Petrologia das Rochas Vulcânicas da Península Fildes, Ilha Rei George, Antártica

• Published in: Pesquisas em Geociências
• Main Authors: MACHADO, ADRIANE, CHEMALE JUNIOR, FARID, DE LIMA, EVANDRO FERNANDES, FIGUEIREDO, ANA MARIA GRACIANO
• Format: Article in Journal/Newspaper
• Language: Portuguese
• Published: Instituto de Geociências /Universidade Federal do Rio Grande do Sul 1998
• Subjects: volcanic rocks; Fildes Peninsula; Antarctica; Geociências; Fildes; Fildes peninsula; península Fildes; South Shetland Islands; Antarc*; antartic*; Antártica
• Online Access: https://seer.ufrgs.br/index.php/PesquisasemGeociencias/article/view/21172

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...