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Tabela 3.14: Análises químicas para rochas dos granitos anorogênicos da Folha Marajoara.<br />

Amostra C-29B C-106B C-141G K-85A C-39 K-68 K-81 C-141F K-144B ADR-218 ADR-67 C-58B K-32 K-72 C-109 K-51 C-57A K-113 C-103 C-30A<br />

SiO2 66.1 66.3 66.5 66.8 67.1 67.4 67.8 68.3 68.9 69.71 70.39 71 71 71 71.3 71.4 71.5 71.8 72.2 72.3<br />

TiO2 1.12 1.29 1.31 1.11 1.15 0.84 0.78 0.96 0.64 0.85 0.56 0.51 0.52 0.56 0.59 0.52 0.39 0.53 0.34 0.37<br />

Al2O3 13 12.3 13.3 12.6 12.4 13 13.3 13.9 12.8 12.07 13.09 12.5 13.1 12.5 13 13.2 13.1 13.1 13.5 12.2<br />

Fe2O3 3.78 3.46 3.79 3.85 2.76 3.08 2.49 1.34 2.23 3.68 2.71 1.59 1.93 1.96 2.49 1.73 1.06 1.8 1.06 1.02<br />

FeO 2.95 4.1 3.96 2.74 4.25 2.3 2.49 4.32 2.02 2.1 1 1.51 1.44 1.37 1.44 1.58 1.58 1.51 1.15 1.04<br />

MnO 0.12 0.11 0.12 0.1 0.15 0.09 0.09 0.12 0.08 0.1 0.06 0.07 0.05 0.05 0.08 0.07 0.08 0.06 0.06 0.04<br />

MgO 1.26 1.16 1.18 0.92 1.23 0.86 0.83 1.19 0.79 0.72 0.46 0.47 0.47 0.49 0.56 0.51 0.42 0.45 0.33 0.34<br />

CaO 3.19 3.73 3.7 2.93 2.77 2.44 2.59 2.84 2.18 2.4 2.01 1.63 2 2 1.92 1.87 1.29 1.77 1.32 1.59<br />

Na2O 3.91 3.25 3.44 3.72 3.53 3.69 3.57 3.34 3.72 3.34 3.38 3.16 3.6 3.53 3.61 3.77 3.37 3.47 3.6 3.42<br />

K2O 3.83 3.1 3.25 3.95 2.91 3.39 3.97 2.13 3.65 3.21 4.14 4.55 5.14 4.91 4.67 4.53 4.36 4.86 4.55 5.16<br />

P2O5 0.4 0.43 0.44 0.35 0.45 0.26 0.29 0.44 0.25 0.22 0.16 0.16 0.18 0.18 0.17 0.12 0.16 0.1 0.11<br />

PF 0.34 0.28 0.15 0.32 0.34 0.56 0.78 0.4 0.14<br />

Total 99.66 99.23 100.99 99.07 98.7 97.35 98.54 98.88 97.54 98.4 97.96 97.14 99.73 98.89 99.84 99.91 98.05 99.91 98.21 97.73<br />

Ba 790 1270 1260 1010 1240 1330 1330 1090 1373.4 950 1040 1010 1120 1260 780 850 940 1040<br />

Rb 203 84 82 142 135 127 168 92 198 150.3 192 205 186 212 178 239 263 253 219<br />

Sr 192 301 282 236 282 270 272 304 248 211.2 189 108 189 205 187 142 161 162 188<br />

Y 94 51 50 105 50 50 66 51 65 55 51 44 76 45 45 54 56 66 21<br />

Zr 313 360 340 356 352 399 354 355 299 394.7 238 230 318 301 232 252 251 246 130<br />

Nb 28 18 14 19 18 19 22 17 16 21.9 19 18 17 21 18 24 17 24 14<br />

Th 18.9<br />

Ga 20.3<br />

V 21<br />

Hf<br />

La 88.9<br />

Ce 185.3<br />

Pr 19.71<br />

Nd 70.4<br />

Sm 12.2<br />

Eu 2.32<br />

Gd 10.26<br />

Tb 1.58<br />

Dy 9.08<br />

Ho 1.82<br />

Er 5.42<br />

Tm 0.83<br />

Yb 4.84<br />

Lu 0.74<br />

ΣETRL 376.51<br />

(La/Yb) n<br />

12.40<br />

(La/Sm) n<br />

4.59<br />

(Dy/Yb) n<br />

1.22<br />

Eu/Eu* 0.63<br />

Rb/Sr 1.06 0.28 0.29 0.60 0.48 0.47 0.62 0.30 0.80 0.71 1.02 1.90 0.98 1.03 0.95 1.68 1.63 1.56 1.16<br />

Sr/Ba 0.24 0.24 0.22 0.23 0.23 0.20 0.20 0.23 0.15 0.20 0.10 0.19 0.18 0.15 0.18 0.19 0.17 0.18<br />

K2O/ Na2O 0.98 0.95 0.94 1.06 0.82 0.92 1.11 0.64 0.98 0.96 1.22 1.44 1.43 1.39 1.29 1.20 1.29 1.40 1.26 1.51<br />

#Mg 0.39 0.40 0.38 0.32 0.47 0.35 0.39 0.63 0.41 0.19 0.19 0.37 0.32 0.33 0.31 0.37 0.44 0.33 0.38 0.39<br />

Programa Geologia do Brasil – Folha Marajoara<br />

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