Abstract
Bræðravirki is a hyaloclastic dominated tindar in the Western Volcanic Zone of Iceland. It is geochemically distinct from the surrounding region. This study focused on plagioclase geochemistry analyzed using an electron microprobe. The plagioclase demonstrated normal zoning, reverse zoning, rounded zone corners, skeletal texture, and sieve texture. A model for magma evolution was constructed using the presence of the zoning, textures, and An content. The model has three stages: separate magma evolution, injection and mixing, and simultaneous eruption and quenching event. The importance of magma mixing in subglacial volcanism should be evaluated and possibly included in the current theory of tindar formation.
Advisor
Pollock, Meagen
Second Advisor
Wilson, mark
Department
Earth Sciences
Recommended Citation
Topham, Judith G., "Magmatic Evolution of the Bræðravirki Ridge Basalts in Western Iceland" (2023). Senior Independent Study Theses. Paper 10599.
https://openworks.wooster.edu/independentstudy/10599
Disciplines
Geochemistry | Geology | Volcanology
Publication Date
2023
Degree Granted
Bachelor of Arts
Document Type
Senior Independent Study Thesis
© Copyright 2023 Judith G. Topham