3.30 Ga high-silica intraplate volcanic-plutonic system of the Gavião Block, São Francisco Craton, Brazil: Evidence of an intracontinental rift following the creation of insulating continental crust

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• 作者：Stefano A. Zincone^a ; ^b ; ^{teozincone@gmail.com} ; Elson P. Oliveira^a ; Oscar Laurent^c ; Hong Zhang^d ; Mingguo Zhai^e
• 关键词：Volcanic&ndash ; Plutonic system ; High-silica magmatism ; Intraplate tectonics ; Paleoarchean Gaviã ; o Block ; Sã ; o Francisco Craton
• 刊名：Lithos
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：266-267
• 期：Complete
• 页码：414-434
• 全文大小：6229 K
• 卷排序：266

文摘

3.3 Ga plutonic–volcanic system represents within-plate intracrustal magmatism. High-silica magmatism follows formation and stabilization of new continental crust. Rhyolites derived from highly silicic residual liquid in a shallow (< 10 km) reservoir Granites formed by differentiation of the diorite gneisses that occur regionally High-temperature crustal magmatism was not similar to TTGs and potassic magmatism.