Late Glacial erosion and pedogenesis dynamics: Evidence from high-resolution lacustrine archives and paleosols in south Bohemia (Czech Republic)

Hošek, Jan; Pokorný, Petr; Prach, Jindřich; Lisá, Lenka; Grygar, Tomáš Matys; Knésl, Ilja; Trubač, Jakub

doi:10.1016/j.catena.2016.11.022

Cited by 15 publications

(16 citation statements)

References 59 publications

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“…During the last few decades, several studies have noted the potential of lake sediments to record physical erosion (Giguet-Covex et al, 2011;Simonneau et al, 2013;Sabatier et al, 2014;Bajard et al, 2016;, changes in the degree of soil weathering (Dearing et al, 2001;Arnaud et al, 2012;Brisset et al, 2013;Bajard et al, 2017), pedogenetic processes (Mourier, 2008;Mourier et al, 2008;Giguet-Covex et al, 2011;Malkiewicz et al, 2016;Hošek et al, 2017), and the progressive and regressive phases of pedogenesis (Brisset et al, 2013;Malkiewicz et al, 2016;Bajard et al, 2017). Lakes sediments indeed store soil particles obtained from catchment fluxes and erosion triggered by human activities and/or climatic changes that correspond to soil development at the date of storage, providing a record of their evolution.…”

Section: Introductionmentioning

confidence: 99%

Long-term changes in alpine pedogenetic processes: Effect of millennial agro-pastoralism activities (French-Italian Alps)

et al. 2017

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Section: Introductionmentioning

confidence: 99%

Long-term changes in alpine pedogenetic processes: Effect of millennial agro-pastoralism activities (French-Italian Alps)

et al. 2017

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“…An additional source was probably loess washed from watersheds, as indicated by the high concentration of medium/coarse silt and the substantially elevated concentration of calcium in these sedimentary strata (Hošek et al . ).…”

Section: Results and Interpretationmentioning

confidence: 97%

“…Bathymetry and stratigraphical cross‐sections of the Veselí_1 and Veselí_2 palaeo‐lake basins together with the results of electrical resistivity tomography (adopted from Hošek et al . ), the location of the VSC sampling core and the calibrated radiocarbon ages. The orange star refers to the location of the pine branch within the lacustrine sediment exposed in a temporary artificial outcrop (the photograph's bottom right).…”

Section: Results and Interpretationmentioning

confidence: 99%

“…Overall, 21 radiocarbon ages are presented in this study, some of them already published (Pokorný ; Hošek et al . , ; Table ). Samples were prepared for 14 C accelerated mass spectrometry (AMS) and dated at the Poznań Radiocarbon Laboratory in Poland (abbr.…”

Section: Methodsmentioning

confidence: 96%

“…Within the low‐lying water‐saturated terrain along the Lužnice River, loess‐like sediments were preserved only in isolated islands, due to intensive decalcification and consequent erosion during the Early Holocene (Hošek et al . ). Middle and Upper Pleistocene fluvial sandy gravels are preserved discontinuously along the Lužnice River as alluvial terraces with surfaces 5 and 8 m, respectively, above the Holocene flood‐plain (Chábera & Vojtěch ).…”

Section: Regional Settingsmentioning

confidence: 97%

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Buried Late Weichselian thermokarst landscape discovered in the Czech Republic, central Europe

Hošek

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Křížek

et al. 2019

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Pronounced climatic warming associated with the Late Weichselian Pleniglacial‐to‐Lateglacial transition caused considerable environmental changes throughout the former periglacial zones (in Europe ~53°–46°N). During permafrost degradation and subsequent ground subsidence (i.e. thermokarst processes), the landscape changed rapidly. In this study we investigated a flat mid‐altitude area in south Bohemia, Czech Republic, lying close to the southern limit of the Weichselian permafrost. We discovered palaeo‐lake basins with sedimentary infillings up to 11 m in depth. According to radiocarbon and palynostratigraphical dating, these basins were formed at the onset of the Late Pleniglacial‐to‐Lateglacial transition, whereas the smaller depressions were formed later. We suggest that the basins resulted from thermal and fluvio‐thermal erosion of the former permafrost and represent remnants of discontinuous gullies and possibly collapsed frost mounds (pingo/lithalsa scars). The formation of this a fossil thermokarst landscape was climatically driven and multiple phased, with the major phase during the climatic warming and wetting at the onset of GI‐1e (Bølling) and the minor phase during GI‐1c (Allerød). This study enhances knowledge of the palaeogeography of the former European periglacial zone by showing that Late Pleistocene thermokarst activity could have had a significant impact on the evolution of the landscape of at least some regions of central Europe along the southern limit of the continuous permafrost zone. The research also points to a similar history for the physical transformation of the landscape of the former European periglacial zone and current thermokarst landscapes and could be a valuable source of information with respect to the future transformation of the Arctic under conditions of ongoing global warming.

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Climate control on stacked paleosols in the Pleistocene of the Po Basin (northern Italy)

Bruno

Marchi

Bertolini

et al. 2020

J Quaternary Science

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Paleosols are recurrent features in alluvial successions and provide information about past sedimentary dynamics and climate change. Through sedimentological analysis on six sediment cores, the mud-dominated succession beneath the medieval 'Two Towers' of Bologna was investigated down to 100 m depth. A succession of weakly developed paleosols (Inceptisols) was identified. Four paleosols (P1, P2, P3 and PH) were radiocarbon-dated to 40-10 cal ka BP. Organic matter and CaCO 3 determinations indicate low groundwater levels during soil development, which spanned periods < 5 ka. The development and burial of soils, which occurred synchronously in the Bologna region and in other sectors of the Po Plain, are interpreted to reflect climatic and eustatic variations. Climatic oscillations, at the scale of the Bond cycles, controlled soil development and burial during Marine Isotope Stage (MIS) 3 (P1 and P2). Rapid sea-level oscillations probably induced soil development at the MIS 3/2 transition (P3) and favored burial of PH after 10 ka BP. Weakly developed paleosols in alluvial successions can provide clues to millennial-scale climatic and environmental variations. In particular, the paleosol-bearing succession of the Po Plain represents an unprecedent record of environmental changes across the Late Pleistocene (MIS 3 and 2) in the Mediterranean region.

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Late Glacial erosion and pedogenesis dynamics: Evidence from high-resolution lacustrine archives and paleosols in south Bohemia (Czech Republic)

Cited by 15 publications

References 59 publications

Long-term changes in alpine pedogenetic processes: Effect of millennial agro-pastoralism activities (French-Italian Alps)

Long-term changes in alpine pedogenetic processes: Effect of millennial agro-pastoralism activities (French-Italian Alps)

Buried Late Weichselian thermokarst landscape discovered in the Czech Republic, central Europe

Climate control on stacked paleosols in the Pleistocene of the Po Basin (northern Italy)

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