Volatile metals in volcanic systems


Department of Earth Sciences
South Parks Road
Oxford OX13AN

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Fri 17th Nov 2023
12 noon
Booking required

Speaker: Prof Marie Edmonds, Cambridge

Abstract: Volcanic gases contain species such as carbon dioxide, water and sulfur, but also small but significant concentrations of volatile metals and metalloids, such as copper, selenium, antimony. These elements may be toxic in large concentrations in our surface environment, but they are also nutrients and critical components of life. Magmatic systems and volcanoes play an important role in cycling these elements from the interior of our planet to the shallow crust, atmosphere and oceans. In this talk I will review the state of knowledge regarding the behaviour of these elements in silicate melts and exsolved fluids, based on measurements of volcanic gases, glasses, sulfides and fluid inclusions. I will discuss how the abundance and behaviour of these metals in volcanic and magmatic  fluids differs between tectonic settings (and why) and the factors maximising the flux of these species to the surface environment. These studies help us to interrogate geological records such as ice cores, understand the formation of critical metal deposits, and understand better the links between metal cycling and life.

Venue: Seminar rooms or join online via zoom link

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