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【答案】应助回帖
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zuishen: 金币+14, 翻译EPI+1 2012-04-19 22:41:37
Mally89: 金币+1, 感谢应助！~欢迎常来！~吼吼！~\(^o^)/~ 2012-04-20 12:26:29
sltmac: 金币+1 2012-05-10 09:17:57
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The crystallization temperature of medium-grained porphyritic biotite granite is an average of 733 ℃ that of the medium-grained biotite granite is 714 ℃, the fine-grained two-mica granite is 707 ℃; The ratio of Zircon [Ce4 + / Ce3 +] zircon are 24.74, 28.27, 29.77 ,respectively ; Δ Ox of the medium-grained porphyritic biotite granite equals about -0.04 to-0.42 , Δ Ox ofmedium -grained biotite granite equals about -0.02 to-0.13,Δ Ox of the fine-grained two-mica granite equals about -0.02 to-0.17. As the magma evolution, from the medium-grained porphyritic biotite granite to medium -grained biotite granite , andfine-grained two-mica granite, the crystallization temperature drop, oxygen fugacity increase. As the magma evolution, the content of fluoride and carbon dioxide in the rock increased , and the content of chlorine has a little change. The values of those fluidslog outfluid (fH2O) / (fHF) fluid, log (fH2O) / (fHCl) fluid, log (fHF) / (fHCl) , out from late magmatic evolution differentiation, are respectively 0.37 ~ 1.48, 2.27 ~ 4.83, 3.89 ~ 2.14. |
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