GEO Wednesday: Exploring volcanoes’ roots - a journey to Patagonia and ... Blindern’s basement!
Lecture by Olivier Galland.
Volcanoes have fascinated humans for millennia. However, the processes governing volcanic eruptions remain to a great extent poorly understood. The main reason is that the migration of magma from the deep Earth’s interior to the surface at active volcanoes, through the so-called volcano plumbing system, is out of reach for direct observations.
To overcome this challenge, Olivier Galland has led field expeditions in northern Patagonia to study ancient volcanoes, the roots of which are exposed by erosion. During the expeditions in this remote part of the world, he and his team have integrated direct geological observations in dramatic landscapes with remote sensing observations from drones. Nevertheless, because these volcanoes are extinct, their dynamics at the time of activity are challenging to unravel. To overcome this, Galland designed a suite of laboratory apparatuses to simulate the complex processes of magma migration through the Earth’s crust.
Olivier Galland works as a senior researcher and scientific coordinator for the Fluid Earth Group at PGP (Physics of Geological processes), UiO. In his presentation he will report on his fantastic field experience in Patagonia and on the inspiring and fascinating laboratory models that are run at Blindern.