Asian dust input in the western Philippine Sea: Evidence from radiogenic Sr and Nd isotopes

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	Asian dust input in the western Philippine Sea: Evidence from radiogenic Sr and Nd isotopes
	Jiang, Fuqing 1; Li, Tiegang1 ; Xu, Zhaokai 1; Li, Anchun 1; Frank, Martin 2; Chen, Tian-Yu 2
刊名	GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
	2013-05-01
卷号	14 期号:5 页码:1538-1551
关键词	Asian dust Luzon Islands detrital fraction Sr isotope Nd isotope western Philippine Sea
ISSN号	1525-2027
通讯作者	Jiang, FQ
中文摘要	The radiogenic strontium (Sr) and neodymium (Nd) isotope compositions of the detrital fraction of surface and subsurface sediments have been determined to trace sediment provenance and contributions from Asian dust off the east coast of Luzon Islands in the western Philippine Sea. The Sr and Nd isotope compositions have been very homogenous near the east coast of the Luzon Islands during the latest Quaternary yielding relatively least radiogenic Sr (Sr-87/Sr-86 = 0.70453 to 0.70491) and more radiogenic Nd isotope compositions (epsilon(Nd)(0) = +5.3 to +5.5). These isotope compositions are similar to Luzon rocks and show that these sediments were mainly derived from the Luzon Islands. In contrast, the Sr and Nd isotope compositions of sediments on the Benham Rise and in the Philippine Basin are markedly different in that they are characterized by overall more variable and more radiogenic Sr isotope compositions (Sr-87/Sr-86 = 0.70452 to 0.70723) and less radiogenic Nd isotope compositions (epsilon(Nd)(0) = -5.3 to +2.4). The Sr isotope composition in the Huatung Basin is intermediate between those of the east coast of Luzon and Benham Rise, but shows the least radiogenic Nd isotope compositions. The data are consistent with a two end-member mixing relationship between Luzon volcanic rocks and eolian dust from the Asian continent, which is characterized by highly radiogenic Sr and unradiogenic Nd isotope compositions. The results show that Asian continental dust contributes about 10-50% of the detrital fraction of the sediments on Benham Rise in the western Philippine Sea, which offers the potentials to reconstruct the climatic evolution of eastern Asia from these sediments and compare this information to the records from the central and northern Pacific. Key Points Sr and Nd isotopic signatures of lithogenic fraction from the Philippine Sea Asian dust input in the western Philippine Sea Offer potentials for reconstructions of the climatic evolution of Asia
英文摘要	The radiogenic strontium (Sr) and neodymium (Nd) isotope compositions of the detrital fraction of surface and subsurface sediments have been determined to trace sediment provenance and contributions from Asian dust off the east coast of Luzon Islands in the western Philippine Sea. The Sr and Nd isotope compositions have been very homogenous near the east coast of the Luzon Islands during the latest Quaternary yielding relatively least radiogenic Sr (Sr-87/Sr-86 = 0.70453 to 0.70491) and more radiogenic Nd isotope compositions (epsilon(Nd)(0) = +5.3 to +5.5). These isotope compositions are similar to Luzon rocks and show that these sediments were mainly derived from the Luzon Islands. In contrast, the Sr and Nd isotope compositions of sediments on the Benham Rise and in the Philippine Basin are markedly different in that they are characterized by overall more variable and more radiogenic Sr isotope compositions (Sr-87/Sr-86 = 0.70452 to 0.70723) and less radiogenic Nd isotope compositions (epsilon(Nd)(0) = -5.3 to +2.4). The Sr isotope composition in the Huatung Basin is intermediate between those of the east coast of Luzon and Benham Rise, but shows the least radiogenic Nd isotope compositions. The data are consistent with a two end-member mixing relationship between Luzon volcanic rocks and eolian dust from the Asian continent, which is characterized by highly radiogenic Sr and unradiogenic Nd isotope compositions. The results show that Asian continental dust contributes about 10-50% of the detrital fraction of the sediments on Benham Rise in the western Philippine Sea, which offers the potentials to reconstruct the climatic evolution of eastern Asia from these sediments and compare this information to the records from the central and northern Pacific.
学科主题	Geochemistry & Geophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geochemistry & Geophysics
研究领域[WOS]	Geochemistry & Geophysics
关键词[WOS]	NORTH PACIFIC SEDIMENTS ; MARINE-SEDIMENTS ; DEEP-SEA ; TERRIGENOUS SEDIMENT ; INTERGLACIAL CYCLES ; STRONTIUM ISOTOPES ; SR-87/SR-86 RATIOS ; OKINAWA TROUGH ; TAIWAN OROGEN ; ICE-SHEET
收录类别	SCI
原文出处	10.1002/ggge.20116
语种	英语
WOS记录号	WOS:000324412600013
公开日期	2014-07-17
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/16288]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao 266071, Peoples R China 2.GEOMAR Helmholtz Ctr Ocean Res Kiel, Kiel, Germany
推荐引用方式 GB/T 7714	Jiang, Fuqing,Li, Tiegang,Xu, Zhaokai,et al. Asian dust input in the western Philippine Sea: Evidence from radiogenic Sr and Nd isotopes[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2013,14(5):1538-1551.
APA	Jiang, Fuqing,Li, Tiegang,Xu, Zhaokai,Li, Anchun,Frank, Martin,&Chen, Tian-Yu.(2013).Asian dust input in the western Philippine Sea: Evidence from radiogenic Sr and Nd isotopes.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,14(5),1538-1551.
MLA	Jiang, Fuqing,et al."Asian dust input in the western Philippine Sea: Evidence from radiogenic Sr and Nd isotopes".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 14.5(2013):1538-1551.