They change into, or become, a igneous rock
Contact metamorphasism.
true
igneous
contact :)
When rocks come in contact with molten rocks from an igneous intrusion, the surrounding rocks may undergo contact metamorphism, where their mineralogy and texture are altered due to the heat and chemical reactions with the intruding magma. This can result in the formation of new minerals and textures in the rocks near the intrusion boundary.
Lava
metamorphic rocks become molten when over millions of years of compaction they come in contact with the magma which melts the rock and if near a volcano the volcano will remove it forming a igneous rock when cool
Contact metamorphism
It is called contact metamorphism. It takes place when the magma at high temperature tries to break out from the magma chamber, it then comes into contact with the country rock at high pressure and temperature.
Dynamic contact metamorphism occurs along tectonic plate boundaries where rocks come into contact with hot magma intrusions, while regional metamorphism occurs over large areas along convergent plate boundaries where high pressure and temperature conditions alter rocks deep within the Earth's crust.
Volcanoes can emit lava,rocks,ash,fragments and molten rock.
All types of rocks.