Question

Which of the following is NOT a cause of metamorphism?

a) Weather

b) Heat

c) Pressure

d) Hydrothermal Solution​

Answer 1

The Hydrothermal solution is not the cause of metamorphism.

How metamorphism occurs:

• Some minerals are only stable under certain pressures and temperatures, then metamorphism occurs.

• Chemical reactions occur when pressure and temperature change, causing the minerals in the rock to transform into an assemblage that is stable under the new pressure and temperature conditions.

The main factors causing metamorphism:

• The parent rock's mineral composition.

• Metamorphism occurs at a certain temperature.

• During metamorphism, the quantity, and type of pressure.

• The fluids that are present during metamorphism (mainly water).

• The amount of time a metamorphosis can take.