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    Wyświetlanie 1-4 z 4
    Tytuł:
    Marble from Neolithic quarries at the Bílý Kámen Hill near Sázava (Central Bohemia, Czech Republic) and its petrographic-geochemical characterization
    Autorzy:
    Přichystal, Antonín
    Burgert, Pavel
    Gadas, Petr
    Powiązania:
    https://bibliotekanauki.pl/articles/2058626.pdf
    Data publikacji:
    2019
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    prehistoric mining
    marble
    Neolithic
    Bílý Kámen
    Bohemia
    petroarchaeology
    Opis:
    The longest known prehistoric quarries for non-siliceous (non-flint) rocks in continental Europe were discovered on the Bílý Kámen Hill in central Bohemia (Czech Republic) already in the period between the World Wars. Due to post-war events, this has been all but forgotten, and awareness of this important locality still exists only in the local research community. Its research potential has not yet been exhausted. The article presents the first exact mineralogical and geochemical characteristics of the raw material extracted in these prehistoric quarries. The raw material is fundamentally different from some of the marble artefacts from nearby workshops. The aim of this research is to create a solid foundation for the future detailed study of prehistoric artefacts made from marble and to review the deep-rooted idea of their distribution within the oldest agricultural communities in Central Europe.
    Źródło:
    Geological Quarterly; 2019, 63, 4; 811--821
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Jurassic red nodular limestone from NE Slovakia used as the Ľubovňa “marble” during the Renaissance in Slovakia and Poland
    Autorzy:
    Pivko, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060362.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Ľubovňa “marble”
    nodular limestone
    Stará Ľubovňa
    tombstone
    Slovakia
    Polska
    Opis:
    The Ľubovňa “marble” is red nodular limestone of Oxfordian to Tithonian age, which used to be extracted in several quarries near the town of Stará Ľubovňa in NE Slovakia. It replaced the Hungarian Gerecse “marble” which was extensively used in the Kingdom of Hungary and surrounding countries from the end of the 12th to the first third of the 16th century when its use was interrupted by the Turkish occupation of the area. The Ľubovňa “marble” was used as a substitution especially for Renaissance tombstones in today’s Slovakia and Poland and it was found also in Hungary. It reached the top of its popularity between the mid-16th and mid-17th century. To a smaller extent it was still used in the surrounding territories during the other styles in the 18th and 19th centuries. The “marble” production was probably affected by the political situation and wars. It is possible to distinguish the Ľubovňa “marble” from the Gerecse “marble” and the Adnet “marble” from Austria macroscopically on the basis of its distinct cleavage, and microscopically on the basis of microfacies with Saccocoma, Globuligerina and calcareous dinoflagellates. According to the stable isotopes of 18O and 13C, it is approximately similar to the Adnet “marble”.
    Źródło:
    Geological Quarterly; 2017, 61, 1; 53--61
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Indications of HP events in the volcanosedimentary succession of the Orlica–Śnieżnik Dome, NE Bohemian Massif: data from a marble-amphibolite interface
    Autorzy:
    Twyrdy, M.
    Żelaźniewicz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060385.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    high-pressure episode
    P-T path
    marble-amphibolite association
    Sudetes
    Opis:
    A volcanosedimentary succession of the Młynowiec-Stronie Group (MSG) in the Orlica–Śnieżnik Dome (OSD), the Sudetes, NE Bohemian Massif underwent multiple folding and shearing during the Variscan Orogeny. In the sheared domains, there are less deformed pods in which rocks preserve better records of metamorphic events prior to the regional temperature peak. In one such pod, near Gniewoszów on the western limb of the dome, marbles enclosed by massive amphibolites occur. In these rocks, zoned plagioclase with actinolite and epidote inclusions and zoned amphibole grains allowed recognition of three mineral assemblages and three P-T stages at: (1) 310°C/3–4 kbar, (2) 480–500°C/10.5 kbar, (3) 500–530°C/6–6.5 kbar, based on isopleth intersections and checked against conventional thermobarometry. These define a steep clockwise P-T path and a geothermal gradient of 17°C/km before peak conditions were attained, which suggests subduction of the metavolcano-sedimentary rocks (Stronie Formation of the MSG) on the western limb of the OSD, with a transient yet discrete higher pressure episode. Mineral relicts capable of demonstrating a higher pressure event are scarce in the supracrustal rocks of the dome, mainly because they became more thoroughly equilibrated and obliterated during the temperature peak at mid-amphibolite facies conditions and the subsequent ubiquitous greenschist facies overprint.
    Źródło:
    Geological Quarterly; 2017, 61, 2; 435--449
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ruin marble : a record of fracture-controlled fluid flow and precipitation
    Autorzy:
    Marko, F.
    Pivko, D.
    Hurai, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2058871.pdf
    Data publikacji:
    2003
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Western Carpathians
    fluids
    healed joints
    Liesegang rings
    ruin marble
    banded structures
    Opis:
    The ruin marble structure of the Cretaceous/Paleogene fine-grained marly limestone from the Outer Flysch Belt of the Western Carpathians has a non-tectonic origin, according to structural and sedimentological evidence. Distinctive offsets of coloured red-brownish ferric oxyhydroxide bands are not due to displacements along rock-cutting fractures, as they superficially appear to be. Evidences for shear movement along these pseudo-faults were not observed. Band offsets result from different velocities of pervasively diffusing fluids, precipitating ferric oxyhydroxides in corridors bounded by sets of mineralised systematic joints. During rock weathering, calcite-filled joints operated as barriers for lateral fluid diffusion, but enabled longitudinal diffusion along healed joints. Simple laboratory experiments have been performed to simulate the formation of natural ruin marble structure.
    Źródło:
    Geological Quarterly; 2003, 47, 3; 241-252
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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