Sr-Nd isotopic constraints on detrital sediment provenance and paleoenvironmental change in the northern Okinawa Trough during the late Quaternary
Sr-Nd isotopic constraints on detrital sediment provenance and paleoenvironmental change in the northern Okinawa Trough during the late Quaternary
复制标题
晚第四纪冲绳海槽北部碎屑沉积物来源及古环境变化的Sr-Nd同位素约束
DOI：
10.1016/j.palaeo.2015.04.017
复制
发表时间：
2015-07
影响因子：
3
通讯作者：
Jinyong Choi
中科院分区：
文献类型：
--
作者：
Tiegang Li;Zhaokai Xu;Dhongil Lim;Fengming Chang;Shiming Wan;HoiSoo Jung;Jinyong Choi
For this study, elemental and Sr–Nd isotopic compositions of AMS14C age-dated core sediments from the northern Okinawa Trough were investigated to reconstruct sediment provenance and transport processes over the last 22.3 ka and further to trace the forcing mechanisms behind the provenance changes. The results clearly showed that large compositional variations of these elements and isotopes occur in deposition, suggesting three-phases of changes in sediment source: paleo-Huanghe (Unit 3, 22.3–14.8 ka), East China Sea shelf-derived (Unit 2, 14.8–7.3 ka), and Taiwan-derived detritus stages (Unit 1, < 7.3 ka). Such provenance changes since the last glacial maximum may be closely correlated to sea-level fluctuation, the evolution of Tsushima Warm Current, as well as East Asian monsoonal climatic variation. At 22.3–14.8 ka, the paleo-Huanghe mouth was situated close to the study area, thus dominating sedimentation therein, especially during stronger winter monsoon periods. At the beginning of Unit 2 (14.8–12.8 ka), rapid sea-level rise and significant retreat of the river mouth overwhelmed enhanced continental weathering, leading to less detrital sediment supply from the paleo-Huanghe to the study area. Subsequently, the East China Sea shelf-derived matter dominated detrital deposition therein from 12.8 to 7.3 ka. Since 7.3 ka, the fully evolved Tsushima Warm Current has transported some detrital particles from Taiwan to the study area, especially during the strengthening period at 7.3–5.1 ka. A prominent decline in Taiwan-sourced matter supply at 5.1–2.8 ka may have been caused by suppression of the Tsushima Warm Current, possibly associated with thePulleniatinaminimum event.
登录
查看更多内容
冲绳海槽表层沉积物R模式因子分析推断东海沉积物路径
影响因子：
2.2
作者：
Jiang Fuqing;Li Anchun;Li Tiegang
通讯作者：
Li Tiegang
近21年来东海郁陵盆地沉积物来源及古环境变化
影响因子：
3
作者：
Zhaokai Xu;Dhongil Lim;Jinyong Choi;Tiegang Li;Shiming Wan;Kyoungchan Rho
通讯作者：
Kyoungchan Rho
影响因子：
2.9
作者：
T. Tütken;A. Eisenhauer;Bettina A. Wiegand;B. T. Hansen
通讯作者：
T. Tütken;A. Eisenhauer;Bettina A. Wiegand;B. T. Hansen
影响因子：
1.9
作者：
H. Ujiié;Y. Ujiié
通讯作者：
H. Ujiié;Y. Ujiié
28 ka以来冲绳海槽中部粘土矿物演化：对沉积物来源和古环境变化的影响
DOI：
10.1016/j.palaeo.2010.01.040
发表时间：
2010-03
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子：
--
作者：
Dou, Yanguang;Yang, Shouye;Liu, Zhenxia;Clift, Peter D.;Yu, Hua;Berne, Serge;Shi, Xuefa
通讯作者：
Shi, Xuefa