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Question 10 of 10
Which must be true for metamorphism to occur?
OA. The parent rock must be in liquid form.
OB. The process must take place underground.
C. The parent rock must be igneous.
OD. The grain size must become smaller.
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Answer :

GinnyAnswer

Final answer:

Metamorphism occurs when solid rock undergoes changes without melting. Parent rock mineral composition, temperature, pressure, and fluid presence are crucial for metamorphism.


Explanation:

Metamorphism occurs when solid rock changes in composition and/or texture without the mineral crystals melting. For metamorphism to occur, the parent rock must possess certain characteristics:

  • Mineral composition: Stability of minerals plays a crucial role during metamorphism.
  • Temperature and pressure: Metamorphism occurs under subsolidus conditions.
  • Fluid presence: Types of fluids, mainly water, can influence metamorphic processes.

Learn more about Metamorphic processes here:

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