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    Wyświetlanie 1-5 z 5
    Tytuł:
    Późnoglacjalne i holoceńskie zmiany środowiska zapisane w osadach organogenicznych profilu Bysławek-2 (Wysoczyzna Świecka - północna Polska)
    Late glacial and Holocene changes of environment recorded in organogenic sediments in the Bysławek -2 profile (Świecie Plateau - N Poland)
    Autorzy:
    Wieczorek, D.
    Winter, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074839.pdf
    Data publikacji:
    2011
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    analiza pyłkowa
    Wysoczyzna Świecka
    północna Polska
    datowanie osadów metodą radiowęglową
    AMS
    pollen analysis
    radiocarbon dating (AMS)
    Świecie Plateau
    northern Poland
    Opis:
    Core drilling of a hole Bysławek-2 consisted of gyttja and peat, lying on the mineral deposits (fluvioglacial sand). Lake sediments and peat were investigated by pollen analysis and radiocarbon dating (AMS). Sedimentation of mineral deposits took place into the subglacial channel, during the Main Stage of the Vistula Glaciation. The beginning of sedimentation in lake is dating at 13 340 š 70 years 14C BP, but pollen data suggest the Alleröd character of vegetation. According to pollen analysis gyttja and peat covered the period from the Alleröd to the Subboreal. The Alleröd forest dominated by Pinus sylvestris became more open in the Younger Dryas. The Holocene history of vegetation is characterized by relatively low content of Carpinus and Fagus in forest. Human impact was also generally low throughout the Holocene.
    Źródło:
    Przegląd Geologiczny; 2011, 59, 12; 793-800
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Variable isostatic uplift patterns during the holocene in southeast Sweden, based on high-resolution ams radiocarbon dating of lake isolations - a preliminary interpretation
    Autorzy:
    Risberg, J.
    Alm, G.
    Goslar, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1204994.pdf
    Data publikacji:
    2008
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    isostatic uplift
    ams radiocarbon dating
    Holocene
    south-eastern Sweden
    Opis:
    To describe changes in shoreline configuration in northern Uppland, south-east Sweden, the isolations of 17 present and overgrown lakes have been interpreted from diatom analysis and AMS radiocarbon dates on terrestrial macrofossils. The sites studied are spread c. 60 km in east-west and c. 70 km in north-south direction. The oldest isobase direction, representing the "Neolithic Sea", extends in more or less north-south direction. The present day isobase system shows a clear east-west trend. The results indicate a complicated pattern of isostatic uplift during the late Holocene. We have defined five different shore displacement curves denoted A–E. It is obvious that the present day east-western isobase system is not valid for the investigated sites. Instead, the north-south isobases for the "Neolithic Sea" should to a relatively high degree explain the geographic distribution of sites. It is suggested that a re-direction of the isostatic uplift pattern has occurred sometime during the last c. 5000 years. This shift could have taken place as a slow deformation of the bedrock and/or as neotectonic movements along existing fault lines.
    Źródło:
    Polish Geological Institute Special Papers; 2008, 23; 77-80
    1507-9791
    Pojawia się w:
    Polish Geological Institute Special Papers
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Deglaciation chronology of the Pandivere and Palivere ice-marginal zones in Estonia
    Autorzy:
    Saarse, L.
    Heinsalu, A.
    Veski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2058988.pdf
    Data publikacji:
    2012
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    deglaciation
    Late Glacial
    proglacial lakes
    AMS 14C radiocarbon dating
    Estonia
    Opis:
    Accelerator mass spectrometry (AMS) 14
    Źródło:
    Geological Quarterly; 2012, 56, 2; 353-362
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Radiocarbon dating of plant remnants in Quaternary sediments at Starunia palaeontological site and vicinity (Carpathian region, Ukraine)
    Autorzy:
    Kuc, T.
    Różański, K.
    Stachowicz-Rybka, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/191550.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    radiocarbon dating
    AMS dating
    woolly rhinoceros
    Starunia
    Carpathian region
    Ukraine
    Opis:
    Radiocarbon dating applied on several occasions in the past to date animal bones and animal soft tissue originating from the area of the Starunia palaeontological site turned out to be very controversial. Although investigations of Pleistocene flora in the Starunia area go back to the beginning of the 20th century, no published 14C dates of such material are available to date. Sixteen boreholes drilled in the area of the Pleistocene mammals discoveries, in the framework of a multidisciplinary research project (2006-2009), have been selected for radiocarbon dating of plant macrofossils. Moreover, five samples of plant remnants extracted from two outcrops in the area were 14C-dated. The nature of the dated plant material, in some cases soaked with oil, posed specific methodological problems. Although applied chemical treatment of macrofossil samples led to complete removal of contaminating hydrocarbons in the case of small pieces, some ageing effects in terms of radiocarbon dating cannot be completely ruled out. Radiocarbon ages of macrofossil samples originating from the close neighbourhood of the location, where the "second" woolly rhinoceros was found at a depth of 12.5 m, suggest that the minimum age of sediments in which the Pleistocene mammals were found is in the range of ca. 35-40 ka BP. A broad consistency between palynological reconstruction of Younger Dryas/Preboreal boundary and the corresponding radiocarbon ages of macrofossils is observed for locations, where the natural sedimentary sequence for late Glacial and early Holocene was not disturbed by extensive mining activity in the area.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2009, 79, No 3; 289-296
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pierwsze radiowęglowe (14C) datowania kości ssaków ze żwirowni w Krosinku (Wielkopolska)
    First radiocarbon dating of mammal bones from the gravel-pit at Krosinko (Wielkopolska)
    Autorzy:
    Lorenc, M.
    Pawłowska, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074727.pdf
    Data publikacji:
    2010
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    materiały kostne
    radiowęglowe datowania
    żwirownia
    vistulian
    doliny lodowe-wtórne
    bone sample
    radiocarbon (AMS) dating
    gravel pit
    Warsaw-Berlin ice-marginal valley
    Vistulian (Weichselian)
    Opis:
    4 mammal bone samples were radiocarbon (AMS) dated. The bones come from gravel-pit in Krosinko located in Warsaw-Berlin ice-marginal valley, 10 km south-west of Poznań. The ages of the dated bones samples differs considerably. The oldest bone sample comes from the beginning and the youngest one from the end of the Middle Plenivistulian and the difference between them is about 20 000 years.
    Źródło:
    Przegląd Geologiczny; 2010, 58, 11; 1103-1106
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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