-water ventilation lagged behind weathering and erosion around the Middle Pleistocene Transition, which strongly indicates that the ocean and continent environments had different sensitivities to the global paleoclimatic changes at the glacial climate boundary.
Persistent Identifierhttp://hdl.handle.net/10722/284974
ISSN
2019 Impact Factor: 3.803
2015 SCImago Journal Rankings: 2.928

 

DC FieldValueLanguage
dc.contributor.authorZhong, Y-
dc.contributor.authorChen, Z-
dc.contributor.authorHein, JR-
dc.contributor.authorGonzález, FJ-
dc.contributor.authorJiang, Z-
dc.contributor.authorYang, X-
dc.contributor.authorZhang, J-
dc.contributor.authorWang, W-
dc.contributor.authorShi, X-
dc.contributor.authorLiu, Z-
dc.contributor.authorLiu, Q-
dc.date.accessioned2020-08-07T09:05:04Z-
dc.date.available2020-08-07T09:05:04Z-
dc.date.issued2020-
dc.identifier.citationQuaternary Science Reviews, 2020, v. 229, p. article no. 106106-
dc.identifier.issn0277-3791-
dc.identifier.urihttp://hdl.handle.net/10722/284974-
dc.description.abstractThe South China Sea (SCS) is connected to the West Pacific through a deep channel in the Luzon Strait. Thus the SCS deep water is sensitive to the evolution of Pacific Ocean circulation, which significantly influences the global climate system. Geochemical data (Pb isotope and redox-sensitive elements data) and magnetic data were determined for a Fe–Mn nodule obtained from Jiaolong seamount in the central SCS. These records reflect interactions between changes in ice sheets, deep Pacific circulation, and weathering inputs to the deep SCS during the Pliocene and Quaternary. Our results show that the SCS deep-water environment can be divided into three major Stages (Stages 1–3). Stage 1 (∼4.8–1.4 Ma) was characterized by a well-oxygenated Pacific Deep Water (PDW) and lower dust inputs; then moderate stable deep-water ventilation and greater inputs of Asian dust occurred during Stage 2 (1.4–0.9 Ma). During Stage 3 (<0.9 Ma), a more isolated PDW was accompanied by sluggish Pacific overturning circulation, probably due to the weakened southern-sourced deep-water formation. In general, the progressive intensification of northern hemisphere ice-sheet play an active role in controlling the variation of the deep-water environment in the SCS. Interestingly, the variation in deep-water ventilation lagged behind weathering and erosion around the Middle Pleistocene Transition, which strongly indicates that the ocean and continent environments had different sensitivities to the global paleoclimatic changes at the glacial climate boundary.-
dc.languageeng-
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/quascirev-
dc.relation.ispartofQuaternary Science Reviews-
dc.subjectPolymetallic nodule-
dc.subjectRock magnetic properties-
dc.subjectGlobal cooling-
dc.subjectPacific deep water-
dc.subjectSouth China sea-
dc.titleEvolution of a deep-water ferromanganese nodule in the South China Sea in response to Pacific deep-water circulation and continental weathering during the Plio-Pleistocene-
dc.typeArticle-
dc.identifier.emailLiu, Z: zhliu@hku.hk-
dc.identifier.authorityLiu, Z=rp00750-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.quascirev.2019.106106-
dc.identifier.scopuseid_2-s2.0-85076672369-
dc.identifier.hkuros312438-
dc.identifier.volume229-
dc.identifier.spagearticle no. 106106-
dc.identifier.epagearticle no. 106106-
dc.publisher.placeUnited Kingdom-

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