Multiple olivine He isotopic signatures from a single rock sample

• Author(s): Madureira, Pedro ; Moreira, Manuel ; Mata, João ; Queiroz, Gabriela
• Date: 2004
• Persistent ID: http://hdl.handle.net/10174/2444
• Origin: Repositório Científico da Universidade de Évora
• Subject(s): He isotopic data; Olivine
• Document Type: Article
• Language: English
• Editor(s): Elsevier

Description

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.