Marian Holness

Overview Speaker
University of Cambridge

I am interested in the processes that happen during solidifcation of magma and approach the problem primarily from a microstructural point of view. I have mainly concentrated on mafic systems and have shown how the microstructural record can be interrogated to detect timescales of intrusion and solidification, constrain the extent to which the magma convected, and differentiate between in situ crystal growth and crystal accumulation. I am now using this foundation to explore more silicic systems, with their very different fluid dynamical behaviour.

Marian Holness’ keynote (two parts):

Session

Theme 3: Architecture of crustal magmatic systems and rate of magmatic processes

This theme addresses the physical shape and connectivity of magma networks at all scales, from the crust to the grain boundary and from the source to the volcano, including the plutonic-volcanic connection. We will discuss the rates of processes such as melting, melt extraction, magma motion, pluton accretion, eruption, as well as the mechanical and chemical drivers of them.