Quirky quartz and funny feldspars

What happens in the deep crust during a large impact event?

Professor Roger Gibson, Geosciences Head of School, will present this “Geotalk”. In this talk, Gibson will show how short-term shock processes and longer-term thermal metamorphic processes triggered by giant impacts compete within the lower crust to create a range of complex, but nonetheless distinctive, mineralogical changes that can be used to identify deeply eroded large impact sites.

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