Question

Which of the following can occur within a magma chamber? Sinking or floating crystals may change the composition of the remaining magma, wall rocks can melt and become incorporated into the magma, or if two magmas mix the resulting magma would be between the composition of the two magmas?

1) Sinking or floating crystals changing the composition of the remaining magma
2) Wall rocks melting and becoming incorporated into the magma
3) Mixing of two magmas resulting in a magma with a composition between the two
4) None of the above

Answer 1

Sinking or floating crystals can change the composition of the remaining magma in a magma chamber, wall rocks can melt and become part of the magma, and two different magmas can mix to create a magma with an intermediate composition.

Step-by-step explanation:

Within a magma chamber, several processes can occur. Sinking or floating crystals may change the composition of the remaining magma. Additionally, wall rocks can melt and become incorporated into the magma. Finally, if two different magmas mix, the resulting magma will have a composition that is between the composition of the two original magmas.