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PROGRAMA GEOLOGIA DO BRASIL Contrato CPRM- UFPA Nº

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Figura 3.24: Diagramas para as rochas do Tonalito Arco Verde da Folha Marajoara.<br />

(a) Diagrama R1 x R2 (La Roche et al. 1980); (b) Diagrama discriminante de<br />

ambiente tectônico, (Y+Nb) x (Rb) (Pearce et al 1984).<br />

Programa Geologia do Brasil – Folha Marajoara<br />

75

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