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Evacuations Ordered As Chilean Volcano Increases In Activity

Why a big volcanic blow-up at the popular travel destimation Santorini 3200 years ago, but just a few hundred kilometers away, no drama at the volcanoes on Aegina , Methana and Poros islands? Thin sections of the lavas from these four volcanoes yield some of the reasons why. Some minerals only form at greater depths - and the hornblende in the lava from Aegina island indicates that the magma chambers there are deeper than the those underneath the Santorini caldera. But plate tectonics add another, hidden reason also, found research from the University of Johannesburg. Credit: Prof Marlina A. Elburg, University of Johannesburg

A tale of two kinds of volcanoes

Among the numerous hydrothermal mounds of the Jøtul field is the Nidhogg spring, named after a serpent-like dragon in Norse mythology that lives on the world tree Yggdrasil. The fluids with temperatures of 40 to 50 degrees Celsius at Nidhogg lead to the precipitation of barite and amorphous opal, and the numerous amphipods particularly like these temperatures. Photo: MARUM – Center for Marine Environmental Sciences, University of Bremen

Investigating newly discovered hydrothermal vents at depths of 3,000 meters off...

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Dwarf planet Ceres may have vanishing ice volcanoes

New study reveals insights on plate tectonics, the forces behind earthquakes,...

The eruption and volcanic material sedimentation processes of giant caldera eruptions are not well understood, making it also difficult to estimate their size. Kobe University researchers used seismic reflection surveys to visualize the sedimentary structure and analyzed collected sediment samples, enabling them to obtain important information on the distribution, volume, and transport mechanisms of the ejecta. © SHIMIZU Satoshi (CC BY)

Biggest Holocene volcano eruption found by seabed survey

Creating a stopwatch for volcanic eruptions

Ancient meteorite impact sparked long-lived volcanic eruptions on Earth

Seafloor hot springs a significant source of iron in the oceans

New insight may help predict volcanic eruption behavior

Simulating flow from volcanoes and oil spills

Mapping the Formation of an Underwater Volcano

The climatic toll of volcanic eruptions

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Understanding the copper heart of volcanoes

Calbuco Volcano

Detecting volcanic eruptions

Water Plus Magma = Increased Explosivity

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