Iron-heavy minerals are believed to have sunk through the magma before floating to the surface in a new form of mountain.
Underneath our feet tectonic plates shift, magma bubbles, water boils, and both regularly erupt.
Like magma seeping up through geological faults, this emotion can explode in unexpected ways.
But generally the magma rises through a fairly small channel.
At any rate, it is somewhat above this discontinuity that magma is formed.
The simplest form of intrusion, the dike, results under whatever condition the summit portion of the magma comes to rest.
On the other hand, the magma could find weaknesses we haven't detected.
However, explosive action in a volcano usually comes when the magma meets enough water to create steam.
The scientist pointed out the magma on Dr. Williams' sketch.
You see, if the lens of magma is increasing, El Viejo will swell up slightly.
mid-15c., "dregs," from Latin magma "dregs of an ointment," from Greek magma "thick unguent, ointment," from root of massein "to knead, mold," from PIE *mag- "to knead" (see macerate). Geological meaning "molten rock" is 1859. Related: Magmalic.
magma mag·ma (māg'mə)
A mixture of finely divided solids with enough liquid to produce a pasty mass.
A suspension of particles in a liquid, such as milk of magnesia.
Plural magmata (māg-mä'tə) or magmas
The molten rock material that originates under the Earth's crust and forms igneous rock when it has cooled. When magma cools and solidifies beneath the Earth's surface, it forms what are known as intrusive rocks. When it reaches the Earth's surface, it flows out as lava and forms extrusive (or volcanic) rocks.