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When lava hits water it is cooled quickly, which makes it look very dark and have a glass like appearance. It is the same with most extrusive igneous rocks, meaning rock that is made from molten rock material (lava or magma) that cools on the surface of Earth, rather than underneath Earth.
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Do cinder cones erupt felsic or mafic lava?
Composite volcanoes can erupt both mafic and felsic material, but intermediate material is the most common.
What happens to lava when a volcano erupt?
lava shoots out of the top
What happens to lava that does not erupt and stays under the surface?
Lava that does not erupt and stays under the surface will slowly cool and solidify, forming intrusive igneous rocks such as granite or diorite. These rocks may later be exposed at the Earth's surface through erosion or uplift.
Do volcanoes produce large amounts of ash when they erupt?
Volcanoes with high levels of water in their lava produce ash, those with dry lava produce no ash.
Do volcanoes erupt mainly due to the buildup of water vapor and carbon dioxide?
Volcanoes supplied by subduction zones usually erupt due to buildup of pressure of these gases. This lava tends to erupt explosively as solid pieces of ash, cinders, bombs, etc. often filled with gas bubbles. Volcanoes supplied by deep mantle hotspots have almost no gas in their lava and erupt due to buildup of magma rising from the hotspot. This lava tends to erupt quietly as a fluid.
Can a stratovolcano erupt blocky lava?
Yes. Stratovolcanoes can erupt blocky lava flows, basaltic lava flows, or may erupt explosively.
Do cinder cones erupt felsic or mafic lava?
Composite volcanoes can erupt both mafic and felsic material, but intermediate material is the most common.
When volcano erupt they expel what zircons or lava?
lava
What causes the quiet erupt and loud erupt?
Loud Erupt: The magma is really thick It is cooler lava More silicia Quiet Erupt: Thin Hotter lava low silica
What happens to lava when a volcano erupt?
lava shoots out of the top
Why do some volcanoes erupt in under water?
because they were formed under the sea so when they erupt the can form tsunamis
What do they do when the erupt?
its explodes and lava comes out
Can lava erupt from fissures?
yes
What lava is in fissure volcanoes?
Fissures usually erupt basaltic lava.
What happens to lava that does not erupt and stays under the surface?
Lava that does not erupt and stays under the surface will slowly cool and solidify, forming intrusive igneous rocks such as granite or diorite. These rocks may later be exposed at the Earth's surface through erosion or uplift.
How did Mount Rinjani erupt?
lava came out lava came out lava came out sik answers
Does Mount Fuji has any type of magma?
Its lava (not magma) is a water saturated granitic lava that is typical of subduction zone volcanoes. It tends to erupt explosively due to the sudden flash evaporation of the water as the lava leaves the volcano.
