Integrating petrochronology, magma dynamics, and volcanic unrest at the Three Sisters volcanic complex. In this NSF-funded project I aim to characterize the modern magmatic system underlying the Three Sisters Volcanic Complex in the Cascades by modeling the gravity anomalies measured over the volcanic complex. We also aim to determine the petrogenesis of the lavas and associated explosive products that erupted during the last 50,000 years. By integrating our results with the existing geodetic observations of recent uplift and thermodynamic models of magma emplacement over the pleistocene we will determine the temporal and spatial evolution of the magmatic system up to now.

Collaborators: Nathan Andersen (USGS CVO), Joe Dufek (U. Oregon), Annika Dechert (U. Oregon).

Status: ongoing.