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'Bačo P, Kaminská Ľ, Lexa J, Pécskay Z, Bačová Z, Konečný V, 2017: OCCURRENCES OF NEOGENE VOLCANIC GLASS
IN THE EASTERN SLOVAKIA – RAW MATERIAL
SOURCE FOR THE STONE INDUSTRY. Anthropologie (Brno) 55, 1-2: 207-230'. |
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| Abstract | | In Eastern Slovakia obsidians were used most extensively during the Late Palaeolithic and Neolithic.
Natural occurrences of obsidian are linked with products of rhyolite/rhyodacite volcanism, where they associate with
perlite. Viničky, Malá Bara and Brehov are the known natural occurrences. Considering the present state of knowledge,
the Brehov locality is a primary source of secondary obsidian accumulations in Quaternary deluvial/fluvial deposits,
partially covered by eolian sands, in the area of Brehov and Cejkov. Some of the macroscopic attributes, especially
surface sculpture, of the obsidian cores from archeological sites resemble more those from the secondary accumulations.
Conventional K/Ar dating of obsidians from natural occurrences and archeological sites implies multiple ages of
natural sources. However, dating of obsidians at archeological sites points rather to a single source, or yet unknown
source in addition to the secondary accumulations. Obsidians from at least two phases of rhyolite volcanic activity
have been utilized for production of obsidian industry. Obsidians from the secondary accumulations in the area of
Brehov and Cejkov apparently dominate at archeological sites and probably are equivalent to the subgroup C1a of the
Carpathian obsidians. | | | | Keywords | | Eastern Slovakia ‒ Miocene rhyolites ‒ Sources of obsidian ‒ Isotope dating – Utilization of obsidian | | |
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