_________Are Dissolved in Melts at Depth but They Have a Tendency

question 21

Multiple Choice

_________are dissolved in melts at depth but they have a tendency to evolve and vaporize at lower (atmospheric) pressure and drive volcanic processes.

• A) Crystals of quartz and feldspar
• B) Volatiles
• C) Silica, sodium, and potassium
• D) Volcanic lavas

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