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    Wyświetlanie 1-3 z 3
    Tytuł:
    Sedimentary environment of the early pleistocene gravels of the edfu formation from the saqqara archaeological site (Egypt) – preliminary results
    Autorzy:
    Czarniecka, Urszula
    Wysocka, Anna
    Welc, Fabian
    Powiązania:
    https://bibliotekanauki.pl/articles/2025313.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    gravels
    Edfu Pluvial
    Pleistocene
    Saqqara
    Egipt
    Egypt
    Nauki o Ziemi
    Opis:
    A gravel horizon is preserved in several locations within the world-wide known archaeological site in Saqqara (northern Egypt). It is characterized by a variable thickness, composed of coarse, quartz, quartzitic and flint pebbles, and considered to correspond to gravels of the Edfu Formation, deposited in the Early Pleistocene by the early phase of the Nile development (Protonile Phase). This relatively short (ca. 200 ka) and at the same time very dynamic period of Protonile activity during the Edfu Pluvial is one of the most poorly recognized hydrological-climatic episodes of the Quaternary in north-eastern Africa. This paper is focused on the preliminary sedimentological-petrographic characteristics of these deposits and an attempt to indicate their source areas as well as mechanisms of transportation and deposition in the context of Pleistocene pluvial episodes.
    Źródło:
    Studia Quaternaria; 2016, 33; 69-78
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geoarchaeological evidence of late and post-Antiquity (5th-9th c. AD) climate changes recorded at the Roman site in Plemići Bay (Zadar region, Croatia)
    Autorzy:
    Welc, Fabian
    Powiązania:
    https://bibliotekanauki.pl/articles/2025093.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    geoarchaeology
    climate change
    Roman period
    Croatia
    eastern Adriatic
    Nauki o Ziemi
    Opis:
    Remains of a vast Roman pottery production complex were found on the shore of the Plemići Bay (Općina Ražanac, Zadar county) in 2012, and confirmed by geophysical survey. Ground-penetrating radar measurements revealed outline of a rectangular building that finds analogies with Roman storehouses (horreum). The area occupied by remains of the Roman pottery workshop was covered by immense soil-debris flows. Three geological exposures located to the north of the remains of the Roman building were documented using lithological and malacological analysis, and magnetic susceptibility measurements. The profiles revealed at least three generations of slope sediments, formed in result ofintensive soil or debris flows in a dry climate, most probably in 5th c. AD. In the next, wet phase sediments were transported downslope and deposited on the Roman structures after 5th c. AD. Environmental conditions at Pelmići weresupply with paleoclimate evidence from the Adriatic region. At ca. 1.5 cal. BP lake levels in the eastern Adriatic area were drastically reduced, probably because of strong decrease in humidity, correlated with the so-called North Atlantic Bond event 3. The drought was followed by a humid episode, also attested at the Plemići archaeological site.
    Źródło:
    Studia Quaternaria; 2019, 36; 3-17
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preliminary report on engineering properties and environmental resistance of ancient mud bricks from tell el-retaba archaeological site in the nile delta
    Autorzy:
    Welc, Fabian
    Trzciński, Jerzy
    Zaremba, Małgorzata
    Rzepka, Sławomir
    Szczepański, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/2025359.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ancient Egypt
    mud bricks
    physical parameters
    compressive strength
    Nauki o Ziemi
    Opis:
    The archaeological site Tell el-Retaba in north-eastern Egypt, about 35 km to the west of Ismailia city, is located in the middle of Wadi Tumilat, a shallow valley running from the Nile Delta to the Bitter Lakes, along which flows the Suez Canal. In ancient times the valley was a route between Egypt and Syro-Palestine, strongly fortified in the New Kingdom times (16th–11th century BC). Mud bricks were analyzed from two parts of the Wall 1 (core of grey-brown bricks and inner extension of green bricks) in a fortress which existed during the Ramesses II times. Grain-size composition of the studied bricks was almost identical in both parts of the wall, suggesting the same source material for a production of brick. However, significant differences were observed in physical and mechanical properties (uni-axial compressive strength) in both types of bricks. Bricks from the core had lower bulk density, higher porosity and soak faster, whereas their resistance parameters were much lower than those of the bricks from the inner extension. The reason for such large differences in brick properties was a technology of their production, particularly proportion of components, water volume added during brick formation or density degree. Brick preparation and in consequence, physical-mechanical properties had direct influence on preservation of defensive structures during environmental changes related to changes of groundwater and surface water levels or of precipitation. Ancient Egyptians responsible for construction works in mud brick structures of the fortress must have had good knowledge and experience. This could be observed particularly for the heaviest and most important construction element that is the defensive wall, founded on well-densified deposits. It was also testified by higher resistance of green bricks from the inner extensions, which probably originated slightly later and were intended to reinforce a weaker core built of grey-brown bricks.
    Źródło:
    Studia Quaternaria; 2016, 33; 47-56
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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