Chivay obsidian
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The Chivay obsidian source (71.5355° S, 15.6423° W, 4972 masl) is the geological origin of a chemical group of obsidian that is found throughout the south-central Andean highlands including southern Peru, western Bolivia, and northern Chile. The Chivay obsidian source, also known as the Cotallalli type or the Titicaca Basin type, makes up over 90% of the obsidian artifacts analyzed from the Lake Titicaca Basin. Obsidian from the Chivay source is found in large and homogenous nodules in a high altitude volcanic depression approximately ten km to the east of the town of Chivay in the Colca Valley (Caylloma, Arequipa, Peru). Obsidian production at the Chivay source and evidence from the adjacent puna and valley areas were the subject of dissertation research. Obsidian from the Chivay source was found at the Archaic and Formative site of Jiskairumoko.
