Factors influencing temporal changes in chemical composition of biogenic deposits in the middle Tążyna River Valley (Kuyavian Lakeland, central Poland)

dc.contributor.authorOkupny, Daniel
dc.contributor.authorRzepecki, Seweryn
dc.contributor.authorBorówka, Ryszard Krzysztof
dc.contributor.authorForysiak, Jacek
dc.contributor.authorTwardy, Juliusz
dc.contributor.authorFortuniak, Anna
dc.contributor.authorTomkowiak, Julita
dc.date.accessioned2016-08-30T07:10:37Z
dc.date.available2016-08-30T07:10:37Z
dc.date.issued2016-08
dc.description.abstractThe present paper discusses the influence of geochemical properties on biogenic deposits in the Wilkostowo mire near Toruń, central Poland. The analysed core has allowed the documentation of environmental changes between the older part of the Atlantic Period and the present day (probably interrupted at the turn of the Meso- and Neoholocene). In order to reconstruct the main stages in the sedimentation of biogenic deposits, we have used stratigraphic variability of selected litho-geochemical elements (organic matter, calcium carbonate, biogenic and terrigenous silica, macro- and micro-elements: Na, K, Mg, Ca, Fe, Mn, Cu, Zn, Pb, Cr and Ni). The main litho-geochemical component is CaCO 3 ; its content ranges from 4.1 per cent to 92 per cent. The variability of CaCO 3 content reflects mainly changes in hydrolog- ical and geomorphological conditions within the catchment area. The effects of prehistoric anthropogenic activities in the catchment of the River Tążyna, e.g., the use of saline water for economic purposes, are recorded in a change from calcareous gyttja into detritus-calcareous gyttja sedimentation and an increased content of lithophilous elements (Na, K, Mg and Ni) in the sediments. Principal component analysis (PCA) has enabled the distinction the most important factors that affected the chemical composition of sediments at the Wilkostowo site, i.e., mechanical and chemical den- udation processes in the catchment, changes in redox conditions, bioaccumulation of selected elements and human activity. Sediments of the Wilkostowo mire are located in the direct vicinity of an archaeological site, where traces of intensive settlement dating back to the Neolithic have been documented. The settlement phase is recorded both in li- thology and geochemical properties of biogenic deposits which fill the reservoir formed at the bottom of the Parchania Canal Valley.pl_PL
dc.identifier.citationGeologos, 2016, 22, 2,pp.121-136pl_PL
dc.identifier.doihttps://doi.org/10.1515/logos-2016-0013
dc.identifier.isbnISBN 978-83-232187-4-6
dc.identifier.issnISSN 1426-8981
dc.identifier.urihttp://hdl.handle.net/10593/14877
dc.language.isoengpl_PL
dc.publisherInstytut Geologii UAMpl_PL
dc.rightsinfo:eu-repo/semantics/openAccesspl_PL
dc.subjectlake sedimentspl_PL
dc.subjectpeatpl_PL
dc.subjectgeochemistrypl_PL
dc.subjecthuman activitypl_PL
dc.subjectcentral Europepl_PL
dc.titleFactors influencing temporal changes in chemical composition of biogenic deposits in the middle Tążyna River Valley (Kuyavian Lakeland, central Poland)pl_PL
dc.typeArtykułpl_PL

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Uniwersytet im. Adama Mickiewicza w Poznaniu
Biblioteka Uniwersytetu im. Adama Mickiewicza w Poznaniu
Ministerstwo Nauki i Szkolnictwa Wyższego