They change into, or become, a igneous rock
Contact metamorphasism.
true
igneous
contact :)
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
If sedimentary rock becomes intruded by a mass of magma in an igneous intrusion, it will turn into a metamorphic rock. The change takes place because of great pressure and intense heat.
Contact metamorphism
Volcanoes can emit lava,rocks,ash,fragments and molten rock.
All types of rocks.
Friction.
Intrusive rocks come into other rocks in a molten state and when they cool they are frequently very hard with interlocking cemented crystal structures. When erosion occurs it is easier for wind, ice and rain to wear down the rocks into which the igneous rocks were intruded than the hard igneous rocks themselves. This leaves the igneous rocks sticking up (like King Arther's Seat in Edinburgh or the Tours of Dartmoore) as prominent features.