Understanding the development and evolution of volcanic plumbing systems: Insights from analogue experiments

The mechanics of sill formation are important for understanding magma distribution within the shallow crust and the tendency for these magmas to intrude or erupt. I will present the results from a series of layered gelatine analogue experiments monitored by Particle Image Velocimetry (PIV) to document the small-scale deformation processes that occur during dyke and sill emplacement. PIV provides new insights into the dynamics of sill formation by allowing small-scale stress and strain perturbations within the host to be measured for the first time at the time of sill inception. These experiments highlight host deformation during intrusion which occurs between crustal layers with contrasting elastic properties, and the role this plays in volcanic plumbing system development.


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