Paleoenvironment evolution of the East Philippine Sea recorded in the new-type ferromanganese crust since the terminal Late Miocene

doi:10.1007/s11430-007-0054-4

IOCAS-IR > 海洋地质与环境重点实验室

	Paleoenvironment evolution of the East Philippine Sea recorded in the new-type ferromanganese crust since the terminal Late Miocene
	Xu ZhaoKai ; Li AnChun ; Jiang FuQing ; Li TieGang; Meng QingYong ; Jin Ning
	2007-08-01
发表期刊	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
ISSN	1006-9313
卷号	50 期号:8 页码:1179-1188
文章类型	Article
摘要	From systemic research of microstructure, geochemistry, uranium-series and Be-10 isotope dating on a new-type deepwater ferromanganese crust from the East Philippine Sea, the paleoenvironment evolution of the target area since the terminal Late Miocene was recovered. The vertical section changes of microstructure and chemical composition are consistent in the studied crust, which indicate three major accretion periods and corresponding paleoenvironment evolution of the crust. The bottom crust zone was formed in the terminal Late Miocene (5.6 Ma) with loose microstructure, high detritus content and high growth rate. Reductions of mineral element content, accretion rate and positive Ce-anomaly degree at 4.6 Ma indicate temporal warming, which went against the crust accretion and finally formed an accretion gap in the terminal Middle Pliocene (2.8-2.7 Ma). The more active Antarctic bottom seawaters in the Late Pliocene (2.7 Ma) facilitated the fast transfer to the top pure crust zone. Hereafter, with the further apart of volcanic source and the keeping increase of eolian material (1.0 Ma), although surrounding conditions were still favorable, mineral element content still shows an obvious reducing trend. It thereby offers new carrier and data for the unclear paleoceanographic research of the target area since the terminal Late Miocene.; From systemic research of microstructure, geochemistry, uranium-series and Be-10 isotope dating on a new-type deepwater ferromanganese crust from the East Philippine Sea, the paleoenvironment evolution of the target area since the terminal Late Miocene was recovered. The vertical section changes of microstructure and chemical composition are consistent in the studied crust, which indicate three major accretion periods and corresponding paleoenvironment evolution of the crust. The bottom crust zone was formed in the terminal Late Miocene (5.6 Ma) with loose microstructure, high detritus content and high growth rate. Reductions of mineral element content, accretion rate and positive Ce-anomaly degree at 4.6 Ma indicate temporal warming, which went against the crust accretion and finally formed an accretion gap in the terminal Middle Pliocene (2.8-2.7 Ma). The more active Antarctic bottom seawaters in the Late Pliocene (2.7 Ma) facilitated the fast transfer to the top pure crust zone. Hereafter, with the further apart of volcanic source and the keeping increase of eolian material (1.0 Ma), although surrounding conditions were still favorable, mineral element content still shows an obvious reducing trend. It thereby offers new carrier and data for the unclear paleoceanographic research of the target area since the terminal Late Miocene.
关键词	New-type Ferromanganese Crust Record Paleoenvironment Evolution Uranium-series Dating Be-10 Isotope Dating East Philippine Sea
学科领域	Geosciences, Multidisciplinary
DOI	10.1007/s11430-007-0054-4
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000247978200007
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/5082
专题	海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Grad Univ, Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Xu ZhaoKai,Li AnChun,Jiang FuQing,et al. Paleoenvironment evolution of the East Philippine Sea recorded in the new-type ferromanganese crust since the terminal Late Miocene[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2007,50(8):1179-1188.
APA	Xu ZhaoKai,Li AnChun,Jiang FuQing,Li TieGang,Meng QingYong,&Jin Ning.(2007).Paleoenvironment evolution of the East Philippine Sea recorded in the new-type ferromanganese crust since the terminal Late Miocene.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,50(8),1179-1188.
MLA	Xu ZhaoKai,et al."Paleoenvironment evolution of the East Philippine Sea recorded in the new-type ferromanganese crust since the terminal Late Miocene".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 50.8(2007):1179-1188.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
xu-Paleoenvironment （1016KB）			限制开放	--	浏览