Sedimentation and erosion processes in Middle to Late Pleistocene sequences exposed in the brickyard of Langenlois/Lower Austria

Thiel, Christine; Terhorst, Birgit; Jaburová, Iva; Buylaert, Jan‐Pieter; Murray, Andrew; Fladerer, Florian A.; Damm, Bodo; Frechen, Manfred; Ottner, Franz

doi:10.1016/j.geomorph.2011.02.011

Cited by 29 publications

(19 citation statements)

References 34 publications

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“…The complex topography with several palaeodepressions along the loess wall in the brickyard has already been pointed out in early works (Pécsi, 1979). This interpretation would be similar to the topographically controlled sediment trap described in Thiel et al (2011d); luminescence dating at Langenlois, Lower Austria M A N U S C R I P T…”

supporting

confidence: 71%

Revisiting the loess/palaeosol sequence in Paks, Hungary: A post-IR IRSL based chronology for the ‘Young Loess Series’

Thiel

Horváth

Frechen

2014

Quaternary International

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In Hungary, many loess/palaeosol sequences have been found to be discontinuous. In order to allow for correlations with other Quaternary records, reliable chronologies are needed. We therefore apply post-IR infrared (IR) stimulated luminescence (post-IR IRSL; pIRIR 290 ) dating to the uppermost 20 m of the loess sequence at Paks. The pIRIR 290 ages are compared with blue quartz OSL ages to test for potential age overestimation due to poor signal re-setting, and the observed good agreement is taken to imply that the more difficult to bleach pIRIR 290 signal was reset prior to deposition. Our pIRIR 290 based chronology reveals that most of the Late Pleistocene loess was deposited during marine isotope stage (MIS) 3 and during the Last Glacial Maximum (LGM). This is in disagreement with formerly published ages. The discrepancy can most likely be explained by anomalous fading (resulting in an age underestimate); this conclusion is supported by our uncorrected 'standard' IRSL ages. We further confirm that the Basaharc Double soil complex can be correlated with MIS 7; the underlying loess and soils cannot be dated accurately because the pIRIR 290 signal approaches saturation. Keywords: Late Pleistocene; Middle Pleistocene; loess; OSL; post-IR IRSL; Hungary M A N U S C R I P T A C C E P T E DACCEPTED MANUSCRIPT 2 IntroductionThe importance of loess/palaeosol sequences to the reconstruction of the landscape evolution and the palaeoenviroment in the Carpathian Basin has been pointed out by several studies (e.g. Bronger, 1975Bronger, , 2003 Pécsi and Richter, 1996). In regions thought to be dominated by continuous loess deposits such as the Chinese loess plateau (e.g. Kukla, 1987) and the southeast Carpathian Basin (Vojvodina region; e.g. Marković et al., 2008Marković et al., , 2011 Fitzsimmons et al., 2012) to marine isotope stage (MIS) 13, the BA soil to MIS 11, and the BD soil complex to MIS 9 and 7. The first 'absolute' ages of the MB soil were presented by Borsy et al. (1979). At Mende ( Fig. 1), they dated the loess above the MB soil to 105 ± 17 ka using thermoluminescence (TL). In Paks (Fig. 1), the loess underlying this soil was dated to 125 ± 20 ka; they concluded that the MB soil represents the last interglacial. In contrast, Wintle and Packman (1988) argued, based on their TL data for the loess underlying the Mende Upper soil (Mende felsı; MF, also subdivided into MF 1 and MF 2 ), that the MB cannot be correlated with the last interglacial, but has to be much older. Singhvi et al. (1989) claimed that the BD 2 soil (therein called F 3 after Bronger (1975)) corresponds to the last interglacial. Several studies (Zöller et al., 1994; Oches and McCoy, 1995;Frechen et al., 1997; Novothny et al., 2002) have now identified the MF 2 as the last interglacial palaeosol, thus placing the BD 1 -BD 2 soil complex, the BA and the MB soil all in the Middle Pleistocene. Zöller et al. (1994) presented TL ages of 133 ± 15 ka (between BD 1 and BD 2 ) and 135 ± 12 ka (below BD 2 ) for the sequence in Basaharc (Fig. 1...

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supporting

confidence: 71%

Revisiting the loess/palaeosol sequence in Paks, Hungary: A post-IR IRSL based chronology for the ‘Young Loess Series’

Thiel

Horváth

Frechen

2014

Quaternary International

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“…Alappat et al 2010;Thiel et al 2010) and loess (e.g. Thiel et al 2011a;Wacha & Frechen 2011). Murray et al (2009) showed that the IRSL trap in sand-sized K-feldspars lies above 400°C and that preheats >300°C could be used for IRSL measurements.…”

mentioning

confidence: 99%

A robust feldspar luminescence dating method for Middle and LatePleistocene sediments

Buylaert

Jain

Murray

et al. 2012

Boreas

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470

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Luminescence dating is used extensively to provide absolute chronologies for Late Pleistocene sediments. Nowadays, most optical dates are based on quartz optically stimulated luminescence (OSL). However, the application of this signal is usually limited to the last ∼100 ka because of saturation of the quartz luminescence signal with dose. In contrast, the feldspar infrared stimulated luminescence (IRSL) dose–response curve grows to much higher doses; this has the potential to extend the datable age range by a factor of 4–5 compared with quartz OSL. However, it has been known for several decades that this IRSL signal is unstable, and this instability often gives rise to significant age underestimation. Here we test against independent age control the recently developed feldspar post‐IR IRSL approach to the dating of sediments, which appears to avoid signal instability. A physical model explaining our observations is discussed, and the method is shown to be accurate back to 600 ka. The post‐IR IRSL signal is reduced by exposure to daylight more slowly than that from quartz and low‐temperature IRSL, preventing its general application to young (e.g. Holocene) sediments. Nevertheless, this new approach is widely applicable (feldspar of appropriate luminescence behaviour is even more ubiquitous than quartz). These characteristics make this a method of great importance for the dating of Middle and Late Pleistocene deposits.

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“…It has been shown that pIRIR 225 signals show lower to negligible fading, and that measured g-values might not be representative for the fading rates over geological time (e.g. THIEL et al, 2011b). Even though we measured g-values of up to 2%/decade for our samples, we did not apply any fading correction, but acknowledge that this may result in an underestimate of the age.…”

Section: The Chronology Of the Middle Pleistocene Loess Section šArenmentioning

confidence: 91%

The chronology of the Šarengrad II loess-palaeosol section (Eastern Croatia)

Wacha¹,

Galović²,

Koloszár³

et al. 2013

Geol Cro

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A 23m thick succession of Quaternary deposits was investigated at Šarengrad, Eastern Croatia. A geochronological study was performed on loess samples using luminescence dating. An elevated temperature post-IR infrared stimulated luminescence (post-IR IRSL) dating protocol was applied. Performance tests showed that the protocol is suitable for the samples under study. The post-IR IRSL based chronology implies that, contradictory to previous correlations, a Middle Pleistocene loess-palaeosol sequence is exposed at Šarengrad II and not the Last Glacial -Interglacial cycle. Based on ages, the lowermost loess is correlated to oxygen isotope stage (OIS) 9-10 and the double palaeosol at the top of the section most likely correlates with OIS7. The Last Glacial record is exposed at the nearby Šaren grad I section. Furthermore, a heavy and light mineral analysis was performed on the investigated section as well as on the previously investigated Šarengrad I section, showing that the mineral association is typical for Quaternary deposits of the Pannonian basin.

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Sedimentation and erosion processes in Middle to Late Pleistocene sequences exposed in the brickyard of Langenlois/Lower Austria

Cited by 29 publications

References 34 publications

Revisiting the loess/palaeosol sequence in Paks, Hungary: A post-IR IRSL based chronology for the ‘Young Loess Series’

Revisiting the loess/palaeosol sequence in Paks, Hungary: A post-IR IRSL based chronology for the ‘Young Loess Series’

A robust feldspar luminescence dating method for Middle and LatePleistocene sediments

The chronology of the Šarengrad II loess-palaeosol section (Eastern Croatia)

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