Towards understanding paleosols in Southern Levantine eolianites: Integration of micromorphology, environmental magnetism and mineralogy

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2009 > Vol6 No.2

	Towards understanding paleosols in Southern Levantine eolianites: Integration of micromorphology, environmental magnetism and mineralogy
	Tsatskin, Alexander ; Gendler, Tatyana S. ; Heller, Friedrich ; Dekman, Igal ; Frey, Gitti L.
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2009-06
卷号	6 期号:2 页码:113–124
关键词	Coastal sand loess deposition microfabric hierarchy magnetic enhancement paramagnetic phyllosilicates Mossbauer effect
ISSN号	1672-6316
通讯作者	Tsatskin, A
英文摘要	The paper addresses the controversial question of the role of clay-sized dust in the formation of paleosols in coastal eolianites, Israel. At the Habonim type section, the pedocomplex dated by archaeology and luminescence to 45-135 ka ago shows at least three paleosols, not separated by non-soil sediments. The oldest reddish paleosol (apparently related to MIS 5) is magnetically enhanced, leached from carbonates, with signs of bioturbation and strongly aged clay coatings. The reddening is due to very fine, similar to 20 nm, poorly crystallized, super-paramagnetic (SP) hematite, as determined by Mossbauer studies. In subsoil, lithorelics of eolianite are found. Over time, the soil surface aggraded due to accelerated fine dust accumulation alongside local slope wash. On younger materials formed magnetically depleted vertisols, dominated by smectite-type expandable paramagnetic clays. In thin sections, vertisols exhibit strong stipple-speckled and striated b-fabric due to shrink-swell processes, impregnative calcite nodules and Fe-Mn redistribution. The uppermost hydric vertisol shows the strongest expression of juxtaposed features of recurrent calcite and Fe precipitation. This paleosol developed on colluvial soil materials, as evidenced by mixing of clay coated and uncoated grains of quartz and calcite allochems. Mossbauer spectra show high amounts of Fe(III) incorporated in the clay structure, low amounts of SP goethite and absence of SP hematite. Whilst magnetic susceptibility drops in vertisols to minimal values, ferrimagnetic grain sizes increase. The latter along with differences in the hierarchy of microfabric features is taken as indication for lithologic discontinuities which may have resulted from continuous, albeit variable and low-intensity, input of eolian clay from both remote Saharan and local sources, roughly dated to the earlier to middle part of the Last Glacial.
语种	英语
公开日期	2013-08-14
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/6012]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2009_Vol6 No.2
推荐引用方式 GB/T 7714	Tsatskin, Alexander,Gendler, Tatyana S.,Heller, Friedrich,et al. Towards understanding paleosols in Southern Levantine eolianites: Integration of micromorphology, environmental magnetism and mineralogy[J]. JOURNAL OF MOUNTAIN SCIENCE,2009,6(2):113–124.
APA	Tsatskin, Alexander,Gendler, Tatyana S.,Heller, Friedrich,Dekman, Igal,&Frey, Gitti L..(2009).Towards understanding paleosols in Southern Levantine eolianites: Integration of micromorphology, environmental magnetism and mineralogy.JOURNAL OF MOUNTAIN SCIENCE,6(2),113–124.
MLA	Tsatskin, Alexander,et al."Towards understanding paleosols in Southern Levantine eolianites: Integration of micromorphology, environmental magnetism and mineralogy".JOURNAL OF MOUNTAIN SCIENCE 6.2(2009):113–124.