Paleoenvironmental Changes in the Northern Okinawa Trough since 25 ka BP:REE and Organic Carbon Evidence

IOCAS-IR

	Paleoenvironmental Changes in the Northern Okinawa Trough since 25 ka BP:REE and Organic Carbon Evidence
	Xu ZK(徐兆凯); Li TG(李铁刚); Nan QY(南青云); Yu XK(于心科); Li AC(李安春); Jinyong Choi
发表期刊	Journal of Earth Science
ISSN	1674-487X
	2012-06-15
出版年	2012
卷号	v.23 期号:03 页码:49-62
文献类型	CNKI期刊论文
摘要	Paleoenvironmental changes in the northern Okinawa trough covering the last 25 ka were synthetically reconstructed using REE and organic carbon indices of core CSH1.Variations of these parameters revealed three distinct intervals of major sediment provenance changes that can be related to sea-level fluctuation and Tsushima Warm Current evolution.Interval 1(16-24.7 ka BP) is characterized by dominantly fluvial discharge from the Changjiang(Yangtze River) and Huanghe(Yellow River) as well as high primary productivity.In Interval 2(7.3-16 ka BP),the Changjiang and Huanghe mouths regressed with sea-level rising.The newly formed Tsushima Warm Current could carry some sediment loads of Taiwan to the study core,especially during its late phase(7.3-8.2 ka BP).Modern oceanographic conditions were finally established since the beginning of Interval 3,leading to more terrigenous contribution from Taiwan,whereas low sea-surface productivity in the study area.
关键词	paleoenvironmental change,the northern Okinawa trough,Tsushima Warm Current,REE,discriminant function
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A011;
CNKI专题名称	地质学;
分类号	P595
收录类别	中科院核心
语种	英文;
资助项目(基金）	supported by the Open Fund of the Key Laboratory of Marine Geology and Environment,Chinese Academy of Sciences,the Innovative Program of Chinese Academy of Sciences(No.KZCX2-YW-221) ; the National Basic Research Program of China(No.2007CB815903) ; the National Natural Science Foundation of China(Nos. 41106043 and 40906038)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/191232
专题	中国科学院海洋研究所
作者单位	1.KeyLaboratoryofMarineGeologyandEnvironment,InstituteofOceanology,ChineseAcademyofSciences 2.DepartmentofOceanography,KunsanNationalUniversity,Kunsan573-701,Korea
推荐引用方式 GB/T 7714	Xu ZK,Li TG,Nan QY,et al. Paleoenvironmental Changes in the Northern Okinawa Trough since 25 ka BP:REE and Organic Carbon Evidence. 2012.