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, 2021 Obsidian is silicic volcanic glass that has undergone minimal crystallization, and has been documented in volcanic products spanning rhyolitic to phonolitic compositions. Although most abundant within lava flows, obsidian is also found in volcanic bombs and shallow intrusion margins.
Tuffen, Hugh +4 more
core +7 more sources
Archaeological Research in Asia, 2019 Here we report the results of a pXRF analysis of obsidian stone artefacts from Here Sorot Entapa rockshelter (HSE) on Kisar Island in the Wallacean Archipelago.
Sue O'Connor +2 more
exaly +2 more sources
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Fission track dating of obsidians
Nuclear Tracks, 1981Abstract Fission-track dating is applied to 16 obsidian artifacts from an archaeological excavation at Cayonu Tepesi in southeastern Anatolia. Since obsidian samples are rich in bubbles and inclusions, only the six most compact samples were found to be usable for fission-track measurements.
Yegingil Z., Göksu Y.
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Nature, 1978
The hydration of obsidian is studied by measuring hydrogen concentration profiles of natural samples hydrated at 90°C, using the 15N resonance nuclear reaction method. The results of this study are well reproduced by the interdiffusion model of Doremus. The importance of the non-amorphous phase of obsidian is discussed.
T. Laursen, W. A. Lanford
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The hydration of obsidian is studied by measuring hydrogen concentration profiles of natural samples hydrated at 90°C, using the 15N resonance nuclear reaction method. The results of this study are well reproduced by the interdiffusion model of Doremus. The importance of the non-amorphous phase of obsidian is discussed.
T. Laursen, W. A. Lanford
openaire +1 more source
The Annual of the British School at Athens, 1965
Obsidian to the Greeks was no more than a semi-precious stone, black and shiny, suitable for mirrors or exotic ornaments. But to their predecessors in the Aegean through five millenia it was an important raw material for the manufacture of tools and weapons.
Colin Renfrew, J. R. Cann, J. E. Dixon
openaire +1 more source
Obsidian to the Greeks was no more than a semi-precious stone, black and shiny, suitable for mirrors or exotic ornaments. But to their predecessors in the Aegean through five millenia it was an important raw material for the manufacture of tools and weapons.
Colin Renfrew, J. R. Cann, J. E. Dixon
openaire +1 more source
2005
In Europe obsidian is a very rare material, in comparison with other sectors of Earth, such as, for example, the adjacent Near East. In Western Europe obsidian workable by prehistoric men was recognised only in four volcanic complexes, located in the IIalian islands of Sardinia, Palmarola, Lipari and Pantelleria.
BIGAZZI G, ODDONE M, RADI, GIOVANNA
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In Europe obsidian is a very rare material, in comparison with other sectors of Earth, such as, for example, the adjacent Near East. In Western Europe obsidian workable by prehistoric men was recognised only in four volcanic complexes, located in the IIalian islands of Sardinia, Palmarola, Lipari and Pantelleria.
BIGAZZI G, ODDONE M, RADI, GIOVANNA
openaire +3 more sources