Release date- 26082019 - The origin of gigantic magma
eruptions that led to global climatic crises and extinctions of species has remained controversial.
Instead, the study suggests that volcanoes are fed by so-called 'mush reservoirs' -- areas of mostly solid crystals with magma
in the small spaces between the crystals.
Amazingly, the brains behind the breakthrough claim volcanoes are telling their own stories as their secrets are locked inside magma
(2013) Primary magmas
at the volcanic front of the NE Japan arc: coeval eruption of crustal low-K tholeiitic and mantle-derived medium-K calc-alkaline basalts at Azuma Volcano.
The key, scientists say, is to elevate the temperature of the rock to more than 750 degrees Celsius, which can happen when hot magma
from deep within the Earth's crust rises to the surface.
This book is a collection of 12 papers that address four important issues in magma
transfer from mantle to surface, dynamics of magma
reservoir dynamics and processes of silicic melt generation.
The low viscosity of the basaltic magmas
released in Hawaiian-style eruptions on these volcanoes (Fig.
"Pervasive" migration is the motion of magma
through an extensive network of channels.
cool, crystals may accumulate on the floors, walls, and roofs of magma
chambers and form crystal mushes that initially contain 40 percent melt, but prior to solidification contain less than 15 percent trapped melt.
When mantle material melts to form magma
, it traps subsurface carbon.
Shergotty contains certain crystals that could only have formed if the magma
that makes up the rock was 2 percent water by weight.
In the Earth, such bodies of magma
tend to move towards the surface leading to volcanic eruptions.