Use of obsidian in pottery of the Neolithic in the area around Lipari was found to be significantly less at a distance representing two weeks journeying. Obsidian scalpel synonyms, Obsidian scalpel pronunciation, Obsidian scalpel translation, English dictionary definition of Obsidian scalpel.Īnatolian sources of obsidian are known to have been the material used in the Levant and modern-day Iraqi Kurdistan from a time beginning sometime about 12,500 BC. The first attested civilised use is from excavations at Tell Brak dated the late fifth millennia. A usually black or banded, hard volcanic glass that displays shiny, curved surfaces when fractured and is formed by rapid cooling of lava. Properly created, they are considerably sharper than honed steel razor or scalpel blades manufactured by modern technology (Fig. Obsidian was valued in Stone Age cultures because, like flint, it could be fractured to produce sharp blades or arrowheads. Like all glass and some other types of naturally occurring rocks, obsidian breaks with a characteristic conchoidal fracture. It was also polished to create early mirrors. Modern archaeologists have developed a relative dating system, obsidian hydration dating, to calculate the age of obsidian artefacts. Obsidian is used as a cutting tool because of its conchoidal fracturing where it breaks into thin sheets and have sharp edges. In stone age obsidian was used as a cutting tool for making any sharp tool and it is still used as a cutting tool in modern surgeries.
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