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  • 1
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    Climatic Fluctuations Reflected in Slope and Fluvial Systems of Polish Carpathians and their Foreland During Upper Quaternary (2015)
    De Gruyter
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    Publication Date: 2015-01-01
    Description: On continents, besides lake and bogs, we observe non-continuous sedimentation where particular layers or whole members represent time intervals of various lengths separated by breaks of different origin. Both, fluvial and slope sediments or forms carry climatic signal. By analyzing sources of sediments, factors of transfer, duration of deposition we reconstruct climatic changes (mainly temperature, precipitations and circulation of water). We order the collected records after age and tracing longitudinal profiles of slopes and river valleys. The slopes and valley floors inform us about spatial differentiation of extreme climatic-hydrological events and on their reflection in degradation or aggradation. All this information sums up the records collected in various projects or commissions like IGCP-158 and GLOCOPH (Starkel ed. 1982–1996; Starkel et al. 2007), Climatostratigraphy of the Holocene of Polish territory (Starkel et al. 2013) as well INTIMATE (Starkel et al. 2015; Gębica et al. 2015). It may be concluded that fluctuations in temperature combined with expansion of permafrost were the leading factors in transformation of landscape of analyzed area of Southern Poland during last cold stage, which is in contrary to the Holocene, when variations in humidity especially in frequency of extreme events played a leading role. The continental records very well express the role of transitional phases.
    Print ISSN: 0081-6434
    Topics: Geography
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  • 2
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    Reconstruction of Late Quaternary Neotectonic Movements and Fluvial Activity in Sikkimese-Bhutanese Himalayan Piedmont (2015)
    De Gruyter
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    Publication Date: 2015-01-01
    Description: In the part of Sikkimese-Bhutanese Himalaya the youngest Siwalik overthrust had not developed, and the piedmont zone with extensive fans forms a semicircular gulf dismembered by several faults and minor overthrusts. Some uplifted parts of older deformed alluvial fans contain the lenses of organic clays which were earlier dated at 22–34 ka BP byTo distinguish various alluvial formations and phases of tectonic activity the authors dated older levels in several localities by OSL method as well as investigated soil profiles. Most mature soils over elevated blocks built of coarse alluvia were dated between 50 and 60 ka BP. Probably the previous
    Print ISSN: 0081-6434
    Topics: Geography
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  • 3
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    Some Regularities of Mountain Relief Evolution (2013)
    De Gruyter
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    Publication Date: 2013-01-01
    Print ISSN: 0081-6434
    Topics: Geography
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  • 4
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    The Quaternary Transformation of Older Inherited Mountain Landscapes (2014)
    De Gruyter
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    Publication Date: 2014-01-01
    Description: The Quaternary transformation of the inherited mountain relief was controlled by three factors: cyclic climatic changes, resistance of the substratum and neotectonic uplift. Cyclic climatic fluctuations in the majority of European mountains were reflected in the alternation of interglacial and cold stages, the former characterized by a dominance of forest and chemical weathering, the latter by permafrost, solifluction, wind activity and, at higher elevations, by glacier advances. The transitional phases played an important role as periods of re-establishment of water circulation and transfer of regolith and sediment, formed during the previous cold or interglacial stage. The rates of degradation of inherited planation surfaces and slopes depend on bedrock resistance. In the case of less resistant flysch deposits, degradation during a single (last) cold stage reached 10 metres. Therefore, the higher planation levels may have been either better preserved on more resistant bedrock or even emphasized by cryoplanation processes. The lowest piedmont developed on less resistant beds was lowered to 50 m. In the young mountains, the Quaternary uplift may have played an additional role. In the case of uplift reaching or exceeding several hundred metres, the former fluvial forms were shifted to the cryonival or even nival (glacial) vertical zone where they became entirely transformed.
    Print ISSN: 0081-6434
    Topics: Geography
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  • 5
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    Reflection of climatic changes during interpleniglacial in the geoecosystems of South-Eastern Poland (2017)
    De Gruyter
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    Publication Date: 2017-10-06
    Description: About 70% of the last cold stage was taken by transitional phases of continuous fluctuations of climate and permafrost extension. All this is reflected especially well in slope types and the thickness of slope, fluvial and aeolian deposits. Very distinct and relatively fast changes took place around 33–30 ka BP: the aridification of climate with an ice sheet transgression, expansion of continuous permafrost and the onset of loess deposition. The greatest transformations of slopes and river valleys in the Carpathians and Subcarpathian Basins took place not in the coolest phases but during the Interpleniglacial. The authors exemplified a number of sites in Southern Poland documenting frequent fluctuations of climate and permafrost from that 25–30 ka long period. Calibrated dates of dated episodes correlate well with the δ18O curve from Greenland with frequent warmings. These rapid warmings are reflected in the higher rate of aggradation in valley floors and thick colluvial material deposited over slopes, both combined with a retreat of permafrost. The comparison with the Greenland 18O curve is valuable to establish a comparable chronology of events, even for such a distant area like Central-Eastern Europe.
    Print ISSN: 1733-8387
    Electronic ISSN: 1897-1695
    Topics: Archaeology , Geosciences
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  • 6
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    Progress in the holocene chrono-climatostratigraphy of Polish territory (2013)
    De Gruyter
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    Publication Date: 2013-03-01
    Description: The Holocene delivers a unique possibility to establish climatic stratigraphic boundaries based on detailed chronostratigraphy reflected in various facies of continental sediments, in their lithological parameters and organic remains. These sediments are dated by the 14C method in the case of organic remains, by counting annual laminations in lacustrine facies, and by dendrochronological method in the case of fluvial sediments.The existence of well dated profiles enables to reconstruct various climatic parameters like amplitudes of seasonal temperatures, types and frequency of extreme rainfalls and floods and, finally, to distinguish rare rapid changes and most frequent gradual ones. This reconstruction is based on the analogous effects of various types of present-day rainfalls.The current authors present a critical review of existing chronostratigraphic divisions starting from simple millennial division by Mangerud based on Scandinavian palynological stratigraphy of peat-bogs and Starkel’s concept based on fluctuations in rainfall and runoff regime reflected in fluvial and other facies of continental deposits.In the last decades, the calibration of 14C dates allowed a new approach to be used for the construction of the probability distribution function of these dates in various facies or types of sediments, which formed a background for distinguishing and correlating climatic phases and defining boundaries between them. These approaches have been creating new opportunities for revision of the existing chronostratigraphy.The aim of this paper is to present a revised version of chronostratigraphic division based on climatic fluctuations reflected in various facies of sediments on the territory of Poland and discuss their correlation with other European regions and global climatic changes.
    Print ISSN: 1733-8387
    Electronic ISSN: 1897-1695
    Topics: Archaeology , Geosciences
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  • 7
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    The reflection of human activity in the sediments of Iwankowskie Lake from Subatlantic Phase (Polish Outer Carpathians) (2014)
    De Gruyter
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    Publication Date: 2014-12-01
    Description: The paper presents the analysis of organic and mineral sediments filling the depression, which developed over the landslide located at the slope (767–773 m a.s.l.) of Lubań ridge decscending to the Ochotnica river valley in the Polish Flysch Carpathians. The landslide formed in an early stage of the Subatlantic Phase (2490 ± 35 BP). The top of peat is dated at 1360 ± 50 years BP and is covered by 72 cm of clayey silts with some sandy intercalations, which indicate slopewash after deforestation. The pollen of ruderal plants and Cerealia (undiff.) reflect agricultural activity in the surroundings. The fragments of charcoal indicate the age of the forest clearance to the first half of the 17th century. The late forest clearance at the elevated north exposed slopes followed 200–300 years later in relation to the foundation of the village at the valley floor.
    Print ISSN: 1733-8387
    Electronic ISSN: 1897-1695
    Topics: Archaeology , Geosciences
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