Answer:
Cooling rates
Step-by-step explanation:
The rate of cooling directly correlates with the crystal size in an igneous rock.
Crystal size of igneous rocks can be used to construe the way a melt cools.
- When a melt cools rapidly, little to no crystal forms.
- The nucleation center becomes very small and therefore, the mineral sizes are in turn very fine.
- When a melt has enough time to cool, bigger mineral grains will crystalize.
- This is because nucleation centers have more time to develop.