PUBLIC TALK: From Ores to Ash: the Inner Workings of Hazardous Volcanoes
|From Ores to Ash: the Inner Workings of Hazardous Volcanoes
A public lecture by Jon Blundy, Professor of Petrology, University of Bristol and 2019 UWA Robert and Maude Gledden Senior Visiting Fellow.
In this public lecture Professor Blundy will discuss how our concept of volcanic systems has evolved in the light of recent geophysical and geochemical studies from the classic magma chamber concept, so beloved of textbooks, to a more nuanced system of partially molten rock that straddles the entire crust of the Earth. Professor Blundy will explain how such ‘transcrustal magma systems” can account for apparent dichotomy of outcome (“ashes or ores”) and what such systems mean for the monitoring of restless volcanoes. He will show that the build-up to very large eruptions may be much shorter than previously assumed, while some of the world’s largest copper ore deposits may form in the geological blink of an eye. The talk will draw on examples of Professor Blundy’s fieldwork in some of the world’s most hazardous volcanic regions.
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