ResearchPast ProjectsDisequilibrium textures in magmatic systems
Joana Nilsson (BSc student)
View of northern Socotra Island with basalt dikes.
The magmatic and crystallization history of melts can be preserved in their petrographic textures. The recognition of disequilibrium textures such as zoning, resorption, disequilibrium reactions and breakdown of crystals, and the difference between phenocrysts, antecrysts and xenocrysts, etc., provides information about the environment in which the crystals formed and their history during magmatic evolution. In an open system, textures and compositions of crystallizing minerals change as the environment changes. This study looks at a suite of volcanic rocks from Socotra in order to investigate their magmatic history.