The "End of an Arc: The Remarkable Life and Death of a Volcanic Arc" is a partnership that started in 2014 with the goal of investigating the Canadian segment of the Northern Cascade Arc, also known as the Garibaldi Volcanic Belt. Specifically, we aim to characterise the evolution of a continental volcanic arc in space and time and develop an understanding of this evolution in terms of links among key mantle, magmatic, tectonic and surface processes.
We will therefore
assemble and support a team of researchers spanning a range of fields of Earth Science over an extended period through a formal long-term collaboration among established scientists, post-doctoral fellows and graduate students.
develop spatially and temporally integrated models to investigate:
whether the magnitude of spatial, temporal and compositional variability in the history of GVB eruptions, from one volcano to the next, is sufficiently small in comparison to the long-term mean eruption rate such that the arc can be considered to be reliably in steady-state conditions?
to what extent is this variability related to inherent time-dependence and complexity in the flow and heat transfer properties of the underlying mantle flow?
to what extent is this variability related to the internal dynamics, architecture and thermal history of the Cascade crustal magmatic system?
to what extent is this variability influenced by complex responses of the crustal stress regime to the monotonic growth, time-dependent erosion or abrupt collapse of volcanic edifices over time?