Arid
DOI10.1016/j.quaint.2015.11.122
Granulometrical, mineralogical and geochemical characterization of loess deposits in the Tajo Basin
Calvo, F. R.1; Sanchez, J.1; Acosta, A.2; Wolf, D.3; Faust, D.3
通讯作者Calvo, F. R.
来源期刊QUATERNARY INTERNATIONAL
ISSN1040-6182
EISSN1873-4553
出版年2016
卷号407页码:14-28
英文摘要

Loess research has the merit of enabling reconstructions of Pleistocene sedimentation dynamics in many parts of the world. However, there is still very few information regarding the occurrence of loess deposits in the Mediterranean area, even though such records may provide a unique opportunity to investigate landscape evolution for a period for which terrestrial archives are very rare in this region. This paper presents the first results of investigations on a loess sequence in the middle Tajo Valley in central Spain. Findings from detailed granulometrical, mineralogical, geochemical, and grain morphological analyses help to give a first overview on character and composition of these deposits. Very high levels of carbonates (similar to 60%), but also of gypsum, both to large extents of primary origin, indicate the incorporation of material derived from marls and limestone. Furthermore, we found evidence that allows deduction of possible loess proveniences more precisely. Dolomite contents of up to 20% indicate that the Iberian Range might have been an important source area of loess sediments. The fact that these uplands are located to the east seems to be opposed to the common assumption of prevailing west winds for glacial periods. The studied sequence (Paraiso profile) is one of seven sections that have been investigated as part of a programme to reconstruct Upper Pleistocene landscape dynamics in central Spain. In this context, the detailed characterisation of sediment properties is crucial for discussing loess proveniences and sedimentary environments. (C) 2015 Elsevier Ltd and INQUA. All rights reserved.


英文关键词Grain-size analysis Mineralogy Geochemistry Carbonates Loess Spain
类型Article
语种英语
国家Spain ; Germany
收录类别SCI-E
WOS记录号WOS:000376727500003
WOS关键词GLACIAL LOESS ; DESERT LOESS ; PALEOSOL SEQUENCE ; SIZE ANALYZER ; PEORIA LOESS ; ORIGIN ; DUST ; DIFFRACTION ; SEDIMENTS ; PROVENANCE
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/195796
作者单位1.Univ Castilla La Mancha, Dept Ingn Civil & Edificac, ETSI Caminos Canales & Puertos, Ciudad Real, Spain;
2.Univ Castilla La Mancha, Dept Quim Fis, Fac CC Quim, Ciudad Real, Spain;
3.Inst Geog, Lehrstuhl Phys Geog, Dresden, Germany
推荐引用方式
GB/T 7714
Calvo, F. R.,Sanchez, J.,Acosta, A.,et al. Granulometrical, mineralogical and geochemical characterization of loess deposits in the Tajo Basin[J],2016,407:14-28.
APA Calvo, F. R.,Sanchez, J.,Acosta, A.,Wolf, D.,&Faust, D..(2016).Granulometrical, mineralogical and geochemical characterization of loess deposits in the Tajo Basin.QUATERNARY INTERNATIONAL,407,14-28.
MLA Calvo, F. R.,et al."Granulometrical, mineralogical and geochemical characterization of loess deposits in the Tajo Basin".QUATERNARY INTERNATIONAL 407(2016):14-28.
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