Terra preta is able to keep carbon permanently in the soil. |
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The 'evidence' for the claims is based primarily on terra preta, ancient soils in Central Amazonia, formed hundreds or even thousands of years ago. |
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The evidence to support this claim comes from the discovery of numerous geoglyphs dating from between 1 and 1250 AD and terra preta. |
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Copper, Cu, has been found associated with cuprite octahedra at Pedra Preta, where these minerals occur on talc and magnesite. |
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Would you like to play for Sao Paulo or Ponte Preta before you do call it a day? |
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Lima HN, Schaefer CER, Mello JWV, Gilkes RJ, Ker JC Pedogenesis and pre-Columbian land use of Terra Preta Anthrosols of Western Amazonia. |
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