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    Wyświetlanie 1-4 z 4
    Tytuł:
    Vegetation and climate of the Butënai Interglacial (Holsteinian) in Lithuania
    Autorzy:
    Kondratiené, O.
    Šeiriené, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059176.pdf
    Data publikacji:
    2003
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Holsteinian Interglacial
    pollen
    vegetation
    climate
    palaeogeography
    Opis:
    Palaeobotanical (mainly palynological) data from 38 sections of Lithuania and adjacent areas were used in order to resolve some palaeogeographical problems. The Butënai Interglacial (Holsteinian) had one distinct climatic optimum, represented by the B2–B4 pollen zones. This was a period of warm and wet climate with notable mild winters. The average annual temperature might have been 2–4ºC warmer and the annual precipitation some 300 mm greater than at present in Lithuania. There was probably no permanent snow cover during winters. Isopollen maps for the main forest constituents allow deduction of the directions of migration of individual tree taxa.
    Źródło:
    Geological Quarterly; 2003, 47, 2; 139-148
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vegetation and climate changes during merkine interglacial (Eemian) in Lithuania
    Autorzy:
    Seiriene, V.
    Kondratiene, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/1186029.pdf
    Data publikacji:
    2005
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    pollen
    vegetation
    temperature
    climate
    Eemian Interglacial
    Opis:
    The main features of vegetation and climate changes during Merkine Interglacial (Eemian) are discussed in the paper. Pollen data of about 34 sections were used in this study. Calculated climatic parameters indicate warmer and damper climate during the climatic optimum than at present in Lithuania. The mean year temperature fluctuated from +11 to +13 stopni C, mean January temperature from +1 to -1stopni C and mean July temperature - from +22 to +23 stopni C. Number of precipitation’s ranged from 1080 to 1100 mm. The natural vegetational changes took place during the climatic optimum, climatic changes played an insignificant role.
    Źródło:
    Polish Geological Institute Special Papers; 2005, 16; 103--108
    1507-9791
    Pojawia się w:
    Polish Geological Institute Special Papers
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The earliest Pleistocene interglacials in Lithuania in the context of global environmental changes
    Autorzy:
    Baltrūnas, V.
    Zinkutė, R.
    Šeirienė, V.
    Katinas, V.
    Karmaza, B.
    Kisielienė, D.
    Stakėnienė, R.
    Pukelytė, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059977.pdf
    Data publikacji:
    2014
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    environmental changes
    geochemistry
    magnetic susceptibility
    palaeobotany
    Early-Middle Pleistocene
    Lithuania
    Opis:
    Investigations have been carried out in order to reconstruct the palaeoenvironmental changes during the earliest Pleistocene interglacials and to establish their relation to global environmental changes. Three sections in east Lithuania exposing the earliest Pleistocene lacustrine deposits lying between the Kalviai (Glacial B, Nidanian?) and Dzūkija (Sanian 1) and between Dzūkija (Sanian 1) and Dainava (Sanian 2) glacial deposits were selected for study. Until now the Šlavė-2 and Vindžiūnai-136 successions were considered to have formed during the Vindžiūnai (Augustovian?, Malopolanian) Interglacial and the Kudrė-915 succession during the Turgeliai (Cromerian IV, Ferdynandovian) Interglacial. Geochemical, palaeomagnetic, magnetic susceptibility, anisotropy of magnetic susceptibility and palaeobotanical proxies were applied to establish the cyclicity and dynamics of palaeoenvironmental change. The data obtained enable the subdivision of the section into units related to changes in the sedimentary environment. The Matuyama/Brunhes boundary and Jaramillo subchron of the Matuyama chron have been recognized in the Šlavė section. The results enable correction of the stratigraphic position of the sections studied. The sedimentation in the Šlavė section took place during the Early Pleistocene, while that at the Vindžiūnai-136 and Kudrė-915 took place during two different Middle Pleistocene interglacials.
    Źródło:
    Geological Quarterly; 2014, 58, 1; 145--162
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sedimentary environment changes during the Early-Middle Pleistocene transition as recorded by the Daumantai sections in Lithuania
    Autorzy:
    Baltrūnas, V.
    Zinkutė, R.
    Katinas, V.
    Karmaza, B.
    Šeirienė, V.
    Kisielienė, D.
    Taraškevičius, R.
    Lagunavičienė, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060022.pdf
    Data publikacji:
    2013
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Early-Middle Pleistocene
    environmental changes
    geochemistry
    magnetic susceptibility
    plant macroremains
    Lithuania
    Opis:
    Two sections (Daumantai-1 and Daumantai-3) in East Lithuania expose Early-Middle Pleistocene lacustrine-alluvial, deposits which lie on a thin Neogene layer and on older Devonian rocks. They are overlain by glacigenic deposits. Geochemical, palaeomagnetic, magnetic susceptibility, plant macrofossil, and diatom investigations were performed to determine the changes in the sedimentary environment. Cluster analysis of the geochemical variables (10 major elements, 16 trace elements, total organic and inorganic carbon) revealed the element groups and factors. The lowermost units are characterized by a major influence of local material and significant fluctuations in heavy mineral content. These fluctuations might reflect short-term climate changes. The transitional units have more expressed trends, especially as regards the trace elements and Zr/Ti. The uppermost units are characterized by a slight influence of local material and small fluctuations in trace elements. The data analysed enable the subdivision of the section into units related to changes in sedimentary environment. The boundary of the Bruhnes/Matuyama reversal in the Daumantai-1 and Daumantai-3 sections was detected by palaeomagnetic studies and enables the stratigraphical correlation of these deposits.
    Źródło:
    Geological Quarterly; 2013, 57, 1; 45--60
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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