Why are felsic lava flows so much more viscous than mafic ones?

Geography

1 answer:

ira [324]3 years ago

7 0

Answer:

Magma are the hot molten materials that rises up towards the surface due to the increasing force from the depth. These magma when comes out to the surface then they are considered as lava.

The felsic lava are those in which the amount of silica and aluminium is very high. Due to this high silica content, the viscosity is high. The amount of silica present in magma or lava is directly proportional to the viscosity of magma or lava. The felsic lava due to its high viscosity flows sluggishly.

Whereas, the basic lava are those in which the silica content is significantly less. Iron (Fe) and Magnesium (Mg) is mostly present in this type of lava. As a result of which it flows easily without any difficulty.

This is the reason why felsic magma (lava) are more viscous compared to the mafic magma (lava).

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A geologist looks at a piece of igneous rock under a microscope and sees tiny crystals of olivine, pyroxene, and plagioclase fel

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Igneous rocks are formed as magma solidifies on the earth surface.

The process that might have formed this rock is:

A. melting underground, violent volcanic eruption, and solidification above ground

<h3>Igneous Rocks</h3>

Igneous rocks are known to be rocks that are formed when the magma melts underground and rises up to the earth surface via volcanic eruptions.

When they rise to the earth surface, they cool and solidify. This process will then result to the production of crystals.

Intrusive and extrusive rocks are formed in this process.

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2 years ago

Carl said that if he is older than you, then you must be 16. Is this conjecture always true never true or sometimes true?

eduard

Answer:

Always true

Explanation:

If hes older than you he will always be older than you.

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