Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/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
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ISSN | 0016-7037 |
EISSN | 1872-9533 |
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 |
推荐引用方式 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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