| Amazon Geology |
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| Ø | Under
bauxite exposed on slopes. |
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| Ø | Rio
Jari – Pliocene, very fine
grained 75% |
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| -2
micron. 36m thick deposit. |
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| Ø | Rio
Capim – also Tertiary. Coarser than |
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| Jari. Thinner and some grit. |
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