| Clay-sized sediment provenance change in the northern Okinawa Trough since 22 kyr BP and its paleoenvironmental implication | |
Xu, Zhaokai1; Li, Tiegang1 ; Chang, Fengming1; Wan, Shiming1; Choi, Jinyong2; Lim, Dhongil3; Xu, ZK (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China.
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| 2014-04-01 | |
| 发表期刊 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
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| 卷号 | 399页码:236-245 |
| 文章类型 | Article |
| 摘要 | Provenances of clay-sized terrigenous sediments and a comprehensive interpretation of their high-resolution variations in the northern Okinawa Trough since the late last glaciation remain unclear, especially in regard to the Huanghe- and Taiwan-derived matter. Grain size, clay mineralogy, typical elemental ratio, oxygen isotope, and AMS C-14 dating of core PC-1 in the northern Okinawa Trough were investigated to trace clay-sized sediment provenance and transport process and thus to recover their forcing mechanisms over the last 22 kyr. Variations in linear sedimentation rate, grain size, delta O-18, Ti/Ca ratio, and clay minerals can be clearly divided into three distinct intervals, consistent with changes in sediment provenance that can be close related to sea-level fluctuation, evolution of the Tsushima Warm Current as well as influence from the East Asian monsoon climate evolution. During the late last glaciation period (Interval 1, 22-16 kyr BP) when the Tsushima Warm Current was absent in the East China Sea, the paleo-Huanghe mouth was situated close to the study area and thus the paleo-Huanghe could have played major role in sedimentation therein. In Interval 2 (16-7.3 kyr BP), global sea-level rise led to gradually retreating of the paleo-Huanghe mouth and thus decreasing terrigenous sediment supply from it to the study area. Since 73 kyr BP (Interval 3), some clay minerals from Taiwan might have been transported northward to the study area by the fully evolved Tsushima Warm Current, characterized by higher chlorite/kaolinite ratios. In contrast, the decreasing influence of the Huanghe-derived sediments during the strengthening of the Tsushima Warm Current periods was probably caused by the blocking effect of the Tsushima Warm Current Particularly, chlorite/kaolinite ratio and smectite content in the Okinawa Trough sediment might be good proxies for indicating the Tsushima Warm Current-related sedimentary environment. (C) 2014 Elsevier B.V. All rights reserved. |
| 关键词 | Sediment Provenance Clay Minerals Sea Level Tsushima Warm Current East Asian Monsoon Northern Okinawa Trough |
| 学科领域 | Physical Geography ; Geology ; Paleontology |
| DOI | 10.1016/j.palaeo.2014.01.016 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000334978400019 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/23803 |
| 专题 | 海洋地质与环境重点实验室 |
| 通讯作者 | Xu, ZK (reprint author), Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China. |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 2.Kunsan Natl Univ, Dept Oceanog, Kunsan 573701, South Korea 3.Korea Ocean Res & Dev Inst, South Sea Inst, Geoje 656830, South Korea |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Xu, Zhaokai,Li, Tiegang,Chang, Fengming,et al. Clay-sized sediment provenance change in the northern Okinawa Trough since 22 kyr BP and its paleoenvironmental implication[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2014,399:236-245. |
| APA | Xu, Zhaokai.,Li, Tiegang.,Chang, Fengming.,Wan, Shiming.,Choi, Jinyong.,...&Xu, ZK .(2014).Clay-sized sediment provenance change in the northern Okinawa Trough since 22 kyr BP and its paleoenvironmental implication.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,399,236-245. |
| MLA | Xu, Zhaokai,et al."Clay-sized sediment provenance change in the northern Okinawa Trough since 22 kyr BP and its paleoenvironmental implication".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 399(2014):236-245. |
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