Over the past few years, substantial progress has been made in our understanding of explosive subaqueous volcanism. Direct observation of explosive subaqueous eruptions and field studies of deposits related to explosive submarine, sublacustrine, and subglacial eruptive activity have provided insights into those processes operating in active magmatic systems, into volcanic phenomena, and into the links between explosive subaqueous volcanism and ore deposits. Theoretical studies and experimental data have shown that explosive eruptions can occur at substantial water depths; studies of rocks from the modern and ancient seafloor have provided clear evidence for explosive activity, such as basaltic lava fountaining, Surtseyan-type...

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