Van Tuyl Lecture (Virtual): Dr. John Eichelberger, University of Alaska Fairbanks

Dr. John Eichelberger, Geological Society of America Distinguished Lecturer, Professor Emeritus, University of Alaska Fairbanks

Topic: Drilling to Magma

Abstract: Many questions about how magma is stored in the crust, evolves, and drives hydrothermal convection could be answered by drilling the transition from hydrothermal to magmatic regimes and sampling magma in situ. Although this may seem impossible, it has already happened by accident during geothermal development in Africa, Hawaii, and Iceland. I will review the quest for magma: what we have learned from coring lava lakes as a proxy for magma chambers, what we can glean from the accidental drilling encounters with magma, and what is planned for an international magma observatory, Krafla Magma Testbed, in Iceland. The benefits of direct observation of the magmatic environment lie in understanding how planetary silicate crust evolves, as well as leaps forward in productivity in geothermal energy and reliability of eruption forecasts.

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