Holocene evolution in weathering and erosion patterns in the Pearl River delta

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	Holocene evolution in weathering and erosion patterns in the Pearl River delta
	Hu, Dengke 1,2; Clift, Peter D.2,3; Boening, Philipp 4; Hannigan, Robyn 5; Hillier, Stephen 6,7; Blusztajn, Jerzy 8; Wan, Shiming 9; Fuller, Dorian Q.10
刊名	GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
	2013-07-01
卷号	14 期号:7 页码:2349-2368
关键词	physical erosion chemical weathering human settlement proxies landscape Pearl river basin archaeology
ISSN号	1525-2027
通讯作者	Hu, DK
中文摘要	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.
英文摘要	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.
学科主题	Geochemistry & Geophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geochemistry & Geophysics
研究领域[WOS]	Geochemistry & Geophysics
关键词[WOS]	SOUTH-CHINA SEA ; CRUSTAL EVOLUTION ; PALEOCLIMATIC INTERPRETATION ; SOUTHEASTERN CHINA ; HIGH-RESOLUTION ; MONSOON RECORD ; CLAY-MINERALS ; SR ; ND ; SEDIMENTS
收录类别	SCI
原文出处	10.1002/ggge.20166
语种	英语
WOS记录号	WOS:000323828800016
公开日期	2014-07-17
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/16306]
专题	海洋研究所_海洋地质与环境重点实验室
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.,...&Fuller, Dorian Q..(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.