John Maclennan
University Lecturer in Earth Sciences
Fellow of Emmanuel College

I use the rocky products of volcanic eruptions to understand processes that occur inside the earth.   Everybody knows that volcanoes are dangerous and a looming hazard for much of the global population. But these mouths sometimes speak of the deep earth. I use the chemistry of lava to investigate how magma is made in the earth and how it moves upwards to feed eruptions. I also study the links between volcanism and processes that influence the earth's surface, such as glaciation, hydrothermal activity, climate change and uplift.

What sort of work does this research involve? (for non-experts)

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