Recognition features of felsic pyroclastics of Serra do Tombo formation, Minas Gerais, Brazil
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- 作者：Viní ; cius José ; de Castro Paesa ; Frederico Ozanam Raposob ; Geraldo Norberto Chaves Sgarbic ; Mariangela Schiazzad ; Francesco Stoppad ; fstoppa@unich.it" class="auth_mail" title="E-mail the corresponding author
- 关键词：Minas Gerais ; Felsic pyroclastic rocks ; Ignimbrite ; Eutaxitic texture ; Agglutinated lapilli ; Glass menisci
- 刊名：Journal of South American Earth Sciences
- 出版年：2016
- 出版时间：March 2016
- 年：2016
- 卷：66
- 期：Complete
- 页码：56-72
- 全文大小：10361 K
文摘
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Lower Cretaceous, rhyodacitic Serra do Tombo ignimbrite occurs in Minas Gerais.
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Flow-banded, eutaxitic texture and flattened and agglutinate lapilli occur.
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Two kind of glasses and glass menisci indicate liquid immiscibility.
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Geochemistry suggests continental crust melting by underplating.