干旱区生态环境知识资源中心(Arid): Geochemical signature of sources, recycling and weathering in the Last Glacial loess from the Rhone Valley (southeast France) and comparison with other European regions

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DOI	10.1016/j.aeolia.2019.100561
	Geochemical signature of sources, recycling and weathering in the Last Glacial loess from the Rhone Valley (southeast France) and comparison with other European regions
	Bosq, Mathieu 1; Bertran, Pascal 1,2; Degeai, Jean-Philippe 3; Queffelec, Alain 1; Moine, Olivier 4
通讯作者	Bosq, Mathieu
来源期刊	AEOLIAN RESEARCH
ISSN	1875-9637
EISSN	2212-1684
出版年	2020
卷号	42
英文摘要	Pleistocene loess of the Rhone Valley and Provence region, disconnected from the two main European aeolian systems (North European Loess Belt and Danube basin), are of interest to test the impact of source variability, grain size sorting, weathering and sediment recycling on the geochemical composition. The concentration of major, trace and rare earth elements in loess and potential sources was analysed through Inductively Coupled Plasma-Atomic Emission Spectroscopy (ICP-AES) and ICP-Mass Spectometry (ICP-MS). Analyses show a genetic relationship between loess and the Ca-rich river sediments from the Alpine Ice Sheet (AIS). The loess of Provence show distinctive properties with a higher CaO and MgO content and a higher Europium anomaly (Eu/Eu*), suggesting sources richer in dolomite together with a contribution from mafic rocks (Alpine ophiolite complex). The homogeneous loess composition, compared to alluvial sources, reflects particle mixing during transport in the atmosphere. At the European scale, the geochemical composition of loess changes according to regions, but remains consistent within each region. Such variability is mostly related to the composition of rocks outcropping in respective catchments and especially in areas covered by ice sheets. The Chemical Proxy of Alteration (CPA) and Rb/K ratio suggest a weak chemical weathering linked to the cold and dry conditions typical of the Last Glacial. Recycling of older aeolian formations possibly caused loess enrichment in resistant minerals and quartz, especially for loess derived mostly from the abrasion of aeolian sand (Aquitaine).
英文关键词	Geochemistry ICP analysis Last Glacial Loess Southeast France Weathering
类型	Article
语种	英语
国家	France
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000509789100005
WOS关键词	RARE-EARTH-ELEMENTS ; PALEOSOL SEQUENCE ; GRAIN-SIZE ; SEDIMENTARY-ROCKS ; CARPATHIAN BASIN ; TRACE-ELEMENTS ; DESERT LOESS ; SAHARAN DUST ; ORIGIN ; DEPOSITS
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
EI主题词	2020-01-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312280
作者单位	1.Univ Bordeaux, PACEA, CNRS, UMR 5199, Batiment B2,Allee Geoffroy St Hilaire, F-33615 Pessac, France; 2.Inrap, 140 Ave Marechal Leclerc, F-33130 Begles, France; 3.Univ Montpellier III, CNRS, UMR 5140, ASM, Route Mende, F-34199 Montpellier, France; 4.Univ Paris I Pantheon Sorborme, Univ Paris Est Creteil Val De Marne UPEC, CNRS, LGP,UMR 8591, Pl Aristide Briand, F-92195 Meudon, France
推荐引用方式 GB/T 7714	Bosq, Mathieu,Bertran, Pascal,Degeai, Jean-Philippe,et al. Geochemical signature of sources, recycling and weathering in the Last Glacial loess from the Rhone Valley (southeast France) and comparison with other European regions[J],2020,42.
APA	Bosq, Mathieu,Bertran, Pascal,Degeai, Jean-Philippe,Queffelec, Alain,&Moine, Olivier.(2020).Geochemical signature of sources, recycling and weathering in the Last Glacial loess from the Rhone Valley (southeast France) and comparison with other European regions.AEOLIAN RESEARCH,42.
MLA	Bosq, Mathieu,et al."Geochemical signature of sources, recycling and weathering in the Last Glacial loess from the Rhone Valley (southeast France) and comparison with other European regions".AEOLIAN RESEARCH 42(2020).