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Response of the northwestern Pacific upper water delta C-13 to the last deglacial ventilation of the deep Southern Ocean ArchiMer
Chen, Shaungxi; Li, Tiegang; Tang, Zheng; Qiu, Xiaohua; Xiong, Zhifang; Nan, Qingyun; Xu, Zhaokai; Chang, Fengming.
The deglacial delta C-13 minimum events that originated from the ventilation of the deep Southern Ocean around Antarctica, have been recorded in a range of marine sediments from the southern to tropical oceans in late Pleistocene. However, the broad delta C-13 minimum event was also reported as far as to the northern middle latitudes, in northwestern Pacific marginal sea areas, during the last deglaciation. In the northwestern Pacific, forcing from the northern high latitudes is strongly expressed, while the records of influence from the southern high latitudes are few. The Kuroshio Source Region (KSR) forms a boundary between the northwestern Pacific and the southern, tropical Pacific. So, high-resolution planktonic foraminiferal records in core MD06-3054...
Tipo: Text Palavras-chave: Planktonic foraminiferal delta C-13; Ventilation of the deep Southern Ocean; Northwestern Pacific; Last deglaciation; Delta C-13 minimum event.
Ano: 2011 URL: https://archimer.ifremer.fr/doc/00213/32467/30934.pdf
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Sediment provenance and evolution of the East Asian winter monsoon since 700 ka recorded by major elements in the West Philippine Sea ArchiMer
Xu, Zhaokai; Li, Tiegang; Yu, Xinke; Li, Anchun; Tang, Zheng; Choi, Jinyong; Nan, Qingyun.
To synthetically realize the character of major-element compositions as well as its significance for provenance and paleoenvironment recorded in core sediments of the West Philippine Sea over the last 700 ka, grain size and major elements of 221 bulk sediments, together with major-element compositions in the detrital phase of 16 typical samples, in core MD06-3047 collected from the Benham Rise were analyzed. Both discrimination plot and R-mode factor analysis indicate that vertical changes of major elements are mainly controlled by the sedimentation of nearby volcanic matter and the eolian dust input, whereas influences from marine biologic deposition and hydrothermal activity are minor. In particular, Al2O3 and K2O are representative of an eolian dust...
Tipo: Text Palavras-chave: Major elements; Provenance; Eolian dust; East Asian winter monsoon; West Philippine Sea.
Ano: 2013 URL: https://archimer.ifremer.fr/doc/00264/37557/36494.pdf
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