Raman spectroscopy applied to understanding Prehistoric Obsidian Trade in the Pacific Region
Obsidian is a natural volcanic glass which is amorphous and isotropic. These characteristics allow it to be easily shaped as little force is required to produce conchoidal fractures of predictable forms and sizes. A class of obsidian artefacts known as 'stemmed tools' have been found in locations situated across lowland Papua New Guinea and have been approximately dated to the early and middle Holocene periods (c. 10 000-3400 BP). The fragile nature of these tools, and their rarity, mean that...[Show more]
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