Orientation of the eruption fissures and composition of the lavas of the Miyakejima volcano is indicative of the competitive processes of the regional tectonic stress and the local stress generated by the activity of a magma plumbing system beneath the volcano. We examined the distributions and magmatic compositions of 23 fissures that formed within the last 2800 years, based on a field survey ...

One of the most important components of the magmatic plumbing system of Kilauea Volcano is the shallow (2–4 km deep) magma storage reservoir that underlies the volcano’s summit region. Nevertheless, the geometry (shape and size) of Kilauea’s summit reservoir is controversial. Two fundamentally different models for the reservoir’s shape have been proposed based on geophysical observations: a ple...

Direct constraints on the ascent, storage and eruption of mantle melts come primarily from exhumed, long-frozen intrusions. These structures, relics of a dynamic magma transport network, encode how Earth’s crust grows and di erentiates over time. Furthermore, they connect mantle melting to an evolving distribution of surface volcanism. Disentangling magma transport processes from the plutonic r...

de Fuca Ridge at the "source site" of the 1993 eruption William Menke Lamont−Doherty Earth Observatory of Columbia University, Palisades NY 10964 USA Michael West Lamont−Doherty Earth Observatory of Columbia University, Palisades NY 10964 USA Maya Tolstoy Lamont−Doherty Earth Observatory of Columbia University, Palisades NY 10964 USA (07−December−01) ABSTRACT Seismic imaging reveals a shallow−c...