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生词:smelting熔炼 extract提取 ore矿石 landslide滑坡
Pre-Columbian was a center for metallurgy
// But never found remnants and source + S were thought to have been the first metallurgists
// new study: pre-Columbian civilizations were smelting there 1000 years ago
When extracting metals, debris settle in nearby water----pollution
CAC --- sediment
Chemical analysis detected signs of smelting in sediments
Early: most were copper and bronze--->silver (lead pollution) in 1450AD: fist in Incra region-->European colonialism-->modern Peru
Furnaces were destroyed by landslides (plague the highlands)
• Metallic artifacts: Peru = center for metallurgy
• But no remnants of smelting furnaces
○ Spaniards: first metallurgist?
• However new study: people in Peru were melting
○ Metals: polluted a lake
○ [Cooke]
§ hammered tube
§ Withdraw sediment
§ Analysis: signs of smelting
□ A.D. 1000: Copper and bronze
® After the decline of the Wari Empire
□ A.D. 1450: lead
® Inca reign→European →modern Peru
○ Missing furnaces: Destroyed by landslides