| Holocene evolution in weathering and erosion patterns in the Pearl River delta | |
Hu, Dengke1,2; Clift, Peter D.2,3; Boening, Philipp4; Hannigan, Robyn5; Hillier, Stephen6,7; Blusztajn, Jerzy8; Wan, Shiming9 ; Fuller, Dorian Q.10; Hu, DK
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| 2013-07-01 | |
| 发表期刊 | GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
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| ISSN | 1525-2027 |
| 卷号 | 14期号:7页码:2349-2368 |
| 文章类型 | Article |
| 摘要 | Sediments in the Pearl River delta have the potential to record the weathering response of this river basin to climate change since 9.5 ka, most notably weakening of the Asian monsoon since the Early Holocene (approximate to 8 ka). Cores from the Pearl River delta show a clear temporal evolution of weathering intensity, as measured by K/Al, K/Rb, and clay mineralogy, that shows deposition of less weathered sediment at a time of weakening monsoon rainfall in the Early-Mid Holocene (6.0-2.5 ka). This may reflect an immediate response to a less humid climate, or more likely reduced reworking of older deposits from river terraces as the monsoon weakened. Human settlement of the Pearl River basin may have had a major impact on landscape and erosion as a result of the establishment of widespread agriculture. After around 2.5 ka weathering intensity sharply increased, despite limited change in the monsoon, but at a time when anthropogenic pollutants (e.g., Cu, Zn, and Pb) increased and when the flora of the basin changed. Sr-87/Sr-86 covaries with these other proxies but is also partly influenced by the presence of carbonate. The sediments in the modern Pearl River are even more weathered than the youngest material from the delta cores. We infer that the spread of farming into the Pearl River basin around 2.7 ka was followed by a widespread reworking of old, weathered soils after 2.5 ka, and large-scale disruption of the river system that was advanced by 2.0 ka.; Sediments in the Pearl River delta have the potential to record the weathering response of this river basin to climate change since 9.5 ka, most notably weakening of the Asian monsoon since the Early Holocene (approximate to 8 ka). Cores from the Pearl River delta show a clear temporal evolution of weathering intensity, as measured by K/Al, K/Rb, and clay mineralogy, that shows deposition of less weathered sediment at a time of weakening monsoon rainfall in the Early-Mid Holocene (6.0-2.5 ka). This may reflect an immediate response to a less humid climate, or more likely reduced reworking of older deposits from river terraces as the monsoon weakened. Human settlement of the Pearl River basin may have had a major impact on landscape and erosion as a result of the establishment of widespread agriculture. After around 2.5 ka weathering intensity sharply increased, despite limited change in the monsoon, but at a time when anthropogenic pollutants (e.g., Cu, Zn, and Pb) increased and when the flora of the basin changed. Sr-87/Sr-86 covaries with these other proxies but is also partly influenced by the presence of carbonate. The sediments in the modern Pearl River are even more weathered than the youngest material from the delta cores. We infer that the spread of farming into the Pearl River basin around 2.7 ka was followed by a widespread reworking of old, weathered soils after 2.5 ka, and large-scale disruption of the river system that was advanced by 2.0 ka. |
| 关键词 | Physical Erosion Chemical Weathering Human Settlement Proxies Landscape Pearl River Basin Archaeology |
| 学科领域 | Geochemistry & Geophysics |
| DOI | 10.1002/ggge.20166 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Geochemistry & Geophysics |
| WOS类目 | Geochemistry & Geophysics |
| WOS记录号 | WOS:000323828800016 |
| WOS关键词 | SOUTH-CHINA SEA ; CRUSTAL EVOLUTION ; PALEOCLIMATIC INTERPRETATION ; SOUTHEASTERN CHINA ; HIGH-RESOLUTION ; MONSOON RECORD ; CLAY-MINERALS ; SR ; ND ; SEDIMENTS |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/16306 |
| 专题 | 海洋地质与环境重点实验室 |
| 通讯作者 | Hu, DK |
| 作者单位 | 1.Univ Aberdeen, Sch Geosci, Aberdeen AB24 3UE, Scotland 2.Chinese Acad Sci, Key Lab Marginal Sea Geol, Guangzhou, Guangdong, Peoples R China 3.Louisiana State Univ, Dept Geol & Geophys, Baton Rouge, LA 70803 USA 4.Carl von Ossietzky Univ Oldenburg, Inst Chem & Biol Marine Environm ICBM, D-26111 Oldenburg, Germany 5.Univ Massachusetts, Dept Environm Earth & Ocean Sci, Boston, MA 02125 USA 6.James Hutton Inst, Grp Environm & Biochem Sci, Aberdeen, Scotland 7.Swedish Univ Agr Sci, Dept Soil & Environm, S-90183 Umea, Sweden 8.Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02543 USA 9.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao, Peoples R China 10.UCL, Inst Archaeol, London, England |
| 推荐引用方式 GB/T 7714 | Hu, Dengke,Clift, Peter D.,Boening, Philipp,et al. Holocene evolution in weathering and erosion patterns in the Pearl River delta[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2013,14(7):2349-2368. |
| APA | Hu, Dengke.,Clift, Peter D..,Boening, Philipp.,Hannigan, Robyn.,Hillier, Stephen.,...&Hu, DK.(2013).Holocene evolution in weathering and erosion patterns in the Pearl River delta.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,14(7),2349-2368. |
| MLA | Hu, Dengke,et al."Holocene evolution in weathering and erosion patterns in the Pearl River delta".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 14.7(2013):2349-2368. |
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| Holocene evolution i（1348KB） | 限制开放 | CC BY-NC-SA | 浏览 | |||
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