 The melts originally came from the upper mantle which, over time, was progressively depleted by every following melting event.The Wells Gray-Clearwater volcanic field is one of the 10 volcanic areas in Canada associated with recent seismic activity; the others are Castle Rock, Mount Edziza, Mount Cayley, Hoodoo Mountain, The Volcano, Crow Lagoon, Mount Meager massif, Mount Garibaldi and Nazko Cone.Seismic data suggests that these volcanoes still contain living magma plumbing systems, indicating possible future eruptive activity.