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Non-magnetic indicators of pedogenesis related to loess magnetic enhancement and depletion: Examples from the Czech Republic and southern Siberia

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dc.title Non-magnetic indicators of pedogenesis related to loess magnetic enhancement and depletion: Examples from the Czech Republic and southern Siberia en
dc.contributor.author Bábek, Ondřej
dc.contributor.author Chlachula, Jiří
dc.contributor.author Matys Grygar, Tomáš
dc.relation.ispartof Quaternary Science Reviews
dc.identifier.issn 0277-3791 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2011-04
utb.relation.volume 30
utb.relation.issue 7-8
dc.citation.spage 967
dc.citation.epage 979
dc.type article
dc.language.iso en
dc.publisher Pergamon Elsevier Science Ltd. en
dc.identifier.doi 10.1016/j.quascirev.2011.01.009
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S0277379111000242
dc.subject Pedogenesis en
dc.subject Sediment color en
dc.subject Diffuse reflectance spectroscopy en
dc.subject Cation exchange capacity en
dc.subject Magnetic susceptibility en
dc.subject Long-distance stratigraphic correlation en
dc.description.abstract We carried out a multiparameter investigation for non-magnetic proxies of the intensity of pedogenesis in loess/paleosol sections from two different climate settings, Dolni Vestonice, central Europe, and Krasnogorskoye, southern Siberia. The work was performed in order to clarify the problem of two opposite scenarios of magnetic susceptibility (MS) patterns in these two profiles, the "Chinese" model with magnetically enhanced paleosols and the "Siberian/Alaskan" model with magnetically depleted paleosols. The age constraints on the Krasnogorskoye section were inferred from an independent correlation with the well-dated Dolni Vestonice section, based on MS and sediment color (CIE L*), and with the MS log from Lake Baikal. The pedologic description of the loess/paleosol sections and their correlation was considerably improved by the use of Vis spectral proxies (CIE L*, reflectance in the red band); their weathering intensity can be effectively characterized by diffuse reflectance spectroscopy (DRS) and geochemical (CEC and Rb/Sr) proxies. Whereas the MS is strongly dependent on the type of soil (chernozems vs. brown soils), the geochemical proxies, in particular CEC, proved to be relatively independent of the soil type. These parameters are less affected by region-specific conditions than the MS signal. The non-magnetic proxies indicate relatively dissimilar climatic trends at the two sites during the last glacial-interglacial cycle. A long-distance correlation, based solely on the MS signal, can be adversely affected by switching between the Chinese and the Siberian/Alaskan magnetic modes, this having been observed at the Krasnogorskoye section. In general, no single universal proxy of weathering or pedogenesis intensity would be applicable across broad regions or considerable climatic gradients. Paleoclimatologic interpretations of large regions should always be based on a carefully designed, multiproxy approach. (C) 2011 Elsevier Ltd. All rights reserved. en
utb.faculty Faculty of Logistics and Crisis Management
dc.identifier.uri http://hdl.handle.net/10563/1002175
utb.identifier.rivid RIV/70883521:28160/11:43865341!RIV12-MSM-28160___
utb.identifier.obdid 43865343
utb.identifier.scopus 2-s2.0-79952438602
utb.identifier.wok 000289128900016
utb.source j-wok
dc.date.accessioned 2011-08-16T15:06:36Z
dc.date.available 2011-08-16T15:06:36Z
utb.contributor.internalauthor Chlachula, Jiří
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