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EN
This paper presents the results of a P olish-American research project lasting ten years comparing the widely separated hunting gathering societies that experienced similar changing environments in the Old and New World during the final Pleistocene and the early Holocene times. The study intended to compare the technological and economic histories of this societies living in the same time on the North European plain and the North Central United States. Over the period of time in question, they experienced the same changes of climate and environment. The results of the project permit us to say that the hunter gatherers adaptation process was often only slightly, and over time hardly at all dependent on environmental changes.
EN
This study presents the results of Optically Stimulated Luminescence (OSL) dating of colluvial sediment profiles from Biedrzykowice and Świerklany in the archaeologically well documented loess area of southern Poland, The method, the criteria for site selection and the limitations of the interpretation of the dates obtained are discussed. It is shown that Holocene colluvial sediments containing grains of quartz can be approximately dated using OSL. Despite its many limitations, it remains the only method suitable for direct dating of colluvial sediments. The obtained OSL dates are consistent with the archaeological evidence. The Biedrzykowice profile, located 6 km from the Neolithic settlement at Bronocice, contains two layers of Holocene colluvial sediments.The older layer, OSL dated to 6–5 ka BP, is separated from the younger, medieval layer dated to 1,0–0,5 ka BP by a fossil soil. In Świerklany, where there are no known prehistoric settlements, the accumulation of colluvial sediments only started in the medieval period. The OSL dating confirms earlier assumptions that in natural Holocene ecosystems in loess areas of the moderate climate forest zones, mineral material was not transported by slope wash, or only to a minimal extent. This work is the first direct isotopic dating of colluvial sediments in Poland.
EN
A geological survey of ten boreholes was carried out at the desert edge near Abusir to investigate the location and age of former lakes. These environments are suggested to have played an important role in the symbolic landscape of ancient Egypt by connecting the realms of the living and the dead. Based on our research, it can be excluded that an Old Kingdom lake was present at the investigated zone near Abusir, as the local subsoil was dominated by colluvial, aeolian and prehistorical fluvial deposits typical for the wadi and desert edge setting. Yet, all boreholes featured a distinct layer of degraded mud brick that was interpreted as a large platform or multiple features of Old Kingdom age. Potentially, these features were tied to boat-landing places, which could imply that a lake existed at the wadi-floodplain interface, not far from the investigated zone.
PL
Artykuł przedstawia związki przestrzenne wydm i obszarów mokradłowych w centralnej Polsce oraz zapis aktywności eolicznej w osadach biogenicznych. Interakcję wydm i sąsiadujących z nimi torfowisk rozpatrzono dla holocenu, nawiązując do chronologii archeologicznej. Przedstawione stanowiska z środkowej Polski dobrze ilustrują zapis wzbudzanych antropogenicznie zmian, jak też reakcję na te zmiany w geosystemach mokradłowych. Osady eoliczne składane były w postaci miąższych warstw w osadach biogenicznych w strefie styku wydm i mokradeł lub cieńszych wkładek i domieszek – w innych częściach badanych torfowisk. Dla młodszej części holocenu okresy zintensyfikowanych procesów eolicznych odniesiono do etapów tzw. antropogenicznej fazy wydmotwórczej.
EN
The article is focused on considerations on spatial relationships between dunes and wetlands in Central Poland and also on aeolian record in organic deposits. The interactions between dunes and neighboring peatlands have been analysed for the Holocene, according to the archaeological chronology. The presented sites illustrate well the record of human inducted processes as well as the reaction of wetland ecosystems. Aeolian deposits were deposited as thick layers within biogenic sediments at the contact zone of dunes and wetlands and as thinner interlaminations or admixtures in other parts of the studied peatlands. For the Late Holocene, periods of intensified interaction between aeolian processes and peatland have been related to stages of the so-called human-inducted dune forming phase.
XX
The study describes the gully system in the Rogów area (Lublin Upland). Based on field researchand available literature, four stages of gully erosion and three stages of alluvial sediment deposition were identified. The first erosion stage occurred towards the end of the last glacial period and was determined by natural factors. The other three erosion stages occurred in the Holocene and were impacted by man’s agricultural activity.
EN
The article analyzed the impact of old (prehistoric, medieval) and modern settlement on the nature of the Holocene alluvial sediments at the bottom of the Bystra valley. It was shown that the transition from peat to mineral deposits was the result of Neolithic farming. Nomadic culture of the late Neolithic and early Bronze Age have helped to stop the denudation slope sand increasing erosion in the bottom of the river valley. Restarting the denudation in the basin and the beginning of accumulation on the Bystra floodplain occurred only in the tenth century. Bystra river basin deforestation in modern times caused catastrophic linear erosion, denudation slopes and speed up the submission of anthropogenic alluvial soils.
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