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    Wyświetlanie 1-6 z 6
    Tytuł:
    The Dobroe 9 site: a stratified Early Neolithic complex in the upper Don River
    Autorzy:
    Yurkina, Elizaveta
    Smol’yaninov, Roman
    Kulichkov, Alexey
    Kul’kova, Marianna
    Zheludkov, Andrey
    Yanish, Yevheniia
    Shatrovaya, Diana
    Powiązania:
    https://bibliotekanauki.pl/articles/1366027.pdf
    Data publikacji:
    2020-12-24
    Wydawca:
    Łódzkie Towarzystwo Naukowe
    Tematy:
    Early Neolithic
    Middle Don Culture
    pottery
    flint
    stratigraphy
    geochemical indication
    radiocarbon analysis
    Opis:
    The Middle Don Culture, distributed within the Middle and Upper Don River area, is thought to be one of the earliest Eastern European Neolithic cultures, and is dated to the 6th–5th millennium BC. A group of Neolithic sites was found on the right shore of the Voronezh River, and has been named the “Dobroe sites”. The Dobroe 9 settlement is one of few sites in this region at which an assemblage of Middle Don Culture has been recorded in a clear stratigraphic position. The numerous faunal remains, ceramic complex and stone inventory found at this site allows for a reconstruction of the earliest stages of the Neolithic. The elaborated ceramic typology suggests a gradual transformation of the local culture. The particularity of sedimentation process and deposition of artefacts allowed a precise correlation of stone inventory types with early-Neolithic ceramic types. Preliminary reconstructions of palaeoclimate and episodes of human activity for this time period were implemented based on geochemical methods.
    Źródło:
    Acta Geographica Lodziensia; 2020, 110; 33-48
    0065-1249
    Pojawia się w:
    Acta Geographica Lodziensia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Statistical analysis of radiocarbon dates as a tool for reconstruction of the environmental changes
    Autorzy:
    Michczyńska, D. J.
    Michczyński, A.
    Pazdur, A.
    Rotnicki, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1187375.pdf
    Data publikacji:
    2004
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    radiocarbon
    peat
    statistical analysis
    environmental change
    Opis:
    Statistical analysis of large sets of 14C dates may be a source of information on global or regional environmental changes. Since the nineteen seventies, an analysis of the frequency distribution on a time scale of 14C-dated samples has been carried out for several selected geographic regions. This paper presents basics of the applied method and examples of cumulative probability density functions constructed for 14C dates of peat from territory of Poland. It is emphasised that preferential sampling plays an important role in such a type of analysis. The problem of absolute age determination has been discussed, too.
    Źródło:
    Polish Geological Institute Special Papers; 2004, 11; 109-112
    1507-9791
    Pojawia się w:
    Polish Geological Institute Special Papers
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Absolute chronology of the Komarów culture in the Upper Dniester basin in light of research at the Bukivna cementery
    Chronologia absolutna kultury komarowskiej w dorzeczu górnego Dniestru w świetle badań na cmentarzysku w Bukivnej
    Autorzy:
    Makarowicz, Przemysław
    Cwaliński, Mateusz
    Romaniszyn, Jan
    Powiązania:
    https://bibliotekanauki.pl/articles/498048.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Rzeszowski. Instytut Archeologii Uniwersytetu Rzeszowskiego. Muzeum Okręgowe w Rzeszowie
    Tematy:
    Barrow
    seriation
    correspondence analysis
    sequence of monuments
    radiocarbon determinations
    Źródło:
    Analecta Archaeologica Ressoviensia; 2016, 11; 131-164
    2084-4409
    Pojawia się w:
    Analecta Archaeologica Ressoviensia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Origin and evolution of basins in the eastern part of Jasło-Sanok Depression (Polish Carpathians) in the Late Vistulian and Holocene
    Autorzy:
    Gerlach, Tadeusz
    Gębica, Piotr
    Szczepanek, Kazimierz
    Nalepka, Dorota
    Walanus, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/2025132.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    deflation basins
    radiocarbon dating
    pollen analysis
    Jasło-Sanok Depression
    Carpathians
    Opis:
    Results of a geomorphologic study as well as radiocarbon and pollen analyses of sediments in small basins of the Jasło-Sanok Depression (Western Carpathians) are summarised. Floors of these basins, carved in soft shale-sandstone Krosno Beds, are covered with channel fluvial deposits and oxbow-lake sediments with lake chalk and peat accumulated in the Late Vistulian and Holocene. Since the early Atlantic Phase (ca 8,400–7,900 BP) the apparent acceleration of overbank (flood) deposition intermitting the peat accumulation is observed. The plant succession includes the Late Glacial (pre-Allerød, Allerød and Younger Dryas) with coniferous park forests, through mixed deciduous forests of the Holocene with elm, hazel, oak and lime as well as spruce-elm forests with alder in wetlands, up to present-day hornbeam forests (Tilio-Carpinetum of various types) and extra-zonal Carpathian beech forests (Dentario-Glandulosae- Fagetum). Abies alba (fir) is frequent in both these association types. First evidences of synanthropic plants that prove presence of prehistoric man appeared in the Subboreal Phase. The oldest radiocarbon date 13,550±100 BP (Gd-7355) [16,710–16,085 b2k], from a bottom part of the Humniska section is probably overestimated. This is indicated by palynological data, which suggest attribution of this section to the older Allerød. Small thickness of gravel blanket from the Plenivistulian termination and the beginning of the Late Vistulian, as well as large areas devoid of weathering and solifluction covers indicate that during the Plenivistulian weathering processes and removal of silt-clay material predominated in the basins. In that time the deflation was among important processes, which is proved by deflation troughs, faceted cobbles and thick covers of the Carpathian type of loess. The Besko Basin has pre-Vistulian tectonic foundation, while landforms of its floor are of erosion-degradation origin and formed during the last Scandinavian glaciation. In the Holocene the basin floors were overbuilt with fluvial deposits up to 8 m thick.
    Źródło:
    Studia Quaternaria; 2019, 36; 171-194
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sedimentary evidence of extreme storm surge or tsunami events in the southern Baltic Sea (Rogowo area, NW Poland)
    Autorzy:
    Piotrowski, A.
    Szczuciński, W.
    Sydor, P.
    Kotrys, B.
    Rzodkiewicz, M.
    Krzymińska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060594.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    tsunami deposits
    storm surge deposits
    grain size analysis
    geochemistry
    radiocarbon dating
    Baltic Sea
    Opis:
    The Baltic Sea is not typically considered as an area affected by tsunamis. However, during the Late Pleistocene and Holocene several tsunami events have been interpreted from the sedimentary record, mainly in Sweden and Estonia. Furthermore, on the southern coast of the Baltic Sea, there are historical accounts of catastrophical marine floodings called “der Seebär” (“the Sea Bear”). Their descriptions reveal many features typical for tsunami, but their genesis remained unknown and sedimentary evidence for such events has not been found. Here we provide evidence of sandy event layers from the area of Rogowo, NW Poland – the area of historical catastrophic storms as well as “der Seebär” events. The study area is a low-lying coastal plain with an average elevation of –0.5 to +0.5 m a.s.l., protected from the open sea by beach and coastal dune systems up to 5 m high. Sedimentological, micropalaeontological and geochemical analyses along with AMS 14C dating were applied to sedimentary successions seen in 5 major trenches and 198 sediment cores up to 1.5 m long. Two sandy layers were identified in the peat deposits that developed on the plain during the last ~2000 years. They reveal a number of typical features of tsunami deposits (significant lateral extent and thickness, rip-up clasts, chemical and micropalaeontological evidence of marine origin), however, 14C dating along with the historical accounts revealed that the major layer, extending at least 1.2 km from the modern coasts, was probably deposited by arguably the largest storm surge during the last 2000 years, which took place in 1497 AD. These storm deposits were likely formed during inundation of the low-lying coastal plain after major breaching of coastal dunes resulting in tsunami – like flow pattern and thus similar sedimentological effects. A discontinuous sand layer of younger age (18th century) and sharing similar properties to the previous one may be related to “der Seebär” event or another storm surge. The study revealed that the southern Baltic Sea coast may be affected by much greater coastal flooding than known from more recent accounts and observations. Thus, the presented geological record should be taken as an example of a worst-case scenario in coastal zone risk assessment from natural hazards. These events left sedimentary deposits that resemble tsunami deposits. It is likely that, in similar settings where storm surges cause unidirectional inundation of a coastal plain, it may not be possible to establish whether the resulting deposits were laid down from storms or tsunamis.
    Źródło:
    Geological Quarterly; 2017, 61, 4; 973--986
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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
      Wyświetlanie 1-6 z 6

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