Which of the following can occur within a magma chamber?
A) Sinking or floating crystals may change the composition of the remaining magma.
B) Wall rocks can melt and become incorporated into the magma.
C) If two magmas mix, the resulting magma would be between the compositions of the two magmas.
D) All of these.

Question

Quizplus · Accepted Answer

All of the described processes can occur within a magma chamber. Crystals can sink or float depending on their density relative to the magma, changing its composition. Wall rocks can melt and mix into the magma, altering its composition. Additionally, if two different magmas come into contact and mix within a chamber, the resulting magma will have a composition that is intermediate between the two original magmas.

Which of the Following Can Occur Within a Magma Chamber