No latest activity reported for East Diamante.

Below is a summary of eruption dates and Volcanic Explosivity Indices (VEI).

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Bloomer S H, Stern R J, Smoot N C, 1989. Physical volcanology of the submarine Mariana and Volcano arcs. {Bull Volc}, 51: 210-224

Embley R W, Baker E T, Chadwick W W Jr, Lupton J E, Resing J A, Massoth G J, Nakamura K, 2004. Explorations of Mariana Arc volcanoes reveal new hydrothermal systems. {Eos, Trans Amer Geophys Union}, 85: 37 and 40

Smithsonian Institution-GVN, 1990-. [Monthly event reports]. {Bull Global Volc Network}, v 15-33

The dacitic East Diamante submarine volcano contains an elongated NE-SW-trending caldera with a pronounced rim on the NE side. A large post-caldera cone lies on the SW caldera rim, and a complex of lava domes was constructed in the center of the caldera. Several areas of hydrothermal activity including "black smoker" sulfide chimneys at the Black Forest site were detected on the central dome complex at depths of only a few hundred meters. These marked the shallowest black smokers yet discovered. The summit of the submarine volcano extends to within 127 m of the sea surface.