There are three agents of metamorphism in the changing of metamorphic rocks. They are heat, pressure, and hydro thermal solutions.
compaction
Metamorphic rocks are formed by the process of extreme heat, pressure and other chemicals. Two types of metamorphism are dynamic which makes the pressure and extreme heat and thermal which is caused by the heat of magma from a volcanic eruption.
metamorphic rocks are formed from sandstone
Types of metamorphism are Contact Metamorphism Regional Metamorphism Cataclastic Metamorphism Hydrothermal Metamorphism Burial Metamorphism Shock Metamorphism (Impact Metamorphism)
Metamorphism is the change in the structure or composition of rocks. The most important agents of metamorphism are heat and pressure.
For metamorphism of rock to occur temperature and pressure must increase. Rocks created in this manner are called metamorphic rocks.
heat and pressure
It can undergo more metamorphism, creating a different metamorphic rock, or undergo retrograde metamorphism, which also creates a different metamorphic rock. Metamorphic rocks can undergo these changes due to increases or decreases in temperature and pressure.
Sedimentary and Igneous rocks are not metamorphic rocks. Metamorphic rocks however are igneous or sedimentary rocks that have undertaken metamorphism (In extreme heat and/or pressure the minerals are forced to recrystalize) and become metamorphic rocks. If the heat/pressure causes the rock to melt into liquid rock than it is no longer metamorphi, it is igneous. Hope this helps :)
Heat and pressure are the most common cause of metamorphism of rock.
metamorphism is when a Igneous and sedimentary rocks turn into metamorphic rock.