题目内容

What type of magma can be classified into when the content of SiO2 is between 52-65% in weight?

A. ultrabasic magma
B. basic magma
C. intermediate magma
D. acidic magma

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The major eruption types we discussed in the class include:

A. Fissure eruption
B. Central eruption
C. Random eruption
D. Inside eruption

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The sequence in which the minerals crystallize from magma in the continuous reaction series is:

A. From Ca-rich plagioclase to Na-rich plagioclase
B. From Na-rich plagioclase to Ca-rich plagioclase
C. From olivine to biotite
D. From biotite to olivine

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To crystallize the magma, it need to :

A. Cool the liquid
B. Decrease pressure
C. Remove water
D. Increase pressure

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Intrusion forms intrusive rocks, which rocks have a depth of more than 3 kilometers from the surface of the Earth?

A. Plutonic rocks
B. Hypabyssal rocks

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What type of magma can be classified into when the content of SiO2 is between 52-65% in weight?

A. ultrabasic magma B. basic magma C. intermediate magma D. acidic magma

The major eruption types we discussed in the class include:

The sequence in which the minerals crystallize from magma in the continuous reaction series is:

To crystallize the magma, it need to :

Intrusion forms intrusive rocks, which rocks have a depth of more than 3 kilometers from the surface of the Earth?

A. ultrabasic magma
B. basic magma
C. intermediate magma
D. acidic magma