Source of volcanic glass for ancient Andean tools

Article Abstract:

Peru's ancient hunters used obsidian to make spear points and knives. The location of the Quispisisa quarry that provided obsidian for central and northern Peru has long been known, but the source of the Titicaca-basin-type obsidian has remained elusive. Chemical analysis of such tools, used throughout Bolivia and Peru, suggests that most of the obsidian used in the south central Andes derived from the rediscovered Cotallalli quarry in Arequipa, Peru.

Observations, Peru, Antiquities, Andes, Composition, Natural resources, Anthropological research, Obsidian, Civilization, Ancient, Ancient civilization

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Out in the cold

Article Abstract:

Humans are thought to have live in Arctic regions during the ice age, some 40,000 years in the past. The implications of this are examined in detail.

Glacial epoch, Ice age

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Human presence in the European Arctic nearly 40,000 years ago

Article Abstract:

There is evidence of the presence of humans almost 40,000 years ago, in the Arctic region, and this has implications for the study of evolution.

Evolution (Biology), Evolution, Arctic peoples

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