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    Wyświetlanie 1-8 z 8
    Tytuł:
    The relationship between the chemical composition and lithology of Late Glacial and Holocene biogenic deposits of the Żabieniec mire (Central Poland)
    Autorzy:
    Okupny, Daniel
    Borówka, Ryszard Krzysztof
    Forysiak, Jacek
    Twardy, Juliusz
    Kloss, Marek
    Żurek, Sławomir
    Powiązania:
    https://bibliotekanauki.pl/articles/2058726.pdf
    Data publikacji:
    2021
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    kettle hole
    limnogenic mire
    geochemistry
    macrofossils
    denudation
    Central Poland
    Opis:
    Geochemical and plant macrofossil analyses of the Żabieniec mire deposits and the palaeoenvironmental changes they record of the past several thousand years constitute an important source for palaeogeographical reconstruction of the Polish Lowland. We describe the phases of the basin’s development from the final part of the Plenivistulian (MIS2), through the Late Glacial and the entire Holocene, encompassing changes determined by both regional and global factors in the surrounding environment, and habitat transformations in the limnogenic mire. The kettle-hole infill of the Żabieniec mire is the only documented example in Central Poland of a succession of biogenic deposits exceeding 10 m in thickness in such a setting. Deposition initially took place in a lake environment, which led to a shallowing of the lake that persisted until the end of the Mesoholocene.
    Źródło:
    Geological Quarterly; 2021, 65, 1; 11
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lithology and geochemistry of the Late Glacial and Holocene sediments from Gostyń Lake (Western Pomerania, Myślibórz Lakeland)
    Autorzy:
    Korzeniowski, Andrzej
    Okupny, Daniel
    Michczyński, Adam
    Sławińska, Joanna
    Borówka, Ryszard K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1366047.pdf
    Data publikacji:
    2020-12-24
    Wydawca:
    Łódzkie Towarzystwo Naukowe
    Tematy:
    lakes
    biogenic deposits
    geochemistry
    human impact
    Holocene
    western Poland
    Opis:
    Sediment geochemistry and lithology were studied in Gostyń Lake in the eastern part of the Myślibórz Lakeland (part of the Western Pomeranian Lake District). The research was undertaken because relatively shallow lake basins without ground supply contribute to the intensification of water circulation through evaporation. Late Glacial and Holocene phases in the evolution of Gostyń Lake were reconstructed based on selected geochemical indicators (Fe/Mn, S/Fe, Na/K, Mg/Ca, Cu/Zn, Na+K+Mg/Ca, Fe/Ca) as well as on the presence of human activity (Stone Age, Bronze Age, Early Iron Age and Roman Period). Also, the geochemical and archaeological data were correlated. Generally, the lithogeochemical composition variability in the Gostyń Lake deposits was found to be controlled by changes in: 1) the climate, related to the biogenic accumulation environment, 2) land cover in the Late Glacial and Holocene, and 3) human activities. Principal Component Analysis (PCA) revealed four major variable groups responsible for the changes: hydroclimatic variations which determined the type of sedimentary conditions during the Holocene climate optimum; changes in the organic matter provenance (along with conditions favouring sulphide precipitation); and denudation processes in the Gostyń Lake catchment. The methods used allowed the distribution of ancient settlement to be traced. Interpretation of the geochemical indicators (Fe/Mn, Cu/Zn, S/Fe, Ca/Fe) should involve many more factors which, in the relevant literature, are treated as measures of changes in redox conditions
    Źródło:
    Acta Geographica Lodziensia; 2020, 110; 149-168
    0065-1249
    Pojawia się w:
    Acta Geographica Lodziensia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geochemical analyses of recent sediments from Lake Morzycko against selected physiographic parameters of the Słubia River catchment (Western Poland)
    Autorzy:
    Adamek, Anna
    Mareczka, Paulina
    Jucha, Witold
    Musielak, Stanisław
    Okupny, Daniel
    Powiązania:
    https://bibliotekanauki.pl/articles/2037025.pdf
    Data publikacji:
    2021-12-23
    Wydawca:
    Łódzkie Towarzystwo Naukowe
    Tematy:
    lake sediments
    geochemistry
    grain-size composition
    land-cover photointerpretation
    Myślibórz Lakeland
    Opis:
    This paper presents the results of a study on the content of lithogeochemical components (organic matter, Na, K, Mg, Ca, Mn, Fe, Cu and Zn) and grain-size composition of mineral matter in the bottom sediments of Morzycko Lake (Myślibórz Lakeland, NW Poland). This lake is large (342.7 ha) and deep (69 m). The catchment has a typical forested character (mainly in the middle part of the Słubia River valley) with agricultural area (mainly in the upland areas north of the lake). The diversity of concentrations of metals was analysed based on 44 samples from 22 representative sites, including surface sediments and sediments from 5 cm below the current lake bed. The results showed that the chemical composition and granulometry of bottom sediments depends on contemporary morphogenetic processes in the catchment of the Słubia River. Geochemical and grain-size indices varied due to changes in biological productivity, intensity of weathering of postglacial material making up the catchment, and potential for migration of metals to the lake with surface or underground runoff. An important aspect in assessing the degree of enrichment of the sediments in trace elements is the location of shallow parts of the lake near the tourist districts of Moryń.
    Źródło:
    Acta Geographica Lodziensia; 2021, 111; 71-87
    0065-1249
    Pojawia się w:
    Acta Geographica Lodziensia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geochemistry of a sedimentary section at the Wąwelnica archaeological site, Szczecin Hills (Western Pomerania)
    Autorzy:
    Okupny, Daniel
    Borówka, Ryszard K.
    Cedro, Bernard
    Sławińska, Joanna
    Tomkowiak, Julita
    Michczyński, Adam
    Kozłowska, Dorota
    Kowalski, Krzysztof
    Sedlik, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/1366052.pdf
    Data publikacji:
    2020-12-24
    Wydawca:
    Łódzkie Towarzystwo Naukowe
    Tematy:
    biogenic accumulation basins
    drainless areas
    geochemistry
    human impact
    Holocene
    Szczecin Hills
    Opis:
    The results of geochemical assays on biogenic sediments filling a fossil lacustrine basin at Wąwelnica, in the Szczecin Hills, within the left-bank part of the Oder River catchment are presented. The data reveal a natural Holocene sedimentation sequence similar to that found for other sites in central Europe. The geochemical record of palaeo-environmental changes, which may be a consequence of human activities in the proximity of the site, is distinctly bipartite. The part of the profile corresponding to the lacustrine sediment accumulation during the Greenlandian occasionally shows an increased mineral content and an elevated catchment erosion index. An incidental presence of Palaeolithic and Mesolithic communities is confirmed by archaeological evidence from a few sites in the Szczecin Hills. More distinct episodes of mineral matter supply and more pronounced changes in geochemical indicators can be inferred as occurring from the onset of the older part of the Atlantic until the Older Subboreal. Most of the flint artefacts discovered along with a collection of vessel fragments in the Mierzyn-Dołuje area are associated with the Neolithic occupation. However, changes in the deposits’ geochemistry do not reflect all the settlement stages associated with the consecutive human groups identified by archaeological evidence. Possible reasons include a low sediment accumulation rate having restricted peat mass accretion and prevented the storing of any higher amounts of water. This, along with the climate-change-caused lowering of the water table, could have periodically stopped the accumulation of autochthonous organic matter. In addition, intensified human activities coincided with periods of stable and low water level in the basin. On the other hand, breaks in human activity correspond with moist Holocene stages and local flooding events.
    Źródło:
    Acta Geographica Lodziensia; 2020, 110; 169-186
    0065-1249
    Pojawia się w:
    Acta Geographica Lodziensia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lacustrine, fluvial and slope deposits in the wetland shore area in Serteya, Western Russia
    Autorzy:
    Kittel, Piotr
    Mazurkevich, Andrey
    Alexandrovskiy, Alexander
    Dolbunova, Ekaterina
    Krupski, Mateusz
    Szmańda, Jacek
    Stachowicz-Rybka, Renata
    Cywa, Katarzyna
    Mroczkowska, Agnieszka
    Okupny, Daniel
    Powiązania:
    https://bibliotekanauki.pl/articles/1366038.pdf
    Data publikacji:
    2020-12-24
    Wydawca:
    Łódzkie Towarzystwo Naukowe
    Tematy:
    sedimentology
    micromorphology
    micro- and macrofossils
    geochemistry
    palaeolake shore zone
    archaeological layers
    Opis:
    The article presents the results of a study on sediment deposition processes in the palaeolake shore zone, at the multilayered Serteya II archaeological site in Western Russia. In recent years, geomorphological, palaeopedological and palaeoecological research was undertaken in strict cooperation with archaeological fieldwork. The Serteya II site occupies a substantial area of a kame terrace and biogenic plain within a palaeolake basin. From an archaeological point of view, the site is represented by few Mesolithic artefacts, but mostly by remnants of hunter–gatherer–fisher communities attributed in the Russian scientific tradition to the Neolithic period and dated from 6300 BC to 2000 BC. Later, the area was used by people in the Bronze Age, Early Iron Age and Early Middle Ages. The integration of archaeological and multidisciplinary palaeoenvironmental research allowed the natural and human induced deposition of mineral-organic and minerogenic sediments to be reconstructed, as well as the development of structures in the lake shore zone. The changes from lacustrine to fluvial system were documented and the human impact is recorded mostly in the acceleration of slope processes.
    Źródło:
    Acta Geographica Lodziensia; 2020, 110; 103-124
    0065-1249
    Pojawia się w:
    Acta Geographica Lodziensia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Skład chemiczny osadów organicznych ze stanowiska Koźmin Las
    Chemical composition of organic sediments from the Koźmin Las site
    Autorzy:
    Okupny, Daniel
    Borówka, Ryszard
    Fortuniak, Anna
    Tomkowiak, Julita
    Powiązania:
    https://bibliotekanauki.pl/articles/1366119.pdf
    Data publikacji:
    2014
    Wydawca:
    Łódzkie Towarzystwo Naukowe
    Tematy:
    osady organiczne
    dolina rzeczna
    geochemia
    Polska Środkowa
    organic sediments
    river valley
    geochemistry
    central Poland
    Opis:
    W oparciu o wyniki składu chemicznego osadów organicznych w stanowisku Koźmin Las, przedstawiono rekonstrukcję warunków środowiskowych doliny Warty pod koniec allerödu i w młodszym dryasie. Do rekonstrukcji wykorzystano dane dotyczące zawartości materii organicznej, materii mineralnej, węglanu wapnia, odczynu oraz koncentracji makro- (Na, K, Mg, Ca, Fe, Mn) i mikropierwiastków (Cu, Zn i Pb). Do czynników kształtujących skład chemiczny późnovistuliańskich osadów organicznych w dolinie Warty zaliczono sorpcję metali przez materię organiczną i uwodnione tlenki żelaza, zmien-ność akumulacji minerałów ilastych w środowisku sedymentacyjnym, sposób zasilania ekosystemu oraz właściwości aku-mulacyjne roślin w stosunku do określonych pierwiastków.
    The chemical composition of organic deposits from the site Koźmin Las are the basis of reconstruction of envi-ronment conditions of the Warta River valley at the end of the Alleröd and in the Younger Dryas. Environmental archives presented in this study, comprise organic matter content, mineral matter content, calcium carbonate content, reaction and macro- (Na, K, Mg, Ca, Fe, Mn) and microelements (Cu, Zn and Pb). The sorption of metals by organic matter and hydrated iron oxides, clay minerals accumulation variability in depositional environment, water relations of the ecosystem and bioac-cumulation of some elements are the factors determining the chemical composition of organic sediments in the Warta river valley.
    Źródło:
    Acta Geographica Lodziensia; 2014, 102; 71-86
    0065-1249
    Pojawia się w:
    Acta Geographica Lodziensia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cechy denudacji w regionie łódzkim w późnym vistulianie w świetle chemicznych badań w osadach torfowiskowych
    Denudation features of the Late Vistulian (Weichselian late glacial) preserved in the geochemical analysis of the biogenic deposits of the Łódź Region
    Autorzy:
    Okupny, Daniel
    Fortuniak, Anna
    Tomkowiak, Julita
    Powiązania:
    https://bibliotekanauki.pl/articles/578457.pdf
    Data publikacji:
    2013
    Wydawca:
    Łódzkie Towarzystwo Naukowe
    Tematy:
    torfowisko
    osady biogeniczne
    geochemia
    denudacja
    Polska Środkowa
    peatland
    biogenic deposits
    geochemistry
    denudation
    Central Poland
    Opis:
    Przedstawiono charakterystykę geochemiczną wybranych torfowisk regionu łódzkiego (Ługi, Podwódka i Rąbień). Celem pracy jest określenie typów i natężenia denudacji w zlewni badanych zbiorników w późnym vistulianie. Miąższość udokumentowanych osadów biogenicznych wynosiła: 2,66 m (profil R-3), 3,0 m (profil Ł-1) oraz 4,75 m (profil P-1). Badania geochemiczne obejmowały oznaczenie podstawowych składników tych osadów, tj. materię organiczną, węglan wapnia, krzemionkę terygeniczną i biogeniczną. Metodą spektrometrii absorpcji atomowej oznaczono pierwiastki pomocne w rekonstrukcji paleograficznej: Na, K, Ca, Mg i Zn. W analizie przemian typów denudacji zlewni, jakie panowały podczas depozycji osadów, wykorzystano wskaźniki geochemiczne odzwierciedlające najważniejsze zmiany w proporcjach oznaczonych elementów
    The paper presents the geochemical description of selected peatlands of the Łódź region: Ługi, Podwódka and Rąbień. The aim of this study is evaluation of the type and intensity of the Late Wechselian processes in the peatland catch-ment. The thickness of the document biogenic sediments in the profiles analyzed was: 2,66 m (core R-3), 3,0 m (core Ł-1) and 4,75 m (core P-1). The objective of the geochemical analyses of the above peatlands was identification of basic compo-nents of biogenic sediments, i.e. organic matter, calcium carbonate, terigenic and biogenic silica. In the resulting solution, elements helpful in palaeogeographical reconstruction were identified by the method of atomic absorption spectroscopy: Na, K, Ca, Mg and Zn. The analysis of types of denudation in the catchment following geochemical indices reflecting the most important changes in contribution of marked elements.
    Źródło:
    Acta Geographica Lodziensia; 2013, 101; 89-99
    0065-1249
    Pojawia się w:
    Acta Geographica Lodziensia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Roman Period well fills resulting from using and abandonment in environment of a river valley (Kwiatków site, Central Poland)
    Autorzy:
    Piotrowska, Magdalena
    Okupny, Daniel
    Twardy, Juliusz
    Forysiak, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/2025130.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    archaeology
    Iron Age
    filling of well
    geochemistry
    lithology
    Warta river valley
    Polish Lowland
    Nauki o Ziemi
    Opis:
    The research was conducted at the Kwiatków site,1 in the Koło Basin (Central Poland). It included a fragment of a low terrace and the valley floor of the Warta river valley. The archaeological investigation documented over 100 wells that archaeological material indicates are associated with the Przeworsk culture. Geomorphological, lithological and geochemical studies were carried out at the archaeological sites and their surroundings. Selected for the presentation were two wells whose fillings were carefully tested and subjected to geochemical and lithological analyses. The wells showed a slightly different content of artifacts, as well as differences in their grain-size distributions, the structure of their filling deposits, and their geochemistry. This allows us to conclude that the two wells were used differently, but also probably about a different course for how each well was filled after the end of its operation.
    Źródło:
    Studia Quaternaria; 2019, 36; 55-69
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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