PROGRAMA GEOLOGIA DO BRASIL Contrato CPRM- UFPA Nº
PROGRAMA GEOLOGIA DO BRASIL Contrato CPRM- UFPA Nº
PROGRAMA GEOLOGIA DO BRASIL Contrato CPRM- UFPA Nº
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Tabela 3.1: Análises modais de rochas do Tonalito Arco Verde da Folha Marajoara.<br />
Variedades Petrográficas Bt-Anf-Tonalito Bt-Tonalito<br />
Amostra / Mineral F-15 F-21B F-3B Média F-20B F-57A F-57F F-58-1 F-58C F-62N MAR-109 MAR-117 MAR-148 MAR-149 Média<br />
Quartzo 30.89 31.81 17.68 26.79 43.81 38.80 26.67 33.22 27.42 35.68 36.40 34.80 27.40 28.20 33.24<br />
Microclínio 1.26 4.12 3.45 2.94 2.66 4.60 2.96 2.41 2.86 1.65 7.60 3.20 1.40 1.20 3.05<br />
Plagioclásio 49.53 53.69 63.88 55.70 44.18 47.06 59.11 52.62 63.51 52.58 48.90 45.80 52.10 52.80 51.87<br />
Anfibólio 0.07 2.36 7.55 3.33 0.00<br />
Biotita 13.29 6.61 5.86 8.59 8.83 8.27 9.66 11.17 3.12 8.88 3.90 14.10 13.80 13.10 9.48<br />
Muscovita 1.28 0.01 0.51 0.60 0.09 0.07 0.11 Tr 0.71 Tr 1.40 Tr Tr Tr 0.24<br />
Clorita 2.08 0.51 0.14 0.91 0.07 0.19 0.85 0.41 1.04 0.3 0.2 Tr 0.6 0.5 0.42<br />
Epidoto 1.57 0.36 0.35 0.76 0.28 0.64 0.43 Tr 0.76 0.06 1 1.3 3.8 3.2 1.15<br />
Opacos 0.02 0.53 0.56 0.37 0.07 0.04 0.21 0.18 0.59 0.85 Tr 0.40 0.20 0.20 0.27<br />
Apatita Tr Tr Tr Tr Tr Tr Tr Tr Tr Tr 0.10 0.10 0.10 0.10 0.04<br />
Titanita Tr Tr Tr Tr Tr Tr Tr Tr Tr Tr 0.20 0.40 0.50 0.11<br />
Zircão Tr Tr Tr Tr Tr Tr Tr Tr Tr Tr Tr Tr Tr Tr 0.00<br />
Máficos 17.03 10.37 14.46 13.95 9.25 9.14 11.15 11.76 5.51 10.09 5.30 15.80 18.80 17.50 11.43<br />
A+P 50.79 57.81 67.33 58.64 46.84 51.66 62.07 55.03 66.37 54.23 56.50 49.00 53.50 54.00 54.92<br />
Microclínio* 1.54 4.60 4.06 3.40 2.93 5.09 3.34 2.73 3.05 1.84 8.18 3.82 1.73 1.46 3.42<br />
Quartzo* 37.82 35.49 20.80 31.37 48.33 42.89 30.05 37.64 29.24 39.68 39.18 41.53 33.87 34.31 37.67<br />
Plagioclásio* 60.64 59.91 75.14 65.23 48.74 52.02 66.61 59.63 67.72 58.48 52.64 54.65 64.40 64.23 58.91<br />
Abreviações: A – Álcali-feldspato; P – Plagioclásio; Ep – epidoto; Anf-anfibólio; Bt-biotita; * recalculado a 100%.<br />
Programa Geologia do Brasil – Folha Marajoara<br />
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