Which of the following is not a metamorphic agent?A.Glacial meltwaterB.Hot waterC.HeatD.Pressure

To determine which option is not a metamorphic agent, we first need to understand what metamorphic agents are. Metamorphic agents are the factors that contribute to the metamorphosis of rocks, including heat, pressure, and chemically active fluids.

Let’s analyze each option:

1. Glacial meltwater: This is water that comes from melting glaciers. It can contribute to erosion and sediment transport but is not a direct agent of metamorphism.

2. Hot water: This can be involved in metamorphic processes, particularly in hydrothermal metamorphism, where hot, chemically active fluids circulate through rocks.

3. Heat: A primary metamorphic agent that increases the temperature and drives metamorphic changes.

4. Pressure: Another primary agent that causes recrystallization and foliation in rocks.

Conclusion

The option that is not a metamorphic agent is A. Glacial meltwater.