Stratigraphy, and spatial and temporal paleoclimatic trends in Southeastern/Eastern European loess–paleosol sequences

Buggle, Björn; Hambach, Ulrich; Glaser, Bruno; Gerasimenko, Natalia; Marković, Slobodan B.; Glaser, Irina; Zöller, Ludwig

doi:10.1016/j.quaint.2008.07.013

Cited by 162 publications

(157 citation statements)

References 44 publications

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“…Correlation between the susceptibility curves from (1) Serbian Titel loess sections, (2) nearby Romanian Mircea Voda section [33], (3) Bulgarian Koriten section [34], (4) Luochuan section in China, and (5) deep-sea oxygen isotope curve [35] (Figure 7) provide specific differences of investigated paleoclimatic signals. For example, Mircea Voda section (44°19′15″N, 28°11′21″E, about 500 km away from the Titel section) and Koriten section (43°56′N, 27°45′E, about 700 km away from the Titel section), both have  values of V-S 4 paleosol and V-S 3 are very close, unlike the Titel section, which show clear differences (Figure 2).…”

Section: Excessive Moisture Also Can Reduce Magnetic Susceptibilitymentioning

confidence: 99%

The magnetic properties of Serbian loess and its environmental significance

Liu

Lü

et al. 2012

Chin. Sci. Bull.

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This paper reports a loess-paleosol sequence located in the Danube River basin, Serbia, which formed at least since the latest part of the early Pleistocene, and before the paleomagnetic B/M boundary. Various magnetic parameters of the Serbian V-L 1 -V-S 4 loess-paleosol sequence have been measured and analyzed in the Titel Loess Plateau. These parameters show a very similar magnetic behavior compared with that of the Chinese loess. There is a general positive relationship between magnetic susceptibility () and pedogenesis. The main contributors to  are the magnetic grains of SP (superparamagnetic) and SD (single domain) magnetic domains, while MD (multi domain) contributes only a small percentage. The difference in  between loess and paleosol mainly is caused by pedogenesis. The very fine magnetic minerals increase gradually with increasing soil development (from loess to soil), and they lead to higher . The thermomagnetic curves show thatmagnetic minerals in the loess layers are magnetite and maghemite, both providing a major contribution to . In contrast the paleosol layers mainly are composed of magnetite, with almost no or a very small amount of maghemite, as implied by a reversible thermomagnetic behavior. This indicates that pedogenic conditions during V-S 3 and V-S 4 strong soil development have resulted in maghemite that is no longer stable, and has been resolved or converted to other stable phase minerals. This likely indicates that soil moisture during V-S 3 and V-S 4 development exceeded a critical condition of maghemite stability. Serbian loess, magnetic properties, pedogenesis, paleoenvironment Citation:Liu X M, Liu Z, Lü B, et al. The magnetic properties of Serbian loess and its environmental significance.

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Section: Excessive Moisture Also Can Reduce Magnetic Susceptibilitymentioning

confidence: 99%

The magnetic properties of Serbian loess and its environmental significance

Liu

Lü

et al. 2012

Chin. Sci. Bull.

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“…Generally, this varies between primary loess and soil horizons. Soils generally experience an enrichment in magnetic minerals (higher MS), in comparison to the primary loess (Buggle et al, 2009;Ding et al, 2002;Heller and Evans, 1995;Heller and Liu, 1984;Maher and Thompson, 1992;Zhou et al, 1990). The contrast between high and low MS in paleosols and primary loess, respectively, typically forms the basis for the stratigraphic differentiation of loess deposits.…”

Section: Impacts Of Wind Strength On Magnetic Susceptibility Variationsmentioning

confidence: 99%

Eolian dust dispersal patterns since the last glacial period in eastern Central Asia: insights from a loess-paleosol sequence in the Ili Basin

Song

Fitzsimmons

et al. 2018

Clim. Past

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Abstract. The extensive loess deposits of the Eurasian midlatitudes provide important terrestrial archives of Quaternary climatic change. As yet, however, loess records in Central Asia are poorly understood. Here we investigate the grain size and magnetic characteristics of loess from the Nilka (NLK) section in the Ili Basin of eastern Central Asia. Weak pedogenesis suggested by frequency-dependent magnetic susceptibility (χ fd %) and magnetic susceptibility (MS) peaks in primary loess suggest that MS is more strongly influenced by allogenetic magnetic minerals than pedogenesis, and may therefore be used to indicate wind strength. This is supported by the close correlation between variations in MS and proportions of the sand-sized fraction. To further explore the temporal variability in dust transport patterns, we identified three grain size end-members (EM1, mode size 47.5 µm; EM2, 33.6 µm; EM3, 18.9 µm) which represent distinct aerodynamic environments. EM1 and EM2 are inferred to represent grain size fractions transported from proximal sources in short-term, near-surface suspension during dust outbreaks. EM3 appears to represent a continuous background dust fraction under non-dust storm conditions. Of the three end-members, EM1 is most likely the most sensitive recorder of wind strength. We compare our EM1 proportions with mean grain size from the Jingyuan section in the Chinese loess plateau, and assess these in the context of modern and Holocene climate data. Our research suggests that the Siberian High pressure system is the dominant influence on wind dynamics, resulting in loess deposition in the eastern Ili Basin. Six millennial-scale cooling (Heinrich) events can be identified in the NLK loess records. Our grain size data support the hypothesis that the Siberian High acts as teleconnection between the climatic systems of the North Atlantic and East Asia in the high northern latitudes, but not for the mid-latitude westerlies.

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“…The coarse material (coarse silts and sand) comes from sources relatively close to the site, while the fine material (clays and fine silts) has been transported from more distant areas as well (probably hundreds to a thousand km away from the site), via high-altitude atmospheric transport (Duce, 1995;Pye, 1995). Geochemical analyses of eolian deposits in the southern Ukraine correlated with the presence of sand units south of Stayky (Buggle et al, 2009) and have been interpreted as indicating a predominant northern wind direction. One hypothesis, first suggested by Tutkovsky (1910), is that dust has been brought by katabatic winds blowing down the Fennoscandian ice sheet, which margin, at the maximum extent, was at about 400 km north of Stayky (Svendsen et al, 2004).…”

Section: Grain Size Analysismentioning

confidence: 99%

North Atlantic abrupt climatic events of the last glacial period recorded in Ukrainian loess deposits

et al. 2011

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Abstract. Loess deposits are widely distributed in the Northern Hemisphere, where they have recorded not only the glacial-interglacial cycles, but also millennial-timescale changes resembling those in marine and ice cores. Such abrupt variations are clearly marked in western European series, but have not yet been evidenced in the East of the continent. Here we present results of the high-resolution investigation of a Weichselian Upper Pleniglacial loess sequence (∼38-15 ka) from Stayky, Ukraine. The stratigraphy shows an alternation of loess horizons and embryonic soils, similar to sequences from western Europe. Similarities are also found between variations of a grain-size index (ratio between coarse and fine material fractions) in Stayky and in western European profiles. Based on these similarities and in agreement with the luminescence dates, the embryonic soils are associated with the Greenland interstadials (GIS) 7 to 2, and the Vytachiv paleosol at the base of the sequence, with GIS 8. Pollen analysis indicates a wetter climate for these interstadials, allowing the development of arboreal vegetation, than for the stadials, which are marked by loess formation. The grain-size index reaches the highest values for intervals correlated with the Heinrich events 3 and 2. Thus, it appears that the North Atlantic abrupt climate changes have extended their influence and modulated the loess sedimentation at least as far as eastern Europe. This result is supported by recent

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Stratigraphy, and spatial and temporal paleoclimatic trends in Southeastern/Eastern European loess–paleosol sequences

Cited by 162 publications

References 44 publications

The magnetic properties of Serbian loess and its environmental significance

The magnetic properties of Serbian loess and its environmental significance

Eolian dust dispersal patterns since the last glacial period in eastern Central Asia: insights from a loess-paleosol sequence in the Ili Basin

North Atlantic abrupt climatic events of the last glacial period recorded in Ukrainian loess deposits

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