Arid
DOI10.1002/jqs.2896
Elevated dust deposition in Tierra del Fuego (Chile) resulting from Neoglacial Darwin Cordillera glacier fluctuations
Vanneste, Heleen1,2; De Vleeschouwer, Franscois1,2; Bertrand, Sebastien3; Martinez-Cortizas, Antonio4; Vanderstraeten, Aubry5; Mattielli, Nadine5; Coronato, Andrea6; Piotrowska, Natalia7; Jeandel, Catherine8; Le Roux, Gael1,2
通讯作者Vanneste, Heleen
来源期刊JOURNAL OF QUATERNARY SCIENCE
ISSN0267-8179
EISSN1099-1417
出版年2016
卷号31期号:7页码:713-722
英文摘要

Atmospheric mineral dust is intrinsically linked with climate. Although dust flux variability on glacial-interglacial timescales is well documented, Holocene dust records remain scarce. To fill this gap, we conducted elemental, isotopic and sedimentological analyses on a peat core from the Karukinka Natural Park in Tierra del Fuego. An 8000-year-old mineral dust record was extracted indicating three periods of elevated dust deposition: (i) 8.1-7.4 cal ka BP, (ii) 4.2 cal ka BP and (iii) 2.4-1.4 cal ka BP. The two oldest peaks are related to volcanic eruptions of the Hudson and Monte Burney volcanoes, respectively. The most recent dust peak, however, has a rare earth element and neodymium isotopic composition that resembles the geochemical signature of outwash plain sediments from the Darwin Cordillera. Since the timing of this dust peak corresponds to a period of glacier retreat between Neoglacial advances III and IV, we infer that Holocene aeolian dust fluxes in southern Patagonia are mostly driven by glacial sediment availability. Our results underline the important role of glaciers in producing aeolian dust in high-latitude regions, and they imply that the current retreat of glaciers worldwide may result in elevated atmospheric dust loads. Copyright (C) 2016 John Wiley & Sons, Ltd.


英文关键词dust neodymium isotopes Neoglacial peat archive Tierra del Fuego
类型Article
语种英语
国家France ; Belgium ; Spain ; Argentina ; Poland
收录类别SCI-E
WOS记录号WOS:000388437800006
WOS关键词SEA-SURFACE TEMPERATURE ; PEAT BOG ; HOLOCENE GLACIATIONS ; SOUTHERN WESTERLIES ; DESERT DUST ; RECORD ; PATAGONIA ; FLUXES ; SHIFTS ; VARIABILITY
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
来源机构French National Research Institute for Sustainable Development
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/194718
作者单位1.Univ Toulouse, INP, UPS, EcoLab,Lab Ecol Fonct & Environm,ENSAT, Ave Agrobiopole, F-31326 Castanet Tolosan, France;
2.CNRS, EcoLab, F-31326 Castanet Tolosan, France;
3.Univ Ghent, Renard Ctr Marine Geol, Krijgslaan 281 S8, B-9000 Ghent, Belgium;
4.Univ Santiago de Compostela, Fac Biol, Dept Edafoloxia & Quim Agr, E-15782 Santiago De Compostela, Spain;
5.Univ Libre Bruxelles, DSTE, Dept Earth & Environm Sci, CP 160-02,Ave FD Roosevelt 50, B-1050 Brussels, Belgium;
6.CONICET CADIC, B Houssay 200, RA-9410 Ushuaia, Tierra Del Fueg, Argentina;
7.Silesian Tech Univ, Inst Phys, Dept Radioisotopes, Gliwice, Poland;
8.Univ Toulouse, LEGOS, CNRS, CNES,IRD,Observ Midi Pyrenees, 14 Ave Edouard Velin, F-31400 Toulouse, France
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GB/T 7714
Vanneste, Heleen,De Vleeschouwer, Franscois,Bertrand, Sebastien,et al. Elevated dust deposition in Tierra del Fuego (Chile) resulting from Neoglacial Darwin Cordillera glacier fluctuations[J]. French National Research Institute for Sustainable Development,2016,31(7):713-722.
APA Vanneste, Heleen.,De Vleeschouwer, Franscois.,Bertrand, Sebastien.,Martinez-Cortizas, Antonio.,Vanderstraeten, Aubry.,...&Le Roux, Gael.(2016).Elevated dust deposition in Tierra del Fuego (Chile) resulting from Neoglacial Darwin Cordillera glacier fluctuations.JOURNAL OF QUATERNARY SCIENCE,31(7),713-722.
MLA Vanneste, Heleen,et al."Elevated dust deposition in Tierra del Fuego (Chile) resulting from Neoglacial Darwin Cordillera glacier fluctuations".JOURNAL OF QUATERNARY SCIENCE 31.7(2016):713-722.
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