Arid
DOI10.1016/j.gca.2014.03.014
Deciphering human-climate interactions in an ombrotrophic peat record: REE, Nd and Pb isotope signatures of dust supplies over the last 2500 years (Misten bog, Belgium)
Fagel, N.1; Allan, M.1; Le Roux, G.2; Mattielli, N.3; Piotrowska, N.4; Sikorski, J.4
通讯作者Fagel, N.
来源期刊GEOCHIMICA ET COSMOCHIMICA ACTA
ISSN0016-7037
EISSN1872-9533
出版年2014
卷号135页码:288-306
英文摘要

A high-resolution peat record from Eastern Belgium reveals the chronology of dust deposition for the last 2500 years. REE and lithogenic elements in addition to Nd and Pb isotopes were measured in a 173 cm age-dated peat profile and provide a continuous chronology of dust source and intensity. Calculated dust flux show pronounced increases c. 300 BC, 600 AD, 1000 AD, 1200 AD and from 1700 AD, corresponding to local and regional human activities combined with climate change. The Industrial Revolution samples (1700-1950 AD) are characterised by a significant enrichment in Sc-normalised REE abundance (sum REE/Sc > 25) due to intensive coal combustion. For the pre-Industrial Revolution samples, the Sc-normalised REE abundance (10 < Sum REE/Sc < 25) and the epsilon Nd variability (-13 to -9) are interpreted by a mixing between dust particles from local soils and long-range transport of desert particles. Three periods characterised by dominant-distal sources (c. 320 AD, 1000 AD and 1700 AD) are consistent with local wetter-than-average intervals as indicated by a lower degree of peat humification. Local erosion prevails during the drier (higher humification) intervals (100 AD, 600 AD). On a global scale, more distal supplies are driven during colder periods, in particular during the Oort and Maunder minima, suggesting a potential link between dust deposition and global climate. Combining REE abundance, fractionation between Light REE and Heavy REE and Nd isotope data in ombrotrophic peat allows one to distinguish between dust flux changes related to human and climate forcings. (C) 2014 Elsevier Ltd. All rights reserved.


类型Article
语种英语
国家Belgium ; France ; Poland
收录类别SCI-E
WOS记录号WOS:000335656900015
WOS关键词RARE-EARTH-ELEMENTS ; C-14 YR BP ; ATMOSPHERIC LEAD ; JURA MOUNTAINS ; ENVIRONMENTAL-CHANGE ; GLACIAL MAXIMUM ; BRABANT MASSIF ; TESTATE AMEBAS ; WESTERN-EUROPE ; TRACE-ELEMENTS
WOS类目Geochemistry & Geophysics
WOS研究方向Geochemistry & Geophysics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/182222
作者单位1.Univ Liege ULg, AGEs, Dept Geol, Liege, Belgium;
2.EcoLab, ENSAT, F-31326 Castanet Tolosan, France;
3.Univ Libre Bruxelles, G Time, Brussels, Belgium;
4.Silesian Tech Univ, GADAM Ctr Excellence, Inst Phys, Dept Radioisotopes, Gliwice, Poland
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GB/T 7714
Fagel, N.,Allan, M.,Le Roux, G.,et al. Deciphering human-climate interactions in an ombrotrophic peat record: REE, Nd and Pb isotope signatures of dust supplies over the last 2500 years (Misten bog, Belgium)[J],2014,135:288-306.
APA Fagel, N.,Allan, M.,Le Roux, G.,Mattielli, N.,Piotrowska, N.,&Sikorski, J..(2014).Deciphering human-climate interactions in an ombrotrophic peat record: REE, Nd and Pb isotope signatures of dust supplies over the last 2500 years (Misten bog, Belgium).GEOCHIMICA ET COSMOCHIMICA ACTA,135,288-306.
MLA Fagel, N.,et al."Deciphering human-climate interactions in an ombrotrophic peat record: REE, Nd and Pb isotope signatures of dust supplies over the last 2500 years (Misten bog, Belgium)".GEOCHIMICA ET COSMOCHIMICA ACTA 135(2014):288-306.
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