Petrologia das Rochas Vulcânicas da Península Fildes, Ilha Rei George, Antártica
The Paleocene-Eocene volcanic activity in the Fildes Peninsula is marked by basaltic to basalt-andesitic lavas and dykes with subordinate amounts of dacites and rhyolites. Studies of mineral chemistry point to calcic plagioclase (An72-95) and augitic pyroxene phenocrysts and seldom grains of pigeoni...
Published in: | Pesquisas em Geociências |
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Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | Portuguese |
Published: |
Instituto de Geociências /Universidade Federal do Rio Grande do Sul
1998
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Subjects: | |
Online Access: | https://seer.ufrgs.br/index.php/PesquisasemGeociencias/article/view/21172 |