Multiple olivine He isotopic signatures from a single rock sample

• Autor(es): Madureira, Pedro ; Moreira, Manuel ; Mata, João ; Queiroz, Gabriela
• Data: 2004
• Identificador Persistente: http://hdl.handle.net/10174/2444
• Origem: Repositório Científico da Universidade de Évora
• Assunto(s): He isotopic data; Olivine
• Tipo de Documento: Artigo
• Idioma: Inglês
• Editor(es): Elsevier

Descrição

For a porphyritic basaltic sample from Terceira Island, He isotopic analysis of 3 distinct olivine separates defined by petrographic characteristics and composition. He isotopic ratios range between 8.6 and 9.7 R/Ra and interpreted in function of magmatic evolution and and host rocks assimilation processes.