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Browsing by Subject "sorption abilities"

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  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Naturalne geologiczne bariery izolacyjne na obszarach glacjalnych na przykładzie fragmentu Wysoczyzny Nidzickiej w okolicach Grzebska
    (Wydawnictwa AGH, 2008) Falkowska, Ewa
    The investigations were carried out in the eastern part of the Nidzica Upland near Grzebsk. The main aim of this research was to prove the connection between the occur of natural isolation barriers and the morphogenesis of this postglacial area. A geomorphologic model of the area was constructed. Geomorphological units were divided into five classes with regard to their abilities to retain pollution. The classification is based on the lithological characteristics of deposits, permeability coefficient, cation exchange capacity (CEC) and presence of continuous layers. Class I includes melt-out depressions, ice-dammed basins within the plateau, and side valleys which are built of peats, warps and gytia. They are characterized by very high sorption abilities, low permeability coefficient, and occurr as a continuous layer and at low groundwater level. Class II includes a morainic plateau built of glacial till, class III - an ablation cover, class IV - kames, valley kames, frontal moraines and dead-ice maraines, class V includes gemorphological units without natural isolation barriers in form of kame terrace and fluvioglacial plateau. The usefulness of morphogenesis analyses to valorize the studied part of the Nidzica Upland as a natural isolation barrier has been shown.