Question

3. Would you expect to find foliated metamorphic rocks near a volcano? Why or why not? 4. What are two major changes that may occur during metamorphism to a preexisting rock?

Answer 1

Answer:

As given below.

Explanation:

• In foliated metamorphic rocks like the gneiss, phyllite, schist, and slate have a layered or banded appearance produced due to the expose of heat and direct pressure. It's due to the pressure of overlying rocks that they get alined and develop into a sheet-like structure.

• When a  rock goes metamorphism two main types of changes take place like the Contact metamorphism which takes place when the magma touche the rocks. And the Regional metamorphism when the great masses of rocks change in areas due to the impact of pressure produced over the rocks deep within the earth.

• Thus in metamorphism, the chemical and physical properties are altered to produce rocks with or without the melting of magma primarily due to heat, pressure, and the introduction of chemically active fluids.