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Tag: Magma

Chemical tipping point of magma determines explosive potential of volcanoes

Volcanic eruptions are the most spectacular expression of the processes acting in the interior of any active planet. Effusive eruptions consist of a gentle...

When magma prevents volcanic eruptions

A spectacular proof of our planet's activity, calderas are huge topographic depressions, similar to flat-bottomed craters, with a diameter of several tens of kilometres....

Moon’s crust underwent resurfacing after forming from magma ocean

The Earth's Moon had a rough start in life. Formed from a chunk of the Earth that was lopped off during a planetary collision,...

Magma held in ‘cold storage’ before giant volcano eruption

Long Valley, California, has long defined the "super-eruption." About 765,000 years ago, a pool of molten rock exploded into the sky. Within one nightmarish...

New magma pathways after giant lateral volcano collapses

Giant lateral collapses are huge landslides occurring at the flanks of a volcano. Giant lateral collapses are rather common events during the evolution of...

Magma chambers have a sponge-like structure

Supervolcanoes are superlative in every respect. The eruption of the Toba caldera in modern-day Indonesia approximately 74,000 years ago was so powerful that it...

Getting to the root of Iceland’s molten rock origins

New data reveal an unprecedented depiction of a region of partially molten rock deep within the Earth, which appears to be feeding material in...

Volcanic Crystals Give a New View of Magma

Volcanologists are gaining a new understanding of what's going on inside a shallow magma reservoir that lies below an active volcano and they're finding...

Deep magma reservoirs are key to volcanic ‘super-eruptions,’ new research suggests

New study shows the importance of large reservoirs in creating Earth's most powerful volcanic eruptions and explains why they are so rare Large reservoirs of...

New study documents aftermath of a supereruption, and expands size of...

The rare but spectacular eruptions of supervolcanoes can cause massive destruction and affect climate patterns on a global scale for decades - and a...

Deep mantle chemistry surprise: Carbon content not uniform

Even though carbon is one of the most-abundant elements on Earth, it is actually very difficult to determine how much of it exists below...

Modeling magma to find copper

Copper is an essential element of our society with main uses in the field of electricity and electronics. About 70% of the copper comes...

Cyclic change within magma reservoirs significantly affects the explosivity of volcanic...

A new study published in Geology uses pockets of melts trapped within crystals to understand the conditions occurring beneath volcanoes before explosive eruptions. Volcanologists...

Enormous dome in central Andes driven by huge magma body beneath...

A new analysis of the topography of the central Andes shows the uplifting of the Earth's second highest continental plateau was driven in part...

Magma movements foretell future eruptions

Geologists at Uppsala University have traced magma movement beneath Mt. Cameroon volcano, which will help monitoring for future volcanic eruptions. The results are published...

When Magma Meets Water

Scientists are trying to determine the potential dangerous effects of introducing water into a pressurized pocket of magma underground.

Magma build-up at active Japanese volcano poses threat to ‘Naples of...

One of Japan's most active volcanoes could be close to a major eruption, threatening the safety of hundreds and thousands of residents of a...

Magma accumulation highlights growing threat from Japanese volcano

A research team led by the University of Bristol has found magma build-up beneath Japan's Aira caldera and Sakurajima volcano may indicate a growing...

Surface fractures as magma moves

A rare period of volcanic unrest in the rural Harrat Lunayyir region of Saudi Arabia in 2009 allowed researchers at King Abdullah University of...

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