气候变化领域集成服务门户(CCPortal): Late Glacial sediments of the Stará Jímka paleolake and the first finding of Laacher See Tephra in the Czech Republic

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DOI	10.1007/s00531-018-1658-y
	Late Glacial sediments of the Stará Jímka paleolake and the first finding of Laacher See Tephra in the Czech Republic
	Procházka V.; Mizera J.; Kletetschka G.; Vondrák D.
发表日期	2019
ISSN	14373254
起始页码	357
结束页码	378
卷号	108 期号:1
英文摘要	The Late Glacial sedimentary sequence of the Stará Jímka paleolake (Bohemian Forest, Czech Republic) is characterized by the prevalence of detrital minerals with an elevated proportion of organic matter and abundant diatom valves in relatively warm periods. The mineral debris originated mainly from local migmatites and mica-schists (or glacial and deluvial deposits derived from the same material). Low background contents of CaO (< 0.20 wt%) and Na 2 O (< 0.50 wt%) reflect chemical weathering. Correlation analysis of trace elements shows that the mineral debris concentrates Rb, Cs, Ga, Cr, Zr, Hf, light rare earth elements, Th, U, Pb, Ba, Sr and weakly Zn, whereas Mo, Co, Se, As, Ni, Cu, Br and weakly Au are allocated predominantly to sulphides and organic matter. The sequence contains a continuous horizon with the Laacher See Tephra (LST), causing contrasting maxima of Na, Ca, Cl and Nb in bulk composition. While the phonolitic tephra corresponds to the lower part of the middle LST unit it also contains phosphorus-rich relicts of older sediments with small euhedral (air-transported) volcanic crystals. Such sediments may have occurred in depressions at an older volcano prior to the major Laacher See eruption (~ 12,880 cal. BP). © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Bohemian Forest; Bølling-Allerød interstadial; Laacher See Tephra; Mineralogy; Trace elements; Younger Dryas
语种	英语
scopus关键词	chemical weathering; diatom; lacustrine deposit; late glacial; mineralogy; organic matter; sedimentary sequence; tephra; trace element; Czech Republic; Germany; Laacher See; Rhineland-Palatinate; Bacillariophyta
来源期刊	International Journal of Earth Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147880
作者单位	Institute of Hydrogeology, Engineering Geology and Applied Geophysics, Charles University, Albertov 6, Prague 2, 128 43, Czech Republic; Nuclear Physics Institute, Czech Academy of Sciences, Hlavní 130, Husinec-Řež, 250 68, Czech Republic; Institute of Rock Structure and Mechanics, Czech Academy of Sciences, V Holešovičkách 41, Prague 8, 182 09, Czech Republic; Institute of Geology, Czech Academy of Sciences, Rozvojová 269, Prague 6, 165 00, Czech Republic; Geophysical Institute, University of Alaska Fairbanks, 903 N Koyukuk Drive, Fairbanks, AK, United States; Institute for Environmental Studies, Charles University, Benátská 2, Prague 2, 128 01, Czech Republic
推荐引用方式 GB/T 7714	Procházka V.,Mizera J.,Kletetschka G.,et al. Late Glacial sediments of the Stará Jímka paleolake and the first finding of Laacher See Tephra in the Czech Republic[J],2019,108(1).
APA	Procházka V.,Mizera J.,Kletetschka G.,&Vondrák D..(2019).Late Glacial sediments of the Stará Jímka paleolake and the first finding of Laacher See Tephra in the Czech Republic.International Journal of Earth Sciences,108(1).
MLA	Procházka V.,et al."Late Glacial sediments of the Stará Jímka paleolake and the first finding of Laacher See Tephra in the Czech Republic".International Journal of Earth Sciences 108.1(2019).