Question

How does heat and pressure change minerals?

Answer 1

Hint: Solid rock can be altered into a new rock by pressures that lead to an increase in heat and pressure. The 3 fundamental agents. Temperature, pressure, and chemical changes are the three fundamental agents that affect metamorphism.

Complete answer:
Metamorphic rocks are sedimentary or igneous rocks that have been altered in size, shape and structure of the minerals in rocks, by heat or pressure.
The presence of some certain minerals in a metamorphic rock can demonstrate the degree of heat and pressure it maintained. For metamorphism to occur Energy is required to fuel the chemical reactions for metamorphism to take place. Heat is the major source of energy.
The pressure within the earth is the outcome of gravity pulling the crust of the earth towards downward. Like heat, pressure increases with depth. This pressure can certainly clasp the openings out of the minerals within the rock. This makes the rocks denser. The heat and pressure together result in the rock to flow instead of break. The mineral grains become realigned. They flatten out and get extended.

Note: When pressure and temperature alters, chemical reactions arise to cause the minerals in the rock to alter to an aggregation that is stable at the new pressure and temperature conditions. Thus high temperature can arise by burial of rock. Temperature can also rise due to igneous intrusion.