Brazilian twist to tale of the first Americans

• Autores: Michael Marshall
• Localización: New scientist, ISSN 0262-4079, Nº. 2914, 2013, pág. 12
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Humans lived in South America at the height of the last ice age, thousands of years earlier than people thought according to a controversial study. A team claims to have found 22,000-year-old stone tools at a site in Brazil, though other archaeologists are disputing the claim. Christelle Lahaye of Michel de Montaigne Bordeaux 3 University in France and colleagues excavated a rock shelter in north-east Brazil and found 113 stone tools. The team dated the sediments in which the tools were buried using a technique that determines when the sediments were last exposed to light.