A Porphyritic Texture Where Large Crystals Are Embedded in a Matrix

question 103

Multiple Choice

A porphyritic texture where large crystals are embedded in a matrix of small crystal may form when ________.

• A)climate change causes crystals to cool at different rates
• B)crystals of different compositions cool at different rates
• C)crystals of different compositions grow to different sizes
• D)a magma that has partially crystallized slowly moves to a different location where it then cools rapidly.

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